CN114804316A - All-organic composite flocculant and application thereof - Google Patents
All-organic composite flocculant and application thereof Download PDFInfo
- Publication number
- CN114804316A CN114804316A CN202210505794.1A CN202210505794A CN114804316A CN 114804316 A CN114804316 A CN 114804316A CN 202210505794 A CN202210505794 A CN 202210505794A CN 114804316 A CN114804316 A CN 114804316A
- Authority
- CN
- China
- Prior art keywords
- molecular weight
- organic
- flocculant
- high molecular
- organic flocculant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 229920000642 polymer Polymers 0.000 claims abstract description 73
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 37
- 229940126062 Compound A Drugs 0.000 claims abstract description 36
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000013543 active substance Substances 0.000 claims abstract description 3
- 229920001577 copolymer Polymers 0.000 claims description 39
- 239000000126 substance Substances 0.000 claims description 36
- -1 anion organic compounds Chemical class 0.000 claims description 33
- 239000004094 surface-active agent Substances 0.000 claims description 31
- 239000008394 flocculating agent Substances 0.000 claims description 25
- 229920002401 polyacrylamide Polymers 0.000 claims description 20
- 239000000178 monomer Substances 0.000 claims description 18
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 17
- 150000001768 cations Chemical class 0.000 claims description 17
- 150000001450 anions Chemical group 0.000 claims description 16
- 125000000129 anionic group Chemical group 0.000 claims description 12
- 125000003342 alkenyl group Chemical group 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- 125000002091 cationic group Chemical group 0.000 claims description 11
- 229920006158 high molecular weight polymer Polymers 0.000 claims description 11
- 229920001519 homopolymer Polymers 0.000 claims description 11
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 11
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 10
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 9
- 229910052708 sodium Inorganic materials 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 claims description 7
- 229920000620 organic polymer Polymers 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 6
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 6
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 claims description 6
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 6
- 229940047670 sodium acrylate Drugs 0.000 claims description 6
- 125000001424 substituent group Chemical group 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical group C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 claims description 4
- RRHXZLALVWBDKH-UHFFFAOYSA-M trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)OCC[N+](C)(C)C RRHXZLALVWBDKH-UHFFFAOYSA-M 0.000 claims description 4
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 claims description 3
- XBIPWOJKRZBTQK-UHFFFAOYSA-N 2-methylidenebut-3-enamide Chemical compound NC(=O)C(=C)C=C XBIPWOJKRZBTQK-UHFFFAOYSA-N 0.000 claims description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-O N-dimethylethanolamine Chemical compound C[NH+](C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-O 0.000 claims description 3
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 claims description 3
- 150000003863 ammonium salts Chemical group 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical compound NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 claims description 3
- VNKYTQGIUYNRMY-UHFFFAOYSA-N methoxypropane Chemical compound CCCOC VNKYTQGIUYNRMY-UHFFFAOYSA-N 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 3
- 229920001467 poly(styrenesulfonates) Chemical group 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical group [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 3
- 229940006186 sodium polystyrene sulfonate Drugs 0.000 claims description 3
- OZXPDBUJCIJMRF-UHFFFAOYSA-K trisodium styrene phosphate Chemical compound P(=O)([O-])([O-])[O-].[Na+].C=CC1=CC=CC=C1.[Na+].[Na+] OZXPDBUJCIJMRF-UHFFFAOYSA-K 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229920003169 water-soluble polymer Polymers 0.000 claims description 2
- 239000008194 pharmaceutical composition Substances 0.000 claims 1
- 239000003186 pharmaceutical solution Substances 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 34
- 239000010865 sewage Substances 0.000 abstract description 23
- 230000018044 dehydration Effects 0.000 abstract description 5
- 238000006297 dehydration reaction Methods 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 39
- 238000002474 experimental method Methods 0.000 description 17
- 238000005189 flocculation Methods 0.000 description 16
- 239000007864 aqueous solution Substances 0.000 description 15
- 230000016615 flocculation Effects 0.000 description 15
- 239000003344 environmental pollutant Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 12
- 231100000719 pollutant Toxicity 0.000 description 12
- 230000002195 synergetic effect Effects 0.000 description 10
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 description 9
- 238000013178 mathematical model Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000012216 screening Methods 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 125000004122 cyclic group Chemical group 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 229920002521 macromolecule Polymers 0.000 description 6
- 238000004062 sedimentation Methods 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 5
- 238000005188 flotation Methods 0.000 description 5
- 229920002873 Polyethylenimine Polymers 0.000 description 4
- 229920000289 Polyquaternium Polymers 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010408 sweeping Methods 0.000 description 3
- JADMAVSCPFDMLP-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate;prop-2-enamide Chemical compound NC(=O)C=C.CN(C)CCOC(=O)C(C)=C JADMAVSCPFDMLP-UHFFFAOYSA-N 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 2
- 229940048053 acrylate Drugs 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 238000012661 block copolymerization Methods 0.000 description 2
- 229920006317 cationic polymer Polymers 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000008247 solid mixture Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- PUVAFTRIIUSGLK-UHFFFAOYSA-M trimethyl(oxiran-2-ylmethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC1CO1 PUVAFTRIIUSGLK-UHFFFAOYSA-M 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- ZDFDJKNMVBIUTI-UHFFFAOYSA-N 1-(2-bromopropan-2-yl)-2-dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1C(C)(C)Br ZDFDJKNMVBIUTI-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- TXOFSCODFRHERQ-UHFFFAOYSA-N N,N-Dimethylphenethylamine Chemical class CN(C)CCC1=CC=CC=C1 TXOFSCODFRHERQ-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical class C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- KHSLHYAUZSPBIU-UHFFFAOYSA-M benzododecinium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 KHSLHYAUZSPBIU-UHFFFAOYSA-M 0.000 description 1
- RVYMCZNPFTYMDC-UHFFFAOYSA-L benzyl-dodecyl-dimethylazanium bromide chloride Chemical compound [Cl-].[Br-].CCCCCCCCCCCC[N+](C)(C)Cc1ccccc1.CCCCCCCCCCCC[N+](C)(C)Cc1ccccc1 RVYMCZNPFTYMDC-UHFFFAOYSA-L 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical group CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- ZUHZZVMEUAUWHY-UHFFFAOYSA-N n,n-dimethylpropan-1-amine Chemical compound CCCN(C)C ZUHZZVMEUAUWHY-UHFFFAOYSA-N 0.000 description 1
- RCLLINSDAJVOHP-UHFFFAOYSA-N n-ethyl-n',n'-dimethylprop-2-enehydrazide Chemical compound CCN(N(C)C)C(=O)C=C RCLLINSDAJVOHP-UHFFFAOYSA-N 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N phosphonic acid group Chemical group P(O)(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005588 protonation Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229940126589 solid medicine Drugs 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 239000002888 zwitterionic surfactant Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/542—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/547—Tensides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to an all-organic composite flocculant and application thereof, wherein active substances of the flocculant comprise a composite flocculant and an organic compound A, and the composite flocculant is a combination of three or more of a low molecular weight polymer organic flocculant B, a low molecular weight high molecular weight organic flocculant C, a medium molecular weight high molecular weight organic flocculant D, a high molecular weight organic flocculant E and an ultrahigh molecular weight high molecular weight organic flocculant F. The invention solves the problems that the existing inorganic flocculant obviously improves the water-containing sludge amount, obviously increases sludge dehydration, sludge drying and sludge treatment cost, improves the quality and resource rate of organic recovery, reduces the sewage treatment difficulty and the operation cost and the like although reducing the content of organic matters in sewage.
Description
Technical Field
The invention relates to the technical field of flocculating agents, in particular to a compound of a surfactant with various molecular structures, organic amines with various molecular structures and charge densities and a high molecular polymer with various molecular weights and charge density distributions, wherein the surfactant is used for treating organic matter (such as oil) components, suspended matters, turbidity and the like in water. The method is widely applied to various processes and process water treatment stages of production process flows of various industries.
Background
The nation pays more attention to energy conservation and environmental protection, the pollutant recycling and emission standards are more and more standardized, the environmental pollution penalty is more and more strict, enterprises pay more attention to the pollutant recycling application, the environmental protection treatment cost borne by the enterprises is increased day by day, and the environmental protection pressure is increased day by day.
At present, most of the flocculating agents used in the sewage treatment process are various, but the flocculating agents can be divided into inorganic flocculating agents and organic flocculating agents in general. The inorganic flocculant is mainly aluminum chloride, ferric sulfate, aluminum ferric sulfate and polymers thereof, the polyacrylamide and the polyquaternium are typical representatives of the organic flocculant, such as a single flocculant and a composite flocculant of the polyacrylamide, the polyquaternium and the inorganic flocculant, and the organic flocculant composed of the polyacrylamide and the polyquaternium has poor treatment effect and high treatment cost in practical application.
The organic matter in water is of various types and difficult to separate, the separation effect is not good due to the recovery technology, even if a plurality of organic components are separated and reused, the organic matter with considerable content in the water is regarded as pollutants to be treated, the treatment process flow is long, the equipment investment and the operation cost are high, the treatment efficiency is not ideal, the quality of discharged water (oil in water, COD, suspended matters, turbidity and the like) often wanders near the control indexes, the operation management pressure is high, and serious ghost images affect the reutilization of the water.
Generally, in the flotation and sludge sedimentation processes, in order to ensure the treatment effect, a large amount of inorganic flocculant is mainly added. Although the content of organic matters in the sewage is reduced, the inorganic flocculant added in large amount is used as the main component of the high-water-content sludge, so that the water-content sludge is obviously increased, and the sludge dewatering, sludge drying and sludge treatment costs are obviously increased.
In the recovered organic matters, the quality of the recovered matters is influenced because the flocculating agent contains inorganic salt, and the organic matters are treated as hazardous wastes, so that the treatment cost is high, and resources are wasted. Therefore, how to effectively improve the efficiency of flocculation separation of organic matters in water, improve the quality and the resource rate of organic recovered matters, and reduce the difficulty of sewage treatment and the operating cost becomes a key and difficult problem of industrial attention.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides an all-organic composite flocculant and application thereof, and aims to solve the problems that although the content of organic matters in sewage is reduced by the conventional inorganic flocculant, the content of water-containing sludge is obviously increased, sludge dehydration, sludge drying and sludge treatment cost are obviously increased, the quality and the resource rate of organic recovery are improved, the sewage treatment difficulty and the operation cost are reduced, and the like.
The technical scheme is as follows:
the effective substances of the flocculant comprise a composite flocculant and an organic compound A, wherein the composite flocculant is a combination of three or more of a low molecular weight polymer organic flocculant B, a low molecular weight high molecular weight organic flocculant C, a medium molecular weight high molecular weight organic flocculant D, a high molecular weight organic flocculant E and an ultrahigh molecular weight high molecular weight organic flocculant F; the weight average molecular weight of the organic compound A is less than 100000, the weight average molecular weight of the low-molecular-weight polymer organic flocculant B is 10000-50 ten thousand, the weight average molecular weight of the low-molecular-weight polymer organic flocculant C is 50-500 ten thousand, the weight average molecular weight of the medium-molecular-weight polymer organic flocculant D is 500-1000 ten thousand, the weight average molecular weight of the high-molecular-weight polymer organic flocculant E is 1000-1500 ten thousand, and the weight average molecular weight of the ultrahigh-molecular-weight polymer organic flocculant F is 1500-4500 ten thousand.
Preferably, the flocculant comprises 0.1-55 parts by mass of an organic compound A and a composite flocculant, wherein the composite flocculant is a combination of three or more of 0.01-50 parts by mass of a low molecular weight polymer organic flocculant B, 0.01-45 parts by mass of a low molecular weight high molecular weight organic flocculant C, 0.01-40 parts by mass of a medium molecular weight high molecular weight organic flocculant D, 0.001-35 parts by mass of a high molecular weight organic flocculant E and 0.001-30 parts by mass of an ultrahigh molecular weight high molecular weight organic flocculant F.
Preferably, the flocculant also comprises an organic surfactant G, and the mass fraction of the added organic high-molecular surfactant G is 0.001-10; the organic polymer surfactant G is a water-soluble polymer surfactant with the weight-average molecular weight of 1000-40 ten thousand, and comprises a homopolymer, a copolymer and a polycondensate of the surfactant, wherein the monomer is a substance which has a plurality of branched molecular structures, can be grafted and copolymerized into a tree shape, or has a plurality of annular block molecular structures, can be block-copolymerized and alternately copolymerized into a multi-mesh honeycomb organic copolymer.
Preferably, the ionic degree of the organic compound A is more than 30%, and the organic compound A is selected from one or more of water-soluble cation and anion organic compounds; when the organic compound A is a cationic organic compound, it has the general formula R (NH) 2 ) 2 ，NH 2 R，NHR 1 R 2 ，NHR 1 R 2 R 3 ，NH + R R 1 R 2 R 3 ，RCONH2，RNH 3 OH，RNH 2 OH，RCONH 3 OH or- (NH) + R 1 R 2 R 3 ) n -, wherein the substituent R, R 1 、R 2 、R 3 Can be C 1 ～C 18 Alkyl, alkenyl, cycloalkyl or phenyl of (a); when the organic compound A is an anionic organic compound, it has the general formula RSO 2 ，R 1 R 2 SO 3 ，RCO 2 ，R 1 R 2 CO，RNO 2 ，RCN，RCOO ＝ ，RSO 3 ＝ ，,ROSO 3 ＝ ，RPO 3 ＝ Wherein the substituent R, R 1 、R 2 ，R 3 Is C 1 ～C 18 Alkyl, alkenyl, cycloalkyl or phenyl.
Preferably, when the organic compound a is a cationic organic compound, the organic compound a is selected from one or more of ethanolamine, diethanolamine, triethanolamine, morpholine, cyclohexylamine, methoxypropane, ethylenediamine, propylenediamine dimethylpropylamine, hexamethylenediamine, hydroxyethylethylenediamine, octadecylamine, N-dimethylethanolamine, N-diethylethanolamine, quaternary ammonium salts, polyquaternary ammonium salts, N-vinylformamide, methacryloyloxyethyltrimethylammonium chloride; when the organic compound A is an anionic organic compound, the organic compound A is selected from one or more of sodium acrylate, acrylamide and sodium alkyl sulfonate, sodium styrene phosphate or sodium alkyl phosphonate.
Preferably, the low molecular weight polymeric organic flocculant B is selected from one or more of water-soluble anionic, cationic and nonionic polymers, zwitterionic low molecular weight polymeric organic flocculants; when in useWhen the low molecular weight polymer organic flocculant B is a cation, the general formula of the molecular structure is R (NH) 2 ) 2 ，NH 2 R，NHR 1 R 2 ，NHR 1 R 2 R 3 ，NH + R 1 R 2 R 3 ，RCONH2，RNH 3 OH，RNH 2 OH，RCONH 3 OH or- (NH) + R 1 R 2 R 3 ) n -, wherein R, R 1 、R 2 R3 is C 1 ～C 18 Alkyl, alkenyl, cycloalkyl or phenyl of (a); when the low molecular weight polymer organic flocculant B is an anion, the general structural formula is RCOO ＝ ，RSO 3 ＝ ,ROSO 3 ＝ ，RPO 3 ＝ Or RNO 2 Wherein R is C 1 ～C 18 Alkyl, alkenyl, cycloalkyl or phenyl.
Preferably, when the low molecular weight polymer organic flocculant B is a cation, the low molecular weight polymer organic flocculant B has a quaternary ammonium salt group, a quinolinium ion group, a pyridinium ion group structure, or a monomer with a structure of vinylamine, N-vinylformamide, or vinylacrylamide, and a copolymer composed of monomers with one or two or three groups or structures; for example: homopolymers of dimethyldiallylammonium chloride and copolymers with acrylamide, copolymers of vinyltrimethoxysilane and DADMAC, terpolymers of vinyltrimethoxysilane and DADMAC and AM, polyimideammoniumpolyquaternium, polymethacryloxyethyltrimethylammonium chloride, dimethylaminoethylmethacrylate acrylamide polymer, dodecyldimethylbenzylammonium bromide (chloride), (poly) dimethyldiallylammonium chloride, poly-beta-hydroxypolyamine, polydimolecular allylquaternary ammonium cationic polymer, high molecular copolymers of methacrylate quaternary ammonium salts and acrylamide, poly (glycidyltrimethylammonium chloride), methacrylic acid-acrylamide-dimethylaminoethyl ester polymer, polyethyleneimine, polyethylene polyamine, chitosan;
when the low-molecular-weight polymer organic flocculant B is an anion, the structure of the low-molecular-weight polymer organic flocculant B is sodium polyacrylate, acrylamide and sodium acrylate copolymer and sodium polystyrene sulfonate sodium polystyrene phosphate;
when the low-molecular-weight polymer organic flocculant B is nonionic, the structure of the low-molecular-weight polymer organic flocculant B has nonionic polyacrylamide or polyethylene oxide.
Preferably, the low molecular weight high molecular weight organic flocculant C, the medium molecular weight high molecular weight organic flocculant D, the high molecular weight organic flocculant E and the ultrahigh molecular weight high molecular weight organic flocculant F are selected from one or more of water-soluble anionic, cationic, nonionic and zwitterionic structure polymeric organic flocculants.
Preferably, the low molecular weight high molecular weight organic flocculant C is a high molecular weight organic flocculant with the weight average molecular weight of 50-500 ten thousand, the medium molecular weight high molecular weight organic flocculant D is a high molecular weight organic flocculant with the weight average molecular weight of 500-1000 ten thousand, the high molecular weight organic flocculant E is a high molecular weight organic flocculant with the weight average molecular weight of 1000-1500 ten thousand, the ultrahigh molecular weight high molecular weight organic flocculant F is a high molecular weight organic flocculant with the weight average molecular weight of 1500-4500 ten thousand, the high molecular weight organic flocculant comprises a homopolymer, a copolymer and a polycondensate of the high molecular weight organic flocculant, and a monomer is a substance which has a plurality of side branch molecular structures and can be grafted and copolymerized into a tree shape or a plurality of ring block molecular structures and can be copolymerized into a multi-mesh honeycomb organic copolymer alternately.
An all-organic composite flocculant is used for preparing the aqueous solution of the medicine with 0.1-60% mass concentration of active substances or the dried solid medicine with 1-99.9% mass concentration, and the assistant is added or not added in the medicine.
Has the advantages that:
compared with inorganic flocculant, or only one of low molecular weight flocculant or high molecular weight flocculant polymer, or multiple molecular weight flocculants, or organic and inorganic flocculant composite agent, the composite agent has very obvious flocculation effect, and can obtain lower cost and higher efficiency treatment effect. In addition, in the process of forming flocculent colloid, the forming amount and forming tendency of blocky flocculent are smaller, and more rapid and smooth flocculation, sedimentation and drainage effects and sludge with higher dryness can be obtained. The problems of high water content of sludge generated by the inorganic flocculant, large sludge amount, sludge dehydration, sludge drying, high sludge treatment cost and the like are effectively solved.
Detailed Description
The invention is described in more detail below with reference to the accompanying drawings.
The traditional flocculation theory is that double-layer ions of counter-charge ions and suspended particles are used for breaking an electric double-layer ion structure (inorganic salts such as polyaluminium salt, polyferric salt, polysilicate and composite salt), and linear long-chain connection and coagulation are realized by utilizing the adsorption bridging effect of a high-molecular polymer (straight chain), so that the aggregation and sedimentation effects of the suspended particles are increased, and the clarification effect is achieved. A large number of practical situations prove that the flocculant screening is carried out by only depending on ion neutralization, breaking double electric layers, straight-chain polymer adsorption bridging, linear long-chain connection, aggregation, rolling sweeping and sedimentation theories, the effect is poor, the cost is high, and the shock resistance of the product performance is weak.
In order to break the limitations, the invention designs two mathematical models to find a path for solving the problems:
one of the mathematical models is established under the condition of traditional ion neutralization and breaking the double electric layers, and the crown-shaped structural form with trunks, branches, tips and leaves is established through organic matters with different molecular weights, so that the mathematical model has a solid and thick trunk framework structure and a large number of strong branches and branch supporting structures and dense adsorption and capture specific surfaces of dense branches and leaves, and the mathematical model is just like the large-scale forest formed by trees for adsorbing dust in the air to adsorb, capture and scan particles with various chemical structures in water. Preferably, the ultrahigh molecular weight high molecular weight polymer with a molecular branching structure is used as a trunk, the high molecular weight polymer with a branching structure is used as a branch, the high molecular weight polymer with medium molecular weight in the branching structure is used as a branch, the low molecular weight high molecular weight polymer with the branching structure is used as a treetop, the low molecular weight polymer with the branching structure is used as leaves, and the polymers with the branching structure are subjected to chain extension graft copolymerization by virtue of hydrogen bond bonding force, Van der Waals adsorption force and SP orbital coordination bond bonding force and are linked into a three-dimensional structure.
The other mathematical model approach is still to establish a net structure shape with a root line, an introduction line, a cross line, a warp line, a weft line and a mesh through organic matters with different molecular weights under the condition of traditional ion neutralization and breaking of an electric double layer, so that the net structure shape has a solid and sturdy net root skeleton structure and a large number of strong introduction line, cross line supporting structures and dense three-dimensional multi-mesh type adsorption capture specific surfaces with the warp line, the weft line and the mesh, and the particles with various chemical structures in water are adsorbed, rolled and captured just like large-scale fishing formed by networking in water. Preferably, the ultra-high molecular weight polymer with a block ring molecular body structure is used as a strong root net, the high molecular weight polymer with a block body structure is used as a strong head line, the high molecular weight polymer with molecular weight in the block body structure is used as a strong cross line, the low molecular weight high molecular weight polymer with the block body structure is used as a tough longitude and latitude line, the low molecular weight polymer with the block body structure is a dense mesh, and the polymers with the block body structure are subjected to block copolymerization and alternate copolymerization by virtue of hydrogen bond bonding force, van der Waals adsorption force and SP orbital coordination bond bonding force to be linked into a multi-mesh honeycomb body structure.
An organic composite flocculant for removing the organic substances, suspended substances and turbidity from water. The effective substances comprise a cation (anion, nonionic, zwitterion) organic compound A and a composite flocculant, wherein the composite flocculant is three or more of a cation (anion, nonionic, zwitterion) low molecular weight polymer organic flocculant B, a cation (anion, nonionic, zwitterion) low molecular weight polymer organic flocculant C, a cation (anion, nonionic, zwitterion) medium molecular weight polymer organic flocculant D, a cation (anion, nonionic, zwitterion) high molecular weight polymer organic flocculant E and a cation (anion, nonionic, zwitterion) ultrahigh molecular weight polymer organic flocculant F, and a cation (anion, nonionic, zwitterion) organic surfactant G can be added. Wherein the mass parts of the cationic organic compound A, the low molecular weight polymer organic flocculant B, the low molecular weight high molecular weight organic flocculant C, the medium molecular weight high molecular weight organic flocculant D, the high molecular weight organic flocculant E, the ultrahigh molecular weight high molecular weight organic flocculant F and the organic high molecular surfactant G are 0.1-55, 0.01-50, 0.01-45, 0.01-40, 0.01-35 and 0.001-30 in sequence.
Preferably, the effective substances of the flocculant comprise a composite flocculant and an organic compound A, wherein the composite flocculant is a combination of four or more of a low molecular weight polymer organic flocculant B, a low molecular weight high molecular weight organic flocculant C, a medium molecular weight high molecular weight organic flocculant D, a high molecular weight organic flocculant E and an ultrahigh molecular weight high molecular weight organic flocculant F. The effective substances of the flocculant comprise a composite flocculant and an organic surfactant G, wherein the composite flocculant is a combination of four or more than four of a low molecular weight polymer organic flocculant B, a low molecular weight high molecular weight organic flocculant C, a medium molecular weight high molecular weight organic flocculant D, a high molecular weight organic flocculant E and an ultrahigh molecular weight high molecular weight organic flocculant F. The effective substances of the flocculant comprise a composite flocculant, an organic compound A and an organic surfactant G, wherein the composite flocculant is a combination of three or more of a low molecular weight polymer organic flocculant B, a low molecular weight high molecular weight organic flocculant C, a medium molecular weight high molecular weight organic flocculant D, a high molecular weight organic flocculant E and an ultrahigh molecular weight high molecular weight organic flocculant F.
The effective substance in the present invention means a substance that plays a main flocculation role, and does not include water, an auxiliary agent, and other auxiliary substances. The cationic organic compound A in the present invention has an ionic degree of more than 30% and a weight average molecular weight of 100000 or less. Mainly plays a role in charge neutralization and electric double layer destruction.
The weight average molecular weight of the low molecular weight polymer organic flocculant B is 10000-50 ten thousand, and the low molecular weight polymer organic flocculant B mainly plays a role in the meshes of leaves and nets of trees.
The low molecular weight high molecular weight organic flocculant C has a weight average molecular weight of 50-500 ten thousand and mainly plays a role in treetops of trees and longitude and latitude lines of nets.
The weight-average molecular weight of the medium-molecular weight high-molecular weight organic flocculant D is 500-1000 ten thousand, and mainly plays the role of class of branches and nets of trees.
The high molecular weight organic flocculant E has a weight average molecular weight of 1000-1500 ten thousand and mainly plays a role in the introduction of twigs and nets of trees.
The weight-average molecular weight of the ultrahigh molecular weight high molecular weight organic flocculant F is 1500-4500 ten thousand, and the ultrahigh molecular weight high molecular weight organic flocculant F mainly plays a role of roots of trunks and nets of trees.
The weight average molecular weight of the organic polymer surfactant G is 1000 to 50 ten thousand.
The ionic degree of the organic compound A is more than 30 percent, the weight average molecular weight is less than 100000, and the organic compound A is selected from one or more of water-soluble cation and anion organic compounds; when the organic compound A is a cationic organic compound, it has the general formula R (NH) 2 ) 2 ，NH 2 R，NHR 1 R 2 ，NHR 1 R 2 R 3 ，NH + R R 1 R 2 R 3 ，RCONH2，RNH 3 OH，RNH 2 OH，RCONH 3 OH or- (NH) + R 1 R 2 R 3 ) n -, wherein the substituent R, R 1 、R 2 、R 3 Can be C 1 ～C 18 Alkyl, alkenyl, cycloalkyl, phenyl, as defined below. When the organic compound A is an anionic organic compound, it has the general formula RSO 2 ，R 1 R 2 SO 3 ，RCO 2 ，R 1 R 2 CO，RNO 2 ，RCN，RCOO ＝ ，RSO 3 ＝ ，,ROSO 3 ＝ ，RPO 3 ＝ Wherein the substituent R, R 1 、R 2 ，R 3 Is C 1 ～C 18 Alkyl, alkenyl, cycloalkyl, phenyl, as defined below. Preferably, when the organic compound A is a cationic organic compound, the organic compound A is selected from the group consisting of ethanolamine, diethanolamine, triethanolamine, morpholine, cyclohexylamine, methoxypropane, ethylenediamine and propylenediamineOne or more of dimethylpropylamine, hexamethylenediamine, hydroxyethylethylenediamine, octadecylamine, N-dimethylethanolamine, N-diethylethanolamine, quaternary ammonium salt, polyquaternary ammonium salt, N-vinylformamide and methacryloyloxyethyl trimethyl ammonium chloride; when the organic compound A is an anionic organic compound, the anionic group is selected from a carboxyl group, a sulfuric acid group, a phosphonic acid group and a nitro organic compound. The organic compound A is selected from one or more of sodium acrylate, acrylamide, sodium alkyl sulfonate, sodium styrene phosphate or sodium alkyl phosphonate.
The weight average molecular weight of the low molecular weight polymer organic flocculant B is 10000-50 ten thousand, and the low molecular weight polymer organic flocculant B is selected from water-soluble anions (such as RCOO) ＝ ，RSO 3 ＝ ，,ROSO 3 ＝ ，RPO 3 ＝ ，RNO 2 Etc.), cations (e.g., RCONH) 2 ,RNH 3 OH,RNH 2 OH,RCONH 3 OH), one or more of nonionic, zwitterionic low molecular weight polymeric organic flocculants;
when the low molecular weight polymer organic flocculant B is a cation, the general molecular structural formula is R (NH) 2 ) 2 ，NH 2 R，NHR 1 R 2 ，NHR 1 R 2 R 3 ，NH + R 1 R 2 R 3 ，RCONH2，RNH 3 OH，RNH 2 OH，RCONH 3 OH or- (NH) + R 1 R 2 R 3 ) n -, wherein R, R 1 、R 2 R3 is C 1 ～C 18 Alkyl, alkenyl, cycloalkyl, phenyl, the following; when the low molecular weight polymer organic flocculant B is an anion, the general structural formula is RCOO ＝ ，RSO 3 ＝ ,ROSO 3 ＝ ，RPO 3 ＝ Or RNO 2 。
Preferably, when the low molecular weight polymeric organic flocculant B is cationic, the low molecular weight polymeric organic flocculant B is selected from quaternary ammonium salt groups, quinolinium ion groups, pyridinium ion groups, in particular polyvinylamine, poly N-vinylformamide, polyvinylacrylamide and copolymers of vinylamine, N-vinylformamide, vinylacrylamide monomers (two or three of them), homopolymers of dimethyldiallylammonium chloride (DADMAC) and copolymers with Acrylamide (AM), copolymers of Vinyltrimethoxysilane (VTMS) and DADMAC, terpolymers of VTMS and DADMAC and AM, polyimidepolyamine polyquaterniums, polymethacryloxyethyltrimethylammonium chloride, dimethylaminoethylacrylamide polymers, dodecyldimethylbenzyl bromide (chloride) ammonium, ammonium, One or more of (poly) dimethyl diallyl ammonium chloride, poly-beta-hydroxy polyamine, poly bimolecular allyl quaternary ammonium cationic polymer, a high molecular copolymer of methacrylate quaternary ammonium salt and acrylamide, poly (glycidyl trimethyl ammonium chloride) (PECHA), methacrylic acid-acrylamide-dimethylaminoethyl ester polymer, polyethyleneimine, polyethylene polyamine and chitosan;
when the low molecular weight polymer organic flocculant B is an anion, the anion group is carboxyl, sulfate group and phosphate group, and the low molecular weight polymer organic flocculant B is selected from sodium polyacrylate, acrylamide and sodium acrylate copolymer and sodium polystyrene sulfonate sodium polystyrene phosphate;
when the low molecular weight polymer organic flocculant B is nonionic, the low molecular weight polymer organic flocculant B is selected from nonionic polyacrylamide or polyethylene oxide (PEO) and the like. Such flocculants are uncharged and produce a temporary charge in aqueous solution by protonation, and their aggregation is by weak hydrogen bonding. The zwitterionic low-molecular-weight polymer organic flocculant B is an organic flocculant containing both anionic and cationic groups in the molecular structure. The anion group is carboxyl, sulfate group, phosphate group, and the cation group is quaternary ammonium salt group, quinolinium ion group, and pyridinium ion group.
The low molecular weight high molecular weight organic flocculant C can be one or more selected from water-soluble cationic flocculant or anionic flocculant or nonionic flocculant or zwitterion, and the molecule of the low molecular weight high molecular weight organic flocculant C has a lateral branch structure or a ring block structure. The water-soluble high molecular weight polyacrylamide with the weight-average molecular weight of 50-500 ten thousand is preferable, and comprises homopolymer, copolymer and polycondensate of acrylamide, wherein the monomer is a plurality of substances which have lateral dendritic molecular structures and can be grafted and copolymerized into a tree shape, or a plurality of substances which have cyclic block molecular structures and can be copolymerized into a multi-mesh honeycomb organic copolymer in a block way.
The medium molecular weight polymer organic flocculant D in the invention can be selected from one or more of water-soluble cationic flocculant or anionic flocculant or nonionic flocculant or zwitterion, and the molecule of the medium molecular weight polymer organic flocculant D has a lateral branch structure or a ring block structure. The water-soluble high molecular weight polyacrylamide with the weight average molecular weight of 500-1000 ten thousand is preferable, and comprises a homopolymer of acrylamide, a copolymer of which the monomer is methacrylamide, and a plurality of graft-copolymerized tree-shaped and annular block molecular structures, which are alternately copolymerized into a multi-mesh honeycomb organic copolymer. The copolymer comprises acrylamide homopolymer, copolymer, polycondensate and monomer, wherein the monomer is a plurality of substances which have side dendritic molecular structures and can be grafted and copolymerized into a tree shape, or a plurality of substances which have cyclic block molecular structures and can be block copolymerized and alternately copolymerized into a multi-mesh honeycomb organic copolymer.
The high molecular weight organic flocculant E can be one or more selected from water-soluble cationic flocculant, anionic flocculant, nonionic flocculant or zwitterion, and the molecule of the high molecular weight organic flocculant E has a lateral branch structure or a ring block structure. The preferred water-soluble high molecular weight polyacrylamide with the weight-average molecular weight of 1000-1500 ten thousand comprises the homopolymer, copolymer, polycondensate and monomer of acrylamide, wherein the monomer is a plurality of substances which have lateral dendritic molecular structures and can be grafted and copolymerized into a tree shape, or a plurality of substances which have cyclic block molecular structures and can be copolymerized into a multi-mesh honeycomb organic copolymer in a block way.
The ultrahigh molecular weight high molecular weight organic flocculant F can be selected from one or more of water-soluble cationic flocculant, anionic flocculant, nonionic flocculant or zwitterion, and the molecules of the ultrahigh molecular weight high molecular weight organic flocculant F have a lateral branch structure or a ring block structure. The water-soluble high molecular weight polyacrylamide with the weight average molecular weight of 1500-4500 ten thousand is preferred, and comprises homopolymer, copolymer, polycondensate and monomer of acrylamide, wherein the monomer is a plurality of substances which have lateral dendritic molecular structures and can be grafted and copolymerized into a tree shape, or a plurality of substances which have cyclic block molecular structures and can be block copolymerized and alternately copolymerized into a multi-mesh honeycomb organic copolymer.
The weight average molecular weight of the organic polymer surfactant G is 1000-50 ten thousand, the organic polymer surfactant G is selected from one or more of water-soluble cationic surfactant, anionic surfactant, nonionic surfactant or zwitterionic surfactant, and the molecule of the organic polymer surfactant G has a side branch structure or a ring block structure. The water-soluble high molecular surfactant with the weight-average molecular weight of 1000-40 ten thousand is preferable, and comprises homopolymers, copolymers and polycondensates of the surfactant, and the monomers are various substances which have side dendritic molecular structures, can be grafted and copolymerized into a tree shape, or can be block-copolymerized with a ring block molecular structure, and are alternately copolymerized into a multi-mesh honeycomb organic copolymer.
The general molecular structure formula of the anionic surfactant G is RCOO - ,RSO 3 - ,RPO 3 - The cationic surfactant G includes amine type and quaternary ammonium salt type, preferably aminoalkyl acrylate copolymer, modified polyethyleneimine polymeric surfactant and acrylamide copolymer containing quaternary ammonium salt group, polyvinyl benzyl trimethylamine salt such as polyethyleneimine, polyvinylpyrrolidone, polymaleimide and its derivatives, quaternized polyacrylamide, polyvinyl pyridinium salt, and polydimethyl amine epichlorohydrin.
The nonionic surfactant G is preferably polyvinyl alcohol and partially esterified or acetalized products thereof such as polyacrylamide, maleic anhydride copolymer, polyacrylate, polyether, polyethylene oxide-propylene oxide, water-soluble phenol resin, amino resin, etc., modified therewith.
The amphoteric surfactant G is preferably an acrylic vinylpyridine copolymer, an acrylic cationic acrylate copolymer, an amphoteric polyacrylamide, or the like.
The organic composite flocculant of the invention can be an aqueous solution with the mass concentration of the effective substances of 0.1 per thousand-60%, preferably an aqueous solution with the mass concentration of 0.2 per thousand-55%, and the organic composite flocculant of the invention can be dried solid and a solid mixture with the mass concentration of the effective substances of 1 per thousand-99.9%, preferably dried solid and a solid mixture with the mass concentration of 5 per thousand-99.9%. Other auxiliary substances such as auxiliaries may also be added to the aqueous solution, the solid or the mixture.
The invention mixes the cation organic compound A with three or more of the macromolecule organic flocculant B, the macromolecule organic flocculant C, the macromolecule organic flocculant D, the macromolecule organic flocculant E and the macromolecule organic flocculant F according to the proportion, and can add the macromolecule surfactant G according to the proportion to prepare the liquid with the required concentration, and the liquid can be directly added into the sewage or the discharged sludge with high water content, when the composite medicament is applied, the adding amount of the effective substance is 20 ppm-600 ppm, and the flocculation, sedimentation and dehydration can be carried out after the stirring is carried out for 5 minutes (the stirring intensity is not more than 90 revolutions per minute).
In the present invention, the organic compound a can form a higher (anionic, nonionic, zwitterionic) ion concentration in the solution because of higher ionic degree (cationic, anionic, nonionic, zwitterionic), and it can achieve destabilization of particles and thus de "hydration" of particles mainly by absorbing onto the surface of suspended particles and changing the surface load of particles to compress and destroy the electric double layer on the surface of particles. The high molecular polymer B, the high molecular polymer C, the high molecular polymer D, the high molecular polymer E, the high molecular polymer F and the high molecular surfactant G are grafted and copolymerized into a tree shape through various side branch molecular structures, or are copolymerized into a multi-mesh honeycomb organic copolymer through block copolymerization of various annular block molecular structures in an alternating way, and the organic copolymer has a high molecular weight, is firm, compact and stretched, occupies the whole liquid space, has a large specific surface area, can adsorb, connect, bridge, roll up and trap destabilize suspended particles in water, further gathers and concentrates, and flocculates and dehydrates oil (organic matters), suspended matters, particles and sludge in the water; and the combination of a plurality of the components can further play a synergistic effect.
According to the invention, an unexpected synergistic effect can be obtained on the basis of not increasing the cost of water and the sludge treatment flocculant through the combination of various medicaments, so that flocs formed in the flocculation process are compact, the phenomenon that the amount of non-process systemic sludge is increased sharply due to the addition of a large amount of inorganic flocculant and polymeric flocculant due to poor treatment effect of other methods is avoided, the water in the flocs can be optimally released, the amount of sludge flocculated by sewage is reduced, the water content in the sludge is reduced, and meanwhile, the specific impedance of the sludge can be remarkably improved, so that the water permeability of the sludge is improved. The combined use of a plurality of medicaments obviously improves the sewage flocculation efficiency, obviously reduces the sludge amount, obviously improves the filtering characteristic of the sludge, has less dosage, can achieve the effect far exceeding that of other conventional medicaments under the same dosage, has low specific impedance value of the treated sludge, high solid content of the dewatered sludge, high combustion heat value and obviously reduced combustion ash content.
In order to examine the flocculation effect of the organic flocculant, the test adopts the sewage discharged after the sedimentation of the oil separation tank of the sewage treatment plant of a certain petrochemical division of China oil stocks. The test was conducted in a product quality inspection laboratory. Generally, COD is used to measure the removal performance of organic substances, oil content is used to measure the oil removal capacity, and suspended matter and turbidity are used to measure the removal capacity of particles. And (3) adopting a sludge specific resistance experiment to determine the dehydration performance of the sludge. It is considered that sludge having a specific sludge resistance of more than 1013m/kg is difficult to filter, and sludge having a specific sludge resistance of less than 1011m/kg is easy to dehydrate. After the sewage is pretreated, the COD is less than or equal to 500ppm, the oil content is less than or equal to 20ppm, the suspended matter is less than or equal to 20ppm, and the turbidity is less than or equal to 20 NTU. The main indexes of the discharged sewage include COD less than or equal to 50ppm, oil content less than or equal to 2.0ppm, suspended matter less than or equal to 2.0ppm and turbidity less than or equal to 2.0 NTU.
1. On-site control index requirements: COD is less than or equal to 500PPM, suspended matter is less than or equal to 20PPM, and oil content is less than or equal to 20 PPM;
2. water quality for test: the pH value is 7.50; suspended matters: 44 mg/L; COD is 382 mg/L; the turbidity was 41.6 degrees;
3. the experimental conditions are as follows: at room temperature.
Secondly, numbering the following raw materials and preparing the raw materials into uniform concentration for later use:
preparing standard aqueous solution of aluminium polychlorid with uniform concentration;
preparing a standard aqueous solution A (methacryloyloxyethyl trimethyl ammonium chloride) with uniform concentration;
preparing a standard aqueous solution of B (dimethylaminoethyl methacrylate acrylamide polymer) with uniform concentration, wherein the weight average molecular weight of the standard aqueous solution is about 50 ten thousand;
preparing a C (high-molecular-weight polyacrylamide standard aqueous solution with a lateral branch structure or a cyclic block structure and a weight-average molecular weight of about 200 ten thousand) with uniform concentration;
preparing a D (high molecular weight polyacrylamide with a side branch structure or a cyclic block structure and a weight average molecular weight of about 800 ten thousand) standard aqueous solution with uniform concentration;
sixthly, preparing a standard E (high molecular weight polyacrylamide with a lateral branch structure or a ring block structure and a weight average molecular weight of about 1200 ten thousand) aqueous solution with uniform concentration;
preparing standard aqueous solution of F (ultra-high molecular weight polyacrylamide with a side branch structure or a cyclic block structure and a weight average molecular weight of about 2500 ten thousand) with uniform concentration;
preparing a standard aqueous solution of a G (dodecyl dimethyl benzyl ammonium bromide chloride) surfactant with uniform concentration; preparing a standard aqueous solution of polymeric ferric chloride with uniform concentration;
experiment one: screening for flocculation effects of different dosages of single flocculants with different molecular weights
Adding 20, 50 and 100 parts of flocculant with the number of 1-9 into three groups of 100ml parallel sewage water samples respectively, stirring for 1 minute, standing for 10 minutes, and observing the phenomenon:
TABLE 1 flocculating effect screening data table for different single flocculating agents and different dosages
The experimental conclusion is that:
1. when a single flocculating agent is used, the flocculating floc is small and small in amount, the transparency is almost unchanged, and the effect is not obvious.
2. When a single flocculating agent is used, the effect of treating the polyferric chloride is slightly better. Organic polymers are not effective. The higher the polymer weight average molecular weight, the lower the treatment effect.
3. The surfactant has a certain treatment effect when in small dosage. The larger the dosage, the more obvious the emulsification, and the treatment effect is reduced.
4. The COD, suspended matter and turbidity were measured and the data are shown in Table 1.
5. The treatment effect of low molecular weight COD, suspended matters and turbidity is better than that of high molecular weight COD, but the treatment effect is in a descending trend after reaching a peak.
6. The flocculation effect of a single flocculating agent cannot meet the actual field requirement.
7. The single flocculant is large in dosage and high in water treatment cost. And (3) screening out products with low cost and high effect by experiments.
Experiment 2: screening for flocculation synergistic effect by comparing different dosages of various flocculants with different molecular weights
Adding 0.1-55 parts by mass of an organic compound A, 0.01-50 parts by mass of a low molecular weight polymer organic flocculant B, 0.01-45 parts by mass of a low molecular weight high molecular weight organic flocculant C, 0.01-40 parts by mass of a medium molecular weight high molecular weight organic flocculant D, 0.01-35 parts by mass of a high molecular weight organic flocculant E, 0.001-30 parts by mass of an ultrahigh molecular weight high molecular weight organic flocculant F and any combination of 0.001-10 parts by mass of an organic high molecular weight surfactant G (see table 2 specifically), stirring for 1 minute, standing for 10 minutes, analyzing and comparing the optimal COD and COD removal rate and phenomena of each group, and observing the phenomena:
TABLE 2 screening of flocculation synergy effect of various flocculants with different molecular weights and different dosages
By observing the comparative screening test, the following conclusions can be drawn:
1. the low-dosage polymeric flocculant has a synergistic effect on the removal of pollutants;
2. the surfactant G has a synergistic effect on the removal of pollutants;
3. according to the treatment effect and the dose proportion analysis of the high molecular weight flocculants with different molecular weights, the dose proportion is found to accord with the designed tree scanning and net capturing treatment mathematical model;
4. the screened flocculant has better treatment effect along with the increase of the dosage; but after a certain dosage, the treatment effect is increased and reduced;
5. the removal rate of the pollutants increases with the increase of the content of the pollutants;
6. the COD removal rate is not less than 66.6%, the turbidity removal rate is not less than 77.6%, and the suspended matter removal rate reaches 100%;
experiment 3 on-site verification test of composite flocculant product
The aim of the field experiment is to verify the flocculation effect of the organic flocculant with fixed content under different water quality conditions in different dosages, and the experiment adopts the air flotation inlet sewage of a sewage treatment plant of a certain petrochemical division of China oil stocks.
Preparing a reagent: preparing products from 6 parts of A, 19 parts of B, 19 parts of C, 8 parts of D, 3 parts of E, 3 parts of F, 15 parts of G high-molecular surfactant and other auxiliaries, stirring for 1 minute, and standing for 10 minutes for later use.
The experimental site: and a field detection laboratory of the purified water workshop.
Experiment temperature: and (4) room temperature.
Experiment time: three days.
Experiment on the first day:
the field sampling water quality is as follows: first-stage air flotation import sewage: the pH value is 7.09; COD is 464 mg/L; the turbidity was 79.0 degrees; oil content: 18.95 mg/L.
Adding 1-600 ppM of prepared reagents into three groups of 100ml parallel sewage water samples respectively, wherein the serial numbers of the reagents correspond to experiment sequences of 31.1-1-31.1-10, stirring for 1 minute, standing for 10 minutes, observing the phenomenon, and detecting the change of COD (chemical oxygen demand) and turbidity data of the samples. The experimental data on the first day are shown in Table 3-1.
TABLE 3-1 day one experiment data
According to the removal rate data of COD and turbidity, the screened flocculating agent has better treatment effect along with the increase of the dosage. But the treatment effect is increased and reduced after a certain dosage. At the dosage of 350ppM, the removal rate of COD and turbidity is higher than 65%, the removal rate of oil content is higher than 60%, and the removal rate of suspended matters reaches 100%.
The experiment on the next day:
the field sampling water quality is as follows: first-stage air flotation import sewage: the pH value is 7.63; the COD is 1190.3 mg/L; the turbidity was 69.60 degrees; oil content: 50 mg/L.
Adding 1-600 ppM of prepared reagents into three groups of 100ml parallel sewage water samples respectively, numbering the reagents according to the experimental sequence of 3.2-1-3.2-10, stirring for 1 minute, standing for 10 minutes, observing the phenomenon, and detecting the change of COD (chemical oxygen demand) and turbidity data of the samples. The data of the experiment on the next day are shown in Table 3-2.
TABLE 3-2 data of the next day experiment
According to the removal rate data of COD and turbidity, the screened flocculating agent has better treatment effect along with the increase of the dosage. But the treatment effect is increased and reduced after a certain dosage. The removal rate of the contaminants increases with the increase of their content. When the dosage is 350ppM, the COD removal rate is higher than 74%, the turbidity removal rate is higher than 57.6%, the oil content removal rate is higher than 85%, and the suspended matter removal rate reaches 100%.
Experiment on the third day:
the field sampling water quality is as follows: first-stage air flotation import sewage: the pH value is 7.63; COD is 619 mg/L; the turbidity was 86.5 degrees; oil content: 25.39 mg/L.
Adding 1-600 ppM parts of prepared reagents into three groups of 100ml parallel sewage water samples respectively, numbering 31.3-1-31.3-10 according to the corresponding experiment sequence, stirring for 1 minute, standing for 10 minutes, observing the phenomenon, and detecting the change of COD (chemical oxygen demand) and turbidity data of the samples. The experimental data on the third day are shown in the table 3-3.
Tables 3-3 third day Experimental data
According to the data of the COD and the turbidity, the screened flocculating agent is still better in treatment effect along with the increase of the dosage. But the treatment effect is increased and reduced after a certain dosage. The removal rate of the contaminants increases with the increase of their content. Similarly, at the dosage of 350ppM, the COD removal rate is higher than 50.3%, the turbidity removal rate is higher than 65.9%, the oil content removal rate is higher than 80%, and the suspended matter removal rate reaches 100%.
And (4) experimental conclusion:
by observing the comparative screening test and the verification test data, the following conclusions can be obtained:
1. the low-dosage polymeric flocculant has flocculation synergistic effect on the removal of pollutants;
2. the surfactant has a synergistic effect on the removal of pollutants;
3. according to the treatment effect and the molecular weight change gradient analysis of the high molecular weight polymeric flocculant with different molecular weights, the more the gradient change of the molecular weight of the polymeric flocculant is, the better the flocculation synergistic effect is. The synergistic effect of the three molecular weight gradients is obviously reflected. The dosage is smaller as the molecular weight of the polymeric flocculant is higher. The synergistic effect of the three or more molecular weight gradient proportions accords with a designed tree scanning and net capturing processing mathematical model;
4. according to the treatment effect and the analysis of the dosage parts of the high molecular weight flocculants with different molecular weights, the parts proportion accords with the designed tree sweeping and net catching treatment mathematical model;
5. the composite flocculant which accords with the proportion of the tree sweeping and net catching treatment mathematical model has better treatment effect along with the increase of the dosage;
6. after a certain dosage is reached, the treatment effect is increased and reduced;
7. the removal rate of the pollutants increases with the increase of the content of the pollutants;
8. the composite flocculant with the optimal proportion has obvious effect in low dosage, and has COD removal rate higher than 50.3%, turbidity removal rate higher than 65.9%, oil content removal rate higher than 80% and suspended matter removal rate up to 100% in dosage of 350 ppM;
9. the requirements of on-site control indexes of COD less than or equal to 500PPM, suspended matters less than or equal to 20PPM and oil content less than or equal to 20PPM are met.
10. The composite flocculant is all organic components, does not contain inorganic substances, and is beneficial to resource utilization of pollutants.
Claims (10)
1. An all-organic composite flocculant is characterized in that: the effective substances of the flocculant comprise a composite flocculant and an organic compound A, wherein the composite flocculant is a combination of three or more of a low molecular weight polymer organic flocculant B, a low molecular weight high molecular weight organic flocculant C, a medium molecular weight high molecular weight organic flocculant D, a high molecular weight organic flocculant E and an ultrahigh molecular weight high molecular weight organic flocculant F; the weight average molecular weight of the organic compound A is less than 100000, the weight average molecular weight of the low-molecular-weight polymer organic flocculant B is 10000-50 ten thousand, the weight average molecular weight of the low-molecular-weight polymer organic flocculant C is 50-500 ten thousand, the weight average molecular weight of the medium-molecular-weight polymer organic flocculant D is 500-1000 ten thousand, the weight average molecular weight of the high-molecular-weight polymer organic flocculant E is 1000-1500 ten thousand, and the weight average molecular weight of the ultrahigh-molecular-weight polymer organic flocculant F is 1500-4500 ten thousand.
2. The all-organic composite flocculant according to claim 1, characterized in that: the flocculant comprises 0.1-55 parts by mass of an organic compound A and a composite flocculant, wherein the composite flocculant is a combination of three or more of 0.01-50 parts by mass of a low molecular weight polymer organic flocculant B, 0.01-45 parts by mass of a low molecular weight high molecular weight organic flocculant C, 0.01-40 parts by mass of a medium molecular weight high molecular weight organic flocculant D, 0.001-35 parts by mass of a high molecular weight organic flocculant E and 0.001-30 parts by mass of an ultrahigh molecular weight high molecular weight organic flocculant F.
3. The all-organic composite flocculant according to claim 2, characterized in that: the flocculant also comprises an organic surfactant G, wherein the mass fraction of the added organic high-molecular surfactant G is 0.001-10; the organic polymer surfactant G is a water-soluble polymer surfactant with the weight-average molecular weight of 1000-40 ten thousand, and comprises a homopolymer, a copolymer and a polycondensate of the surfactant, wherein the monomer is a substance which has a plurality of branched molecular structures, can be grafted and copolymerized into a tree shape, or has a plurality of annular block molecular structures, can be block-copolymerized and alternately copolymerized into a multi-mesh honeycomb organic copolymer.
4. The all-organic composite flocculant according to claim 1, characterized in that: the ionic degree of the organic compound A is more than 30 percent, and the organic compound A is selected from one or more of water-soluble cation and anion organic compounds; when the organic compound A is a cationic organic compound, it has the general formula R (NH) 2 ) 2 ，NH 2 R，NHR 1 R 2 ，NHR 1 R 2 R 3 ，NH + R R 1 R 2 R 3 ，RCONH2，RNH 3 OH，RNH 2 OH，RCONH 3 OH or- (NH) + R 1 R 2 R 3 ) n -, wherein the substituent R, R 1 、R 2 、R 3 Can be C 1 ～C 18 Alkyl, alkenyl, cycloalkyl or phenyl of (a); the organic compound A being an anionWhen the organic compound is a compound of the formula RSO 2 ，R 1 R 2 SO 3 ，RCO 2 ，R 1 R 2 CO，RNO 2 ，RCN，RCOO ＝ ，RSO 3 ＝ ，,ROSO 3 ＝ ，RPO 3 ＝ Wherein the substituent R, R 1 、R 2 ，R 3 Is C 1 ～C 18 Alkyl, alkenyl, cycloalkyl or phenyl.
5. The all-organic composite flocculant according to claim 4, wherein: when the organic compound A is a cationic organic compound, the organic compound A is selected from one or more of ethanolamine, diethanolamine, triethanolamine, morpholine, cyclohexylamine, methoxypropane, ethylenediamine, propylenediamine dimethylpropylamine, hexamethylenediamine, hydroxyethylethylenediamine, octadecylamine, N-dimethylethanolamine, N-diethylethanolamine, quaternary ammonium salt, polyquaternary ammonium salt, N-vinylformamide and methacryloyloxyethyltrimethylammonium chloride; when the organic compound A is an anionic organic compound, the organic compound A is selected from one or more of sodium acrylate, acrylamide and sodium alkyl sulfonate, sodium styrene phosphate or sodium alkyl phosphonate.
6. The all-organic composite flocculant according to claim 1, wherein: the low molecular weight polymer organic flocculant B is selected from one or more of water-soluble anionic, cationic and nonionic polymers and zwitterionic low molecular weight polymer organic flocculants; when the low molecular weight polymer organic flocculant B is a cation, the general molecular structural formula is R (NH) 2 ) 2 ，NH 2 R，NHR 1 R 2 ，NHR 1 R 2 R 3 ，NH + R 1 R 2 R 3 ，RCONH2，RNH 3 OH，RNH 2 OH，RCONH 3 OH or- (NH) + R 1 R 2 R 3 ) n -, wherein R, R 1 、R 2 R3 is C 1 ～C 18 Alkyl and alkenyl ofCycloalkyl or phenyl; when the low molecular weight polymer organic flocculant B is an anion, the general structural formula is RCOO ＝ ，RSO 3 ＝ ,ROSO 3 ＝ ，RPO 3 ＝ Or RNO 2 Wherein R is C 1 ～C 18 Alkyl, alkenyl, cycloalkyl or phenyl.
7. The all-organic composite flocculant according to claim 6, wherein: when the low molecular weight polymer organic flocculant B is a cation, the low molecular weight polymer organic flocculant B has a quaternary ammonium salt base, a quinolinium ion group and a pyridinium ion group structure, or has a monomer with a structure of vinylamine, N-vinylformamide and vinylacrylamide, and is a copolymer consisting of monomers with one or two or three groups or structures; when the low-molecular-weight polymer organic flocculant B is an anion, the structure of the low-molecular-weight polymer organic flocculant B is sodium polyacrylate, acrylamide and sodium acrylate copolymer and sodium polystyrene sulfonate sodium polystyrene phosphate; when the low-molecular-weight polymer organic flocculant B is nonionic, the structure of the low-molecular-weight polymer organic flocculant B has nonionic polyacrylamide or polyethylene oxide.
8. The all-organic composite flocculant according to claim 1, characterized in that: the low molecular weight high molecular weight organic flocculant C, the medium molecular weight high molecular weight organic flocculant D, the high molecular weight organic flocculant E and the ultrahigh molecular weight high molecular weight organic flocculant F are all selected from one or more of water-soluble anionic, cationic, nonionic and zwitterionic structure polymeric organic flocculants.
9. The all-organic composite flocculant according to claim 6, wherein: the low molecular weight high molecular weight organic flocculant C is a high molecular weight organic flocculant with the weight average molecular weight of 50-500 ten thousand, the medium molecular weight high molecular weight organic flocculant D is a high molecular weight organic flocculant with the weight average molecular weight of 500-1000 ten thousand, the high molecular weight organic flocculant E is a high molecular weight organic flocculant with the weight average molecular weight of 1000-1500 ten thousand, the ultrahigh molecular weight high molecular weight organic flocculant F is a high molecular weight organic flocculant with the weight average molecular weight of 1500-4500 ten thousand, the high molecular weight organic flocculant comprises a homopolymer, a copolymer and a polycondensate of the high molecular weight organic flocculant, and the monomer is a substance which has a plurality of side branch molecular structures, can be grafted and copolymerized into a tree shape, or a plurality of substances which have a ring block molecular structure, can be copolymerized into a multi-mesh honeycomb organic copolymer in a block manner.
10. Use of an all-organic composite flocculant according to claim 1 or 2 for the preparation of an aqueous pharmaceutical solution with a mass concentration of 0.1-60% of active substance or a dry solid pharmaceutical formulation with a mass concentration of 1-99.9%.
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| CN116497621A (en) * | 2023-04-26 | 2023-07-28 | 山鹰华南纸业有限公司 | Papermaking sludge recycling regulator and preparation method and application thereof |
| CN117023750A (en) * | 2023-10-09 | 2023-11-10 | 杭州尚善若水环保科技有限公司 | Treatment method of fluorine-containing wastewater |
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| CN115893623B (en) * | 2022-12-11 | 2024-03-12 | 安徽精高水处理有限公司 | Flocculant for printing and dyeing sewage and preparation method thereof |
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