CN109264887A - A kind of clinker leaching liquid processing method and its system - Google Patents
A kind of clinker leaching liquid processing method and its system Download PDFInfo
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- CN109264887A CN109264887A CN201811080279.3A CN201811080279A CN109264887A CN 109264887 A CN109264887 A CN 109264887A CN 201811080279 A CN201811080279 A CN 201811080279A CN 109264887 A CN109264887 A CN 109264887A
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- China
- Prior art keywords
- clinker
- water
- order reaction
- reaction pond
- leaching liquor
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- 238000002386 leaching Methods 0.000 title claims abstract description 79
- 239000007788 liquid Substances 0.000 title claims abstract description 30
- 238000003672 processing method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000006243 chemical reaction Methods 0.000 claims abstract description 61
- 239000002245 particle Substances 0.000 claims abstract description 27
- 238000000855 fermentation Methods 0.000 claims abstract description 26
- 230000004151 fermentation Effects 0.000 claims abstract description 26
- 238000004062 sedimentation Methods 0.000 claims abstract description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000008213 purified water Substances 0.000 claims abstract description 7
- 239000013522 chelant Substances 0.000 claims description 39
- 229910001385 heavy metal Inorganic materials 0.000 claims description 37
- 230000001376 precipitating effect Effects 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 25
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 19
- 239000011734 sodium Substances 0.000 claims description 14
- 239000002904 solvent Substances 0.000 claims description 14
- 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 13
- 229910052708 sodium Inorganic materials 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 claims description 8
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 8
- OOZZOPQSMSSQDF-UHFFFAOYSA-N [Na].[Na].[Na].N1=CN=CN=C1.S1SSC=C1 Chemical compound [Na].[Na].[Na].N1=CN=CN=C1.S1SSC=C1 OOZZOPQSMSSQDF-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000013049 sediment Substances 0.000 claims description 7
- 239000008399 tap water Substances 0.000 claims description 7
- 235000020679 tap water Nutrition 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 6
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 6
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 241000040710 Chela Species 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000356 contaminant Substances 0.000 abstract description 3
- 238000002791 soaking Methods 0.000 abstract 1
- 229920002401 polyacrylamide Polymers 0.000 description 24
- 239000000243 solution Substances 0.000 description 16
- 239000002893 slag Substances 0.000 description 10
- 239000010813 municipal solid waste Substances 0.000 description 9
- 238000004056 waste incineration Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 7
- 229950004394 ditiocarb Drugs 0.000 description 6
- 239000010791 domestic waste Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 101100372509 Mus musculus Vat1 gene Proteins 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002738 chelating agent Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- 241000251468 Actinopterygii Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium chloride Substances Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229940116318 copper carbonate Drugs 0.000 description 1
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical group 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011656 manganese carbonate Substances 0.000 description 1
- 229940093474 manganese carbonate Drugs 0.000 description 1
- 235000006748 manganese carbonate Nutrition 0.000 description 1
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 description 1
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000001741 organic sulfur group Chemical group 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 150000005837 radical ions Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000019980 sodium acid phosphate Nutrition 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- 229940043825 zinc carbonate Drugs 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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 present invention discloses a kind of clinker leaching liquid processing method and its system, include: in fermentation vat soaking and stirring clinker obtain leaching liquor, pH is adjusted in reaction tanks at different levels in leaching liquor respectively, carry out metal-chelating reaction, flocculant is added, it is staticly settled after generating alumina blossom particles towards sedimentation basin, then is passed through in clarifier-tank and purifies, be purified water.Metal contaminant content is low in the present invention treated clinker leaching liquor, and COD is low, provides good solution for the clinker leaching liquor processing in China, system operatio is easy, and equipment requirement is simple, high degree of automation, and operating is reliable, and processing is efficiently.
Description
Technical field
The present invention relates to sewage water treatment method technical field, it is related specifically to a kind of clinker leaching liquid processing method and its is
System.
Background technique
Today's society, as the productivity of the mankind greatly improves, the expansion of urban population and its consuming capacity consume energy
Power is continuously improved, and the amount of generated production and living rubbish is increasing in city, and the mode of process for producing house refuse is main
Garbage disposal is carried out by directly filling or by burning.Rubbish, which directly fills, can occupy excessive land resource, and rubbish is burnt
The bulkiness that can have both reduced rubbish is burnt, can also be generated electricity using the heat for generation of burning away the refuse, is more efficient now
Common trash processing way.It burns at present and has become one of main processing mode of domestic waste, according to statistics, rubbish is burnt
Burn the every domestic waste incineration residue for burning 1 ton of house refuse and generating 0.2 ton of factory.Thus it estimates, China generates life rubbish every year
More than 1,200 ten thousand tons of rubbish dregs of incinerator.Domestic waste incineration residue has become the important waste stream in China city.
Dregs of incinerator is the bottom ash of domestic waste incineration discharge, and clinker, which specifically includes that, burns molten product (melten glass
Class, silica gel salt, Sulfates, chloride, iron aluminium and its oxide, thin ash content etc.), it further include that part is dystectic non-ignitable
Object (such as ceramics and glass fragment, silica, feldspar substance) and a small amount of uncombusted organic substance.Slag collection is in slag
In hole, matched ash comprehensive utilization and disposal site near plant area are transported to by transport vehicle and handled, comprehensive utilization or landfill.It is burning
During, most of metal is enriched in domestic waste incineration residue in house refuse, leads to domestic waste incineration residue
In tenor more than hundred times of soil or more.
The landfill of clinker is open work, and rainwater, snow etc. flow through escorial body surface face during landfill, i.e. the leaching of generation clinker
Solution.Untreated clinker the leaching liquor often heavy metal containing high level and inorganic salts etc., if penetrated into without processing
In soil, it will cause the pollution of unrepairable to soil, can also pollute natural water.The leaching liquor of heavy metals exceeding standard not only can
The growth for influencing crops, can also influence indirectly people's health by food chain.Therefore, carry out waste incineration slag leaching
The innoxious process for treating of liquid has extremely important realistic meaning.
Currently, it is domestic very few about the treatment research of clinker leaching liquor, it there is no engineering application example, it is also very rare to arrive
Relevant document report.The present invention is directed to the deficiency of current technology, provides a kind of processing method of waste incineration slag leaching liquor
And its system.
Summary of the invention
The present invention provides the processing method and its system of a kind of waste incineration slag leaching liquor, treated clinker leaching liquor
Middle metal contaminant content is low, and COD is low, can reach the standard externally discharged, and facilitates after solving clinker landfill to generate
Pollution problem of the leaching liquor to environment, provide good solution for the clinker leaching liquor processing in China.
The invention is realized by the following technical scheme:
A kind of clinker leaching liquid processing method, comprising the following steps:
(1) clinker is poured into fermentation vat, 8~12 times of clinker weight of leaching liquor is added, using agitating device in fermentation vat
Clinker and water be sufficiently stirred breaing up, mixing time is 6~8h, 100~150r/min of mixing speed, 12~16h is stood,
Obtain clinker leaching liquor；Clinker leaching liquor obtained in the present invention is the leaching for simulating self-assembling formation after clinker landfill in nature
Liquid, and the processing of leaching liquor is carried out on its basis；
(2) clinker leaching liquor is passed through in first order reaction pond by strainer, acid solution is added and adjusts its pH to 9~11；It is logical to adjust pH
Cross addition HCl or H2SO4It realizes, in order to subsequent to provide suitable acid or alkali environment to metal-chelating reaction；
(3) it adjusts and leaching liquor is led into second order reaction pond after pH, the heavy metal chelant of 200~800ppm is added, in 50~
It is slowly stirred 20~30min under the speed of 100r/min, carries out metal-chelating reaction, it is made to generate metallo-chelate precipitating
Grain；
(4) leaching liquor after reacting in step (3) and metallo-chelate precipitating particle are led into third-order reaction pond together, wadding is added
Solidifying agent, is slowly stirred 5~10min, makes metallo-chelate precipitating convert alumina blossom particles precipitating；
(5) mixing liquid obtained in step (4) and alumina blossom particles precipitating are led into sedimentation basin together, stand 2~3h, keeps it heavy
It forms sediment complete；
(6) supernatant in sedimentation basin is passed through in clarifier-tank by strainer, after being purified, adjusts pH to neutrality, be purified
Water is discharged outward or is recycled after harmless treatment.
In the step (1), the leaching liquor is tap water or middle water；Middle water is also known as recycled water, refers to waste water or rain
After water is appropriately processed, reach certain water quality indicator, meet certain requirement, can carry out beneficial to the water used.It
Water quality between sewage and tap water, is up to state standards after municipal sewage, the purified processing of waste water, can be in a certain range
The undrinkable water inside used.The cost of recycled water is minimum, and from the point of view of environmental protection, reuse of wastewater helps to improve ecological ring
The benign cycle of Ecology is realized in border.
In the step (3), heavy metal chelant is prepared from the following raw materials in parts by weight: tri-thiol s-triazine trisodium salt
50~100 parts, 15~30 parts of sodium diethyldithiocarbamate, 5~10 parts of vulcanized sodium, 5~15 parts of sodium carbonate, biphosphate
10~20 parts of sodium.
Flocculant described in step (4) is PAC and PAM, and the additional amount of PAC is 50~100ppm, and the additional amount of PAM is
1~5ppm.
The present invention also provides a kind of clinker leaching liquid treating systems, including fermentation vat, first order reaction pond, second order reaction
Pond, third-order reaction pond, sedimentation basin and clarifier-tank are connected between each pond, wherein fermentation vat and one by the pipeline with water pump
Between order reaction pond, filter device is set, mixing plant, the setting of second order reaction pond is arranged in fermentation vat between sedimentation basin and clarifier-tank
The circulatory system and PAC, PAM throwing device is arranged in the circulatory system and heavy metal chelant throwing device, third-order reaction pond.
Several regions are arranged according to water flowing direction in the clarifier-tank, and active carbon interlayer, active carbon interlayer is arranged between region
By stainless steel grid and polytetrafluoroethylplastic plastic net, activated carbon grain is sandwiched in the active carbon interlayer of intermediate formation；Clarifier-tank end
Region connects outer discharge pipe line, and water flow obtains the water for meeting discharge standard by the purification of active carbon layer layer by layer, can direct emission
It is used to natural environment or for green area irrigation.
The mixing plant is the circular rotating grid disk for being set to fermentation vat middle and lower part, and grid disk gathers hollow grid,
Rotation stirring can be carried out around axis, waveform paddle is set above grid disk, and clinker rotates stirring on rotation grid disk, up and down
The clinker of position obtains the space come into full contact with water, and along with the stirring action of waveform paddle, pollutant is obtained in clinker
To abundant release.
The circulatory system is tangentially discharged for pond body middle and lower part connection pool circumference and follows in the second order reaction pond and third-order reaction pond
Endless tube, setting force (forcing) pump, which pressurizes, on circulation pipe draws water, and circulation pipe water inlet is arranged above pond body, the tangential export pipeline of pool side edge
While carrying out leaching liquor circulation, the effect for the stirring that is vortexed just is formd in reaction tank, circulation pipe is located above reaction tank,
At this point, entire reaction tank is formed a circulation stirring system, the metal-chelator being added after being allowed to, PAC, PAM reaction are more
Sufficiently, circulation pipe water inlet is scattering head, reacts PAC, PAM solution sufficiently with leaching liquor in pond；Wherein three-level is anti-
Answer pond circulation pipe water outlet periphery that strainer is set, the flocky precipitate that the filtration of strainer avoids the formation of enters pipeline circulation,
Circulation line is avoided to block.
The heavy metal chelant adding equipment includes solvent tank, and deployed heavy metal chelant is added in solvent tank
Solution, solvent tank pass through the circulation tube inlet of the piping connection circulatory system, flow sensor, water pump and gate valve are arranged on pipeline,
User can be set on equipment PLC according to the amount of required metal-chelator to be added, and equipment is fixed by flow sensor
Amount addition, when additive amount reaches, equipment remote control water pump stops, and gate valve is closed, and avoids waste.
PAC, PAM adding equipment includes multiple solvent tanks, and deployed PAC solution is separately added into solvent tank,
And PAM solution, each solvent tank pass through the circulation tube inlet of the piping connection circulatory system respectively, flow sensing are arranged on pipeline
Device, water pump and gate valve, user can be set, equipment passes through according to the amount of required PAC to be added or PAM on equipment PLC
Flow sensor quantitatively adds, and when additive amount reaches, equipment remote control water pump stops, and gate valve is closed, quantitative to add, accurately
Reliably.
By the analysis and detection of applicant, clinker leaching liquor mainly has following characteristics: 1) strong alkaline water, pH be 12~
13；2) salinity is higher, and TDS is 2000~5000 mg/L；3) inorganic salts are mainly contained, content of organics is few；4) containing a small amount of
Heavy metal, wherein lead doping；It can be seen that clinker leaching liquor in strong basicity from detection data analysis water quality characteristics, pH is up to 12
~13, COD content are few, mainly contain inorganic salts, and major pollutants are heavy metal lead, therefore are not suitable for sinking using hydroxide
Shallow lake partition method is handled.
Tri-thiol s-triazine trisodium salt (abbreviation TMT), molecular formula Na3C3N3S3.It is the divalent in chelating precipitation water body
Agent for capturing is often used with monovalent heavy metal ion, can chelate to form extremely difficult molten object with various heavy such as mercury, cadmium, lead, chromium plasma
Matter, and the water chelate with very good chemical stability.The aqueous solution that TMT common commercial form is 15%, is commonly called as
TMT-15.TMT will not be to environmental danger, still will not be to fish when in every cubic metre of waste water containing up to 12000mL
Deng existence cause adverse effect, therefore, TMT is a kind of environmentally friendly organic sulfur medicament.TMT is formed with heavy metal ion
Precipitate particles it is smaller, the effects of being caught by PAC and PAM adsorption bridging and net, can make precipitate particles be condensed into compared with
Big flocky precipitate is conducive to the separation removal of sediment.
Sodium diethyldithiocarbamate, molecular formula (C2H5)2NCSSNa·3H2O, white to colorless plate crystal.Have
Hygroscopicity.It is soluble easily in water, it is dissolved in ethyl alcohol, methanol, acetone, does not dissolve in ether and benzene.Aqueous solution is in alkalinity and gradually decomposes.Meet acid
Carbon disulfide can be isolated and make solutions turbid.Diethyldithiocar bamic acid root can pass through two with many " soft " metal ions
A sulphur atom chelating, in combination with heavy metal such as copper, cadmium, vanadium, nickel and cobalt etc..
Vulcanized sodium is also known as smelly alkali, smelly soda, yellow alkali, akali sulphide.Vulcanized sodium is inorganic compound, and pure vulcanized sodium is colourless knot
Crystalline flour end, moisture absorption is strong, soluble easily in water.Vulcanized sodium is in the treatment of waste water derived from the mechanism of action of heavy metal, the sulphur after hydrolysis
Ion and metal ion have very strong binding ability, and are formed by metal sulfide solubility product constant compared with metal hydroxides
It is much smaller with complex compound.The present invention adds going for the alkali solubility heavy metal that suitable vulcanized sodium can help in clinker leaching liquor
It removes.
Sodium carbonate, molecular formula Na2CO3, it is the powder or particle of white odorless under room temperature, there is water imbibition.Carbonic acid acid
Radical ion can generate difficulty soluble salt precipitating, such as copper carbonate, zinc carbonate, manganese carbonate with heavy metal ion most in water, use
Sodium carbonate goes removing heavy metals to have the advantages that economically cheap, easy, quick, environmentally friendly, harm to the human body is few.
Sodium dihydrogen phosphate is also known as sodium acid phosphate, molecular formula NaH2PO4, soluble easily in water, colourless crystallization or white crystalline
Powder, it is odorless.Potassium dihydrogen phosphate is added in the present invention can combine with heavy metal ion, help speed up heavy metal precipitation
It is formed.
PAC, the English abbreviation of aluminium polychloride, the entitled Polyaluminium Chloride of foreign language, also referred to as alkali formula chlorination
Aluminium is between AlCl3With Al (OH)3Between a kind of water-soluble inorganic high molecular polymer, chemical general formula be [Al2(OH)
nCl6N] m, wherein m represents extent of polymerization, is commonly used for water purification agent or coagulant.Aluminium polychloride has a wide range of application, and adapts to aqueous
Extensively, big alumen ustum is easily quickly formed, sedimentation function is good, when water temperature is low, can still keep stable sedimentation effect.
PAM is the abbreviation of Polyacrylamide, and Chinese is polyacrylamide, is common non-ionic high score
Sub- flocculant, molecular weight 1,500,000-2,000 ten thousand.Polyacrylamide amine molecule can build bridge with the suspended particles being scattered in solution to be inhaled
It is attached, there is extremely strong flocculation.PAC and PAM is used cooperatively in the processing of clinker leaching liquor of the present invention, makes its flocculating effect more
It is good.
The medicine have the advantages that
1, metal contaminant content is low in the present invention treated clinker leaching liquor, and COD (COD) is low, can achieve pair
The standard of outer discharge, pollution problem of the leaching liquor for helping to solve to generate after slag landfill to environment, is the clinker leaching in China
Liquid processing provides good solution.
2, heavy metal chelant used in the present invention tests the formula obtained after study, by organic sequestering agent with it is inorganic
Chelating agent combines, and sequestering power is strong, and heavy metal removing rate is high, and cost of material is low, and at a wider pH range in can play
Good effect, with the Cu in waste water2+、Cd2+、Hg2+、Pb2+、Mn2+、Ni2+、Zn2+、Cr3+Etc. various heavy metal ion
The flocculent deposit for learning reaction, and being quickly generated insoluble, low water content in a short time, being easy filtering removal, to reach
The effect of removing heavy metals ion, makes waste water reach discharge standard.
3, present system fortune is easy to operate, and equipment requirement is simple, high degree of automation, and operating is reliable, and processing is efficient.
Detailed description of the invention
Fig. 1 is process flow chart of the invention；
Fig. 2 is system structure connection schematic diagram of the invention；
Figure label explanation:
1, fermentation vat；11, mixing plant；12, filter device；13, water pump；2, first order reaction pond；21, water pump；3, second order reaction
Pond；31, circulation pipe；32, force (forcing) pump；33, heavy metal chelant throwing device；4, third-order reaction pond；41, circulation pipe；42, it pressurizes
Pump；43, PAC, PAM throwing device；44, strainer；45, water pump；5, sedimentation basin；51, filter device；52, water pump；6, clarifier-tank；
61, active carbon interlayer；62, water pump.
Specific embodiment
Clinker leaching liquid treating system includes fermentation vat 1, first order reaction pond 2, second order reaction pond 3, third-order reaction pond 4, sinks
Shallow lake pond 5 and clarifier-tank 6 are connected between each pond by the pipeline with water pump, wherein between fermentation vat 1 and first order reaction pond 2,
Filter device is set between sedimentation basin 5 and clarifier-tank 6, and mixing plant 11 is arranged in fermentation vat 1, and cyclic system is arranged in second order reaction pond 3
The circulatory system and PAC, PAM throwing device 43 is arranged in system and heavy metal chelant throwing device 33, third-order reaction pond 4.
Several regions are arranged according to water flowing direction in the clarifier-tank, and active carbon interlayer 31, terminal region is arranged between region
Connect outer discharge pipe line.
The mixing plant 11 is the circular rotating grid disk for being set to round fermentation vat middle and lower part, and grid disk gathers hollow out
Grid can carry out rotation stirring around axis, waveform paddle is arranged above grid disk.
The circulatory system is that pond body middle and lower part connection pool circumference is tangentially discharged in the second order reaction pond 3 and third-order reaction pond 4
Circulation pipe, setting force (forcing) pump, which pressurizes, on circulation pipe draws water, and circulation pipe water inlet is arranged above pond body, wherein third-order reaction pond 4
Strainer 44 is arranged in circulation pipe water outlet periphery.
The heavy metal chelant adding equipment 33 includes solvent tank, and solvent tank passes through the circulation of the piping connection circulatory system
Flow sensor, water pump and gate valve are arranged on pipeline for tube inlet.
PAC, PAM adding equipment 43 includes two solvent tanks, and a splendid attire PAC solution, a splendid attire PAM solution is every
A solvent tank passes through the circulation tube inlet of the piping connection circulatory system, and flow sensor, water pump and gate valve is arranged on pipeline.
According to above-mentioned processing system, following example 1~4 are carried out:
Embodiment 1
A kind of clinker leaching liquid processing method, comprising the following steps:
(1) clinker is poured into fermentation vat, 10 times of clinker weight of tap water is added, using agitating device by furnace in fermentation vat
Slag and water be sufficiently stirred breaing up, mixing time 8h, mixing speed 120r/min, stand 14h, obtain clinker leaching liquor；
(2) clinker leaching liquor is passed through in first order reaction pond by strainer, acid solution is added and adjusts its pH to 10.5；
(3) it adjusts pH and leaching liquor is led into second order reaction pond later, the heavy metal chelant of 500ppm is added, in 50r/min's
It is slowly stirred 25min under speed, carries out metal-chelating reaction, it is made to generate metallo-chelate precipitating particle；
(4) leaching liquor after reacting in step (3) and metallo-chelate precipitating particle are led into third-order reaction pond together, wadding is added
Solidifying agent, is slowly stirred 6min, makes metallo-chelate precipitating convert alumina blossom particles precipitating；
(5) mixing liquid obtained in step (4) and alumina blossom particles precipitating are led into sedimentation basin together, stand 2.5h, keeps it heavy
It forms sediment complete；
(6) supernatant in sedimentation basin is passed through in clarifier-tank by strainer, after being purified, adjusts pH to neutrality, be purified
Water.
In the step (3), heavy metal chelant is prepared from the following raw materials in parts by weight: tri-thiol s-triazine trisodium salt
100 parts, 20 parts of sodium diethyldithiocarbamate, 6 parts of vulcanized sodium, 11 parts of sodium carbonate, 15 parts of sodium dihydrogen phosphate.
Flocculant described in step (4) is PAC and PAM, and the additional amount of PAC is 80ppm, and the additional amount of PAM is 3ppm.
Embodiment 2
A kind of clinker leaching liquid processing method, comprising the following steps:
(1) clinker is poured into fermentation vat, 10 times of clinker weight of tap water is added, using agitating device by furnace in fermentation vat
Slag and water be sufficiently stirred breaing up, mixing time 6h, mixing speed 150r/min, stand 15h, obtain clinker leaching liquor；
(2) clinker leaching liquor is passed through in first order reaction pond by strainer, acid solution is added and adjusts its pH to 10；
(3) it adjusts pH and leaching liquor is led into second order reaction pond later, the heavy metal chelant of 400ppm is added, in 60r/min's
It is slowly stirred 20min under speed, carries out metal-chelating reaction, it is made to generate metallo-chelate precipitating particle；
(4) leaching liquor after reacting in step (3) and metallo-chelate precipitating particle are led into third-order reaction pond together, wadding is added
Solidifying agent, is slowly stirred 5min, makes metallo-chelate precipitating convert alumina blossom particles precipitating；
(5) mixing liquid obtained in step (4) and alumina blossom particles precipitating are led into sedimentation basin together, stand 2.5h, keeps it heavy
It forms sediment complete；
(6) supernatant in sedimentation basin is passed through in clarifier-tank by strainer, after being purified, adjusts pH to neutrality, be purified
Water.
In the step (3), heavy metal chelant is prepared from the following raw materials in parts by weight: tri-thiol s-triazine trisodium salt
90 parts, 15 parts of sodium diethyldithiocarbamate, 8 parts of vulcanized sodium, 13 parts of sodium carbonate, 18 parts of sodium dihydrogen phosphate.
Flocculant described in step (4) is PAC and PAM, and the additional amount of PAC is 100ppm, and the additional amount of PAM is
4ppm。
Embodiment 3
A kind of clinker leaching liquid processing method, comprising the following steps:
(1) clinker is poured into fermentation vat, 10 times of clinker weight of tap water is added, using agitating device by furnace in fermentation vat
Slag and water be sufficiently stirred breaing up, mixing time 7h, mixing speed 150r/min, stand 14h, obtain clinker leaching liquor；
(2) clinker leaching liquor is passed through in first order reaction pond by strainer, acid solution is added and adjusts its pH to 10；
(3) it adjusts pH and leaching liquor is led into second order reaction pond later, the heavy metal chelant of 600ppm is added, in 80r/min's
It is slowly stirred 25min under speed, carries out metal-chelating reaction, it is made to generate metallo-chelate precipitating particle；
(4) leaching liquor after reacting in step (3) and metallo-chelate precipitating particle are led into third-order reaction pond together, wadding is added
Solidifying agent, is slowly stirred 6min, makes metallo-chelate precipitating convert alumina blossom particles precipitating；
(5) mixing liquid obtained in step (4) and alumina blossom particles precipitating are led into sedimentation basin together, stand 2.5h, keeps it heavy
It forms sediment complete；
(6) supernatant in sedimentation basin is passed through in clarifier-tank by strainer, after being purified, adjusts pH to neutrality, be purified
Water.
In the step (3), heavy metal chelant is prepared from the following raw materials in parts by weight: tri-thiol s-triazine trisodium salt
100 parts, 15 parts of sodium diethyldithiocarbamate, 10 parts of vulcanized sodium, 10 parts of sodium carbonate, 19 parts of sodium dihydrogen phosphate.
Flocculant described in step (4) is PAC and PAM, and the additional amount of PAC is 60ppm, and the additional amount of PAM is
3.5ppm。
Embodiment 4
A kind of clinker leaching liquid processing method, comprising the following steps:
(1) clinker is poured into fermentation vat, 10 times of clinker weight of tap water is added, using agitating device by furnace in fermentation vat
Slag and water be sufficiently stirred breaing up, mixing time 6h, mixing speed 120r/min, stand 16h, obtain clinker leaching liquor；
(2) clinker leaching liquor is passed through in first order reaction pond by strainer, acid solution is added and adjusts its pH to 11；
(3) it adjusts pH and leaching liquor is led into second order reaction pond later, the heavy metal chelant of 500ppm is added, in 50r/min's
It is slowly stirred 25min under speed, carries out metal-chelating reaction, it is made to generate metallo-chelate precipitating particle；
(4) leaching liquor after reacting in step (3) and metallo-chelate precipitating particle are led into third-order reaction pond together, wadding is added
Solidifying agent, is slowly stirred 5min, makes metallo-chelate precipitating convert alumina blossom particles precipitating；
(5) mixing liquid obtained in step (4) and alumina blossom particles precipitating are led into sedimentation basin together, stand 2.5h, keeps it heavy
It forms sediment complete；
(6) supernatant in sedimentation basin is passed through in clarifier-tank by strainer, after being purified, adjusts pH to neutrality, be purified
Water.
In the step (3), heavy metal chelant is prepared from the following raw materials in parts by weight: tri-thiol s-triazine trisodium salt
100 parts, 25 parts of sodium diethyldithiocarbamate, 8 parts of vulcanized sodium, 12 parts of sodium carbonate, 17 parts of sodium dihydrogen phosphate.
Flocculant described in step (4) is PAC and PAM, and the additional amount of PAC is 100ppm, and the additional amount of PAM is
4ppm。
Water quality parameter is as shown in the table before and after the processing for clinker leaching liquor in above-described embodiment:
| Analysis project | pH | COD(mg/L) | Copper (mg/L) | Zinc (mg/L) | Lead (mg/L) | Total nitrogen (mg/L) |
| Leaching liquor water quality parameter | 12.93 | 108 | 0.42 | 0.64 | 0.72 | 3.54 |
| Embodiment 1 | 7.2 | 34.2 | ND | 0.038 | ND | 1.01 |
| Embodiment 2 | 7.3 | 55 | ND | ND | ND | 1.91 |
| Embodiment 3 | 7.1 | 10.8 | ND | 0.038 | ND | 0.89 |
| Embodiment 4 | 7.4 | 37.5 | ND | ND | ND | 1.78 |
Note: ND expression is not detected.
It is above-mentioned as it can be seen that clinker leaching liquor after treatment can reach discharge standard, after pH is adjusted to neutrality, each metal
Content it is lower or be not detected, illustrate good to the copper in clinker leaching liquor, zinc, the removal effect of lead；It is chemical after processing
Oxygen demand is low, and total nitrogen content is low, can reach the standard externally discharged.
Claims (10)
1. a kind of clinker leaching liquid processing method, which comprises the following steps:
(1) clinker is poured into fermentation vat, 8~12 times of clinker weight of leaching liquor is added, using agitating device in fermentation vat
Clinker and water be sufficiently stirred breaing up, mixing time is 6~8h, 100~150r/min of mixing speed, 12~16h is stood,
Obtain clinker leaching liquor；
(2) clinker leaching liquor is passed through in first order reaction pond by strainer, acid solution is added and adjusts its pH to 9~11；
(3) it adjusts and leaching liquor is led into second order reaction pond after pH, the heavy metal chelant of 200~800ppm is added, in 50~
It is slowly stirred 20~30min under the speed of 100r/min, carries out metal-chelating reaction；
(4) leaching liquor after reacting in step (3) and metallo-chelate precipitating particle are led into third-order reaction pond together, wadding is added
Solidifying agent, is slowly stirred 5~10min, makes metallo-chelate precipitating convert alumina blossom particles precipitating；
(5) mixing liquid obtained in step (4) and alumina blossom particles precipitating are led into sedimentation basin together, stand 2~3h, keeps it heavy
It forms sediment complete；
(6) supernatant in sedimentation basin is passed through in clarifier-tank by strainer, after being purified, adjusts pH to neutrality, be purified
Water.
2. clinker leaching liquid processing method according to claim 1, it is characterised in that: in the step (1), the leaching
Extract is tap water or middle water.
3. clinker leaching liquid processing method according to claim 1, it is characterised in that: in the step (3), heavy metal chela
Mixture is prepared from the following raw materials in parts by weight: 50~100 parts of tri-thiol s-triazine trisodium salt, diethyldithiocar bamic acid
15~30 parts of sodium, 5~10 parts of vulcanized sodium, 5~15 parts of sodium carbonate, 10~20 parts of sodium dihydrogen phosphate.
4. clinker leaching liquid processing method according to claim 1, it is characterised in that: flocculant described in step (4)
For PAC and PAM, the additional amount of PAC is 50~100ppm, and the additional amount of PAM is 1~5ppm.
5. a kind of clinker leaching liquid treating system, it is characterised in that: including fermentation vat (1), first order reaction pond (2), second order reaction
Pond (3), third-order reaction pond (4), sedimentation basin (5) and clarifier-tank (6) are connected between each pond by the pipeline with water pump,
Between middle fermentation vat (1) and first order reaction pond (2), filter device, fermentation vat (1) are set between sedimentation basin (5) and clarifier-tank (6)
It is arranged mixing plant (11), the circulatory system and heavy metal chelant throwing device (33), third-order reaction is arranged in second order reaction pond (3)
The circulatory system and PAC, PAM throwing device (43) is arranged in pond (4).
6. clinker leaching liquid treating system according to claim 5, it is characterised in that: the clarifier-tank (6) is according to water flowing
Several regions are arranged in direction, active carbon interlayer (61) are arranged between region, terminal region connects outer discharge pipe line.
7. clinker leaching liquid treating system according to claim 6, it is characterised in that: the mixing plant (11) is setting
Circular rotating grid disk in fermentation vat middle and lower part, grid disk gather hollow grid, and rotation stirring, grid disk can be carried out around axis
Waveform paddle is arranged in top.
8. clinker leaching liquid treating system according to claim 5, it is characterised in that: the second order reaction pond (3) and three
The circulatory system is that pond body middle and lower part connection pool circumference tangentially goes out water-circulating pipe in order reaction pond (4), and force (forcing) pump is arranged on circulation pipe
Pressurization is drawn water, and circulation pipe water inlet is arranged above pond body, and wherein strainer is arranged in third-order reaction pond (4) circulation pipe water outlet periphery
(44).
9. clinker leaching liquid treating system according to claim 5, it is characterised in that: the heavy metal chelant, which adds, to be set
Standby (33) include solvent tank, and solvent tank passes through circulation pipe (31) entrance of the piping connection circulatory system, and setting flow passes on pipeline
Sensor, water pump and gate valve.
10. clinker leaching liquid treating system according to claim 5, it is characterised in that: PAC, PAM adding equipment
It (43) include multiple solvent tanks, each solvent tank passes through circulation pipe (41) entrance of the piping connection circulatory system, is arranged on pipeline
Flow sensor, water pump and gate valve.
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Application publication date: 20190125 |