CN107963719A - A kind of processing unit and method of high concentration rhodanate waste water - Google Patents
A kind of processing unit and method of high concentration rhodanate waste water Download PDFInfo
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- CN107963719A CN107963719A CN201711218516.3A CN201711218516A CN107963719A CN 107963719 A CN107963719 A CN 107963719A CN 201711218516 A CN201711218516 A CN 201711218516A CN 107963719 A CN107963719 A CN 107963719A
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- waste water
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- sludge
- nitrification tank
- rhodanate
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- 239000002351 wastewater Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012545 processing Methods 0.000 title claims abstract description 17
- 244000005700 microbiome Species 0.000 claims abstract description 37
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 claims abstract description 36
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000006731 degradation reaction Methods 0.000 claims abstract description 24
- 239000010865 sewage Substances 0.000 claims abstract description 23
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000015556 catabolic process Effects 0.000 claims abstract description 21
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 claims abstract description 16
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 16
- 239000011593 sulfur Substances 0.000 claims abstract description 15
- 239000010802 sludge Substances 0.000 claims description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 65
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 19
- 238000002306 biochemical method Methods 0.000 claims description 17
- 238000005273 aeration Methods 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 238000004062 sedimentation Methods 0.000 claims description 14
- 238000010992 reflux Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 235000016709 nutrition Nutrition 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000001580 bacterial effect Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000005352 clarification Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 241000894006 Bacteria Species 0.000 abstract description 24
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 20
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 16
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 abstract description 16
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 13
- 230000012010 growth Effects 0.000 abstract description 10
- 229910021529 ammonia Inorganic materials 0.000 abstract description 7
- 235000015097 nutrients Nutrition 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 241000233866 Fungi Species 0.000 abstract description 5
- 230000002906 microbiologic effect Effects 0.000 abstract description 5
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 241000186046 Actinomyces Species 0.000 abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 230000007269 microbial metabolism Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 13
- 241001495402 Nitrococcus Species 0.000 description 9
- 241001495394 Nitrosospira Species 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 241000589516 Pseudomonas Species 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- 230000035764 nutrition Effects 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 238000002386 leaching Methods 0.000 description 5
- 238000006396 nitration reaction Methods 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- 241000590020 Achromobacter Species 0.000 description 4
- 241000588986 Alcaligenes Species 0.000 description 4
- 241000605159 Nitrobacter Species 0.000 description 4
- 241000605122 Nitrosomonas Species 0.000 description 4
- 241001509286 Thiobacillus denitrificans Species 0.000 description 4
- 241000589651 Zoogloea Species 0.000 description 4
- 229960004424 carbon dioxide Drugs 0.000 description 4
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 4
- 241000195493 Cryptophyta Species 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 241000605118 Thiobacillus Species 0.000 description 3
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 3
- 241001148470 aerobic bacillus Species 0.000 description 3
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000000593 degrading effect Effects 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 241000108664 Nitrobacteria Species 0.000 description 2
- 241000192147 Nitrosococcus Species 0.000 description 2
- 241000192123 Nitrosovibrio Species 0.000 description 2
- 241000192121 Nitrospira <genus> Species 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 241000605268 Thiobacillus thioparus Species 0.000 description 2
- 241000607598 Vibrio Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000011953 bioanalysis Methods 0.000 description 2
- 238000002144 chemical decomposition reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 239000002207 metabolite Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000000386 microscopy Methods 0.000 description 2
- 230000009935 nitrosation Effects 0.000 description 2
- 238000007034 nitrosation reaction Methods 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- NMOJAXCSURVGEY-UHFFFAOYSA-N N#CC#N.[S] Chemical compound N#CC#N.[S] NMOJAXCSURVGEY-UHFFFAOYSA-N 0.000 description 1
- 241000187654 Nocardia Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 231100000570 acute poisoning Toxicity 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000010828 animal waste Substances 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000033077 cellular process Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- QPJDMGCKMHUXFD-UHFFFAOYSA-N cyanogen chloride Chemical compound ClC#N QPJDMGCKMHUXFD-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- UMTFPTCPRUEQHM-UHFFFAOYSA-N dicyanolead Chemical compound N#C[Pb]C#N UMTFPTCPRUEQHM-UHFFFAOYSA-N 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 150000002344 gold compounds Chemical class 0.000 description 1
- IZLAVFWQHMDDGK-UHFFFAOYSA-N gold(1+);cyanide Chemical compound [Au+].N#[C-] IZLAVFWQHMDDGK-UHFFFAOYSA-N 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000001261 hydroxy acids Chemical class 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000006385 ozonation reaction 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
- 230000036470 plasma concentration Effects 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- MNWBNISUBARLIT-UHFFFAOYSA-N sodium cyanide Chemical compound [Na+].N#[C-] MNWBNISUBARLIT-UHFFFAOYSA-N 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000004457 water analysis Methods 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- 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
- C02F2101/101—Sulfur compounds
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of bioremediation of high-concentration sulfur-containing cyanate waste water.The method of the present invention includes：Using rhodanate efficient degradation bacterium, SCN is utilized‑Required nutrient is grown as doing, by microbial metabolism is SO by rhodanide4 2‑、CO2、N2.Technical solution of the present invention can be in efficient degradation waste water rhodanide.Rhodanate wastewater degradation process is completed by a large amount of microorganisms, including bacterium, actinomyces and fungi, and cyanide and rhodanate are degraded to ammonia, carbon dioxide and sulfate by these microorganisms.The method that the oxidation and absorption of all rhodanides and cyanide usually through a large amount of microorganisms are combined is removed.Thiocyanate waste water microbiological treatment carries out in particular organisms oxidation pond, needs the microorganism growth conditions that artificial creation is suitable, cultivates rhodanate efficient degradation bacterium, makes full use of decomposition of the microorganism to rhodanate to purify sewage with high efficiency.Draining COD after processing<100mg/l, ammonia nitrogen<8mg/L、CN<0.5mg/l.
Description
Technical field
The present invention relates to field of environment engineering technology, and in particular to a kind of Biochemical method high-concentration sulfur-containing cyanate waste water
Processing method.It can be applied to the fields such as Industrial Wastewater Treatment.
Background technology
Thiocyanate ion (SCN-) it is a kind of negatively charged, polyatom, linear pattern ion, with-S-C ≡ N and-N=C=S
Two kinds of structures exist, and have preferable complexing.Rhodanide in textile printing and dyeing, becomes more meticulous as a kind of important industrial chemicals
The fields such as work, medical industry widely use.During industrial products are prepared, it is often excessive and cannot be completely anti-that it adds ratio
Should, cause substantial amounts of rhodanate to enter waste water system.Containing SCN-Waste water be directly discharged into environment and not only make a large amount of chemical industry former
Stream is lost, and also ecological environment can be impacted.Rhodanide enters useless also in the form of cyanide derivatives in industrial production
Aqueous systems, as gold macerates more than factory's rhodanide so that cyanide gold-leaching goes out the chemical reaction of process cyanide and sulphur and produces, in sulphur
Change in ore deposit Cyanide Leaching in waste water rhodanide concentration up to 2000~3000mgL-1, become content highest in Cyanide Leaching waste water
One of inorganic pollution, the major pollutants with the composition cyaniding leaching ore deposit waste water such as cyanide, heavy metal and ammonia nitrogen.
SCN-Water ecological setting can be polluted, also have harm to the health of biology.Rhodanate reduction order is F-
<Cl-<Br<CN-<SCN-<I；K2CrO7When method surveys COD value, 1mg SCN-Contribution to COD value is 1.10mg, is to be only second to phenols
Second largest COD sources.In addition, SCN-It is oxidized to discharge substantial amounts of ammonia nitrogen, and ammonia nitrogen is the master for causing body eutrophication
Pollutant is wanted, it can consume the dissolved oxygen content in water body, cause body eutrophication, SCN-With strong coordinating, easily with
Fe in water body3+、Cu2+Chroma in waste water height is caused Deng metal ion generation complex reaction generation metal complex.Thiocyanate radical from
Sub- stability is poor, the SCN in waste water-Easily generation extremely toxic substance cyanogen chloride is reacted with chlorine oxidation agent or be oxidized to cyaniding
Thing, causes wastewater toxicity to raise；SCN at the same time-Itself there is toxicity, SCN in normal human's blood plasma-Concentration is 0.1~0.4mg/L,
Excess intake rhodanate can hinder utilization of the body to iodine, cause human body acute poisoning.The sulphur in specific construction practice
Cyanide wastewater complicated component, the golden waste water that such as macerates, acrylic fiber wastewater, practice burnt waste water, agricultural chemicals waste water, its characteristic contamination sulphur removal
Substantial amounts of CN is accompanied by beyond cyanide-、NH4+- N, phenols, organic amine etc..Such wastewater treatment needs emphasis to examine how filter drops
Harm caused by low wastewater toxicity, colourity and reduction secondary pollution.
The chemical degradation method of thiocyanate waste water is commonly deep oxidation method, by SCN-It is oxidized to SO4 2+、HCO3 -、HN4+
It is removed etc. form.Wherein representative Pomolio-Celdecor process, sour chlorine method, Yin Kefa, acidifying absorption-neutralisation, Ozone, wet type
Air oxidation process, ion-exchange etc..By taking Ozonation as an example, 1g SCN are removed-Need the ozone of about 5 grams of consumption, place
Manage of high cost.It can be seen from the above that most of chemical degradation methods are big for the desulfurization waste liquor chemical cost for handling the SCN- containing high concentration,
It is costly although chemical method is effective and feasible, and secondary pollution problem easily is brought, as chlor-alkali easily causes the exceeded of chlorion.
The content of the invention
The present invention provides a kind of bioremediation of high concentration rhodanate waste water, can be efficiently in degrading waste water
Rhodanide.Including：Macerated rhodanate and the simultaneous low concentration cyanogen leached in waste water using Biochemical method gold
Compound (easily discharges cyanide<10mg/L), annual water inlet thiocyanate concn 2067mg/L, processing water outlet are dense in industrial practice
Degree is less than 0.56mg/L, removal rate up to 99.96%, highest removal rate up to 99.99%, the bioanalysis not only to rhodanate almost
Degradable, the processing to COD and ammonia nitrogen can reach integrated wastewater discharge standard requirement.Draining COD after processing<100mg/
L, ammonia nitrogen<15mg/L, CN<0.5mg/L.
Technical scheme：A kind of device of Biochemical method high-concentration sulfur-containing cyanate waste water, it mainly includes：
Regulating reservoir is connected with denitrification pond, and denitrification pond is sequentially communicated level-one nitrification tank, two level nitrification tank and sedimentation basin, sedimentation basin bottom
Connected with sludge-tank, air blower connects regulating reservoir, level-one nitrification tank and two level nitrification tank respectively；Sludge-tank top respectively with level-one
Nitrification tank is connected with two level nitrification tank；The level-one nitrification tank and two level nitrification tank installation biomembrane；The level-one nitrification
Thiocyanate efficient degradation bacterial activity sludge is placed in pond and two level nitrification tank.
The sedimentation index of the thiocyanate efficient degradation bacterial activity sludge：SVI=100~150mL/g.
The culture and domestication of the thiocyanate efficient degradation bacterial activity sludge：Waste water is introduced at biochemistry first
Reason system；When denitrification pool water level reaches design water level, underwater mixing plant is opened, and waste water is introduced into a two level nitrification tank,
When nitrification pool water level reaches design water level, open aerator and be aerated, the waste water after aeration enters sedimentation basin and carries out separation of solid and liquid
Afterwards, primary water is discharged；Start sludge reflux pump by the sludge reflux in sludge-tank to level-one nitrification tank.
The culture and acclimation conditions：PH value：7.5~8.5；Water temperature：25~30 DEG C；Dissolved oxygen：2.0~3.0mg/L；
Sludge age：15~20 days；Return sludge ratio：60~100%.
Nutritional agents is added in the nitrification tank：Organic carbon：Kjeldahl nitrogen：Phosphate=100：5：1.
The fresh dewatered sludge of similar sewage treatment plant is added in the one two level nitrification tank.
The aeration is intermittent aerating：After sewage is introduced nitrification tank, start air blower operation, stop after vexed exposure 5-7h
Aeration, then precipitates 1-2h, then fresh wastewater is supplemented into nitrification tank, while raw wastewater is discharged from effluent weir；Quantity of exchanged water can
The 25-30% held in nitrification tank is controlled, then repeatedly aforesaid operations, until continuum micromeehanics, start sludge reflux.
The Application way of the device of the Biochemical method high-concentration sulfur-containing cyanate waste water, what need to be handled contains thiocyanic acid
After salt waste water enters the progress biological denitrification processing of denitrification pond into the boosted pump of regulating reservoir；Enter back into and particular organisms are installed
The level-one nitrification tank and two level digester of film simultaneously inject air；Mixed liquor after microorganism nitrification processing eventually enters into precipitation
Pond, clarified separation, sludge are discharged into sludge-tank, and amount of activated sludge need to be back to nitrification tank or denitrification pond again, and the water of clarification reaches
Mark discharge.
The composition such as aerobic bacteria, anaerobic bacteria, amphimicrobe, fungi, protozoan and algae is included in the activated sludge
The ecosystem, mainly by the desulfurization bacterium of degraded rhodanate and nitrococcus, nitrifier and the denitrifying bacterium etc. of degradation of ammonia nitrogen
Composition.
The active sludge microorganism flora is by including the pseudomonas based on rhodanate of degrading
(Pseudomonas), achromobacter (Achromobacter), thiobacillus thioparus (Thiobacillus), thiobacillus denitrificans
(Bhiobacillus denitrificans) etc.；Nitrosomonas (Nitrosomonas), Asia based on degradation of ammonia nitrogen
Nitrococcus (Nitrosococcus), Nitrosospira (Nitrosospira), Nitrosolobus
(Nitrosolobus), nitrosation vibrio (Nitrosovibrio), Nitrobacter (Nitrobacter), Nitrococcus
(Nitrococcus), Nitraspira (Nitrospira), thiobacillus denitrificans (Bhiobacillus denitrificans),
Alcaligenes (Alcaligenes) etc..These bacterium directly can be cultivated and be tamed generation using thiocyanate waste water, comparatively fast
Activated sludge is turned out on ground can use inocalation method, i.e., the fresh dehydration that other are added into nitrification tank similar to sewage treatment plant is dirty
Mud.
Above-mentioned technical proposal can be seen that gives up since the embodiment of the present invention uses to macerate to leach using Biochemical method gold
Rhodanate in water can reach very high removal effect.
Beneficial effects of the present invention：
Microorganism can be catalyzed in waste water in rhodanate as nitrogen source and sulphur source during Biochemical method rhodanide waste water
SCN- generation NH4+, SO42- and CO2, and the pollutant component such as degradable ammonia nitrogen COD at the same time, overcomes materilization freatment method drop
Halfway shortcoming is solved, its treatment technology key is to turn out the dominant bacteria that can directly handle SCN- or the new work of use
Skill.
In the research and practice process to the method, the inventors found that：Rhodanate is cultivated efficiently to drop
Bacterium is solved, component S, C, N of SCN- are the nutrients needed for biological growth, and microorganism can be by the use of SCN- as doing
Nutrient needed for growth, metabolite SO42-, CO2, ammonia etc.；Oxidation 100mg SCN- can produce about 24mg HN4+-N, wherein
10% is bioavailable and is converted into biomass, other then enter water body in the form of NH4+, cause the NH4+ concentration in water to increase, because
This need to be carried out at the same time the biological treatment of ammonia nitrogen when using Biochemical method SCN-.SCN- degraded mainly under aerobic condition into
OK, biological treatment part except carbon unit and denitrogenation unit mainly by completing.
To in the application example of high concentration rhodanate biological wastewater treatment, at Guizhou Jin Feng mining industry Co., Ltd waste water
Science and engineering journey is analyzed, it is found that the rhodanide in waste water is mainly utilized in the group technology in aerobic process, and one
, there is rhodanide degradation function bacterium in Long-term selection and domestication of the level nitre pond sludge by high concentration rhodanide.Select level-one
Nitrification tank sludge bacterium source, the method tamed by cultivating high concentration, filter out using rhodanide as sole carbon, nitrogen and sulphur source from
Oxygen animalcule flora, the golden waste water that macerates which comes from high concentration rhodanide are tamed and can shown to sulphur cyanogen for a long time
The efficient degradation of compound.Its biological treatment in industrial practice can realize the rhodanate in efficient degradation waste water, removal rate
Up to 99.99%.
Microorganism can utilize cyanide, rhodanate synthesizing amino acid etc. in their cellular process.Some belong to
Nocardia and actinomyces can survive in the cyanide containing 50~100mg/L and rhodanide solution, and by adapting to
Property culture, additionally it is possible to be metabolized Cymag, potassium cyanide.As pseudomonas (Pseudomonas, sp) can be CN-It is decomposed into two
Carbonoxide and ammonia.1/3 cryanide ion of wherein cyanogen root is utilized by the cells, and is converted into CO2；Remaining 2/3 cryanide ion is then with three
Hydroxy acid circulates and assimilation.Cyanide, rhodanide can be decomposed into ammonia, carbon dioxide and sulfuric acid by Thiobacillus in the presence of sulphur
Salt.Nitrogen-fixing bacteria produce azotase, and cyanate is converted into ammonia and methane in reproducibility culture medium.The micro- life of sewage containing rhodanide
The biological chemistry action of thing is：
The process that rhodanate is aoxidized, occurs following reaction under the action of microorganism：
SCN-+2H2O+2O2=CO2+SO4 2-+NH4+ (1)
SCN-+3H2O+1/2O2=CO2+SO4 2-+NH4+ (2)
SCN-+2H2O=CO2+S2-+NH4++2OH- (3)
Reaction equation (1) carries out under aerobic conditions；Reaction equation (2) carries out under the conditions of anoxic or oxygen are restricted；Reaction
Formula (3) carries out under anaerobic.
Microbial destruction CN-One assume such as equation (4)：
CN-+3H2O+1/2O2=CO2+2OH-+NH4+ (4)
Processing high-concentration sulfur-containing cyanate wastewater biological degradation process is：Bioanalysis removes rhodanate and mainly divides three
Stage completes：
First stage：Aerobic ammonification, under aerobic conditions, by the metabolic process of bacterium rhodanate be converted into ammonia and
Sulfate, chemical formula are represented by：
2SCN-+5H2O+3O4 2-=SO4 2-+(NH4)SO4+CO2+CH2O (5)
This process needs to keep enough dissolved oxygen contents (DO).
Second stage：Aerobic nitrification, the ammonia nitrogen that will be produced the first stage carry out nitration reaction, nitrifying process through nitrifier
Middle generation NO2- N and NO3- N, this process also need nitre to consume substantial amounts of dissolved oxygen.In addition, there must be the alkali for keeping enough in sewage
Degree, because nitration reaction consumes alkali, causes pH value to decline, nitrifier is affected, reduce rate of nitrification.
Phase III：Denitrification or synchronous nitration-denitrification, denitrification carries out in denitrification pond, in the state of anoxic,
Nitrate nitrogen (NO2- N and NO3- N) effect through denitrifying bacterium is reduced to N2And it is removed.Anoxic denitrification must be nitrification liquid
(nitrification tank mixed liquor or secondary settling tank sludge) is back in the denitrification pond equipped with stirring or aerator and carries out.At the same time in waste water
There are enough carbon sources to carry out during additional nitration the inorganic carbon source consumed, this process also output alkali, rises basicity, can be with
Reduce the alkali consumption of nitration section.Synchronous nitration and denitrification reaction process can carry out in aerobic reactor at the same time, i.e. nitrobacteria
The state coexisted with denitrifying bacteria, nitrococcus and nitrobacteria are nitrate nitrogen (NO first by mineralized nitrogen2- N and NO3- N),
Nitrate nitrogen is converted into N by denitrifying bacterium again2Or NO2Gas.This application process has been confirmed in industrial practice.
Cyanide (is easily discharged using the rhodanate in Biochemical method gold Cyanide Leaching waste water and a small amount of cyanide<
10mg/L), annual water inlet thiocyanate concn 2067mg/L in industrial practice, processing aqueous concentration are less than 0.56mg/L, go
Except rate is up to 99.96%, up to 99.99%, which not only almost degrades rhodanate highest removal rate, and runs
Stablize, the processing to COD and ammonia nitrogen can reach integrated wastewater discharge standard requirement.Draining COD after processing<100mg/L, ammonia
Nitrogen<8mg/L.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow chart of high concentration rhodanate wastewater treatment method of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of bioremediation of high concentration rhodanate waste water, can efficiently remove waste water
In rhodanate, the embodiment of the present invention also provides corresponding call processing system.It is described in detail individually below.
The present invention is described in detail with reference to the accompanying drawings and examples.
A kind of device of Biochemical method high-concentration sulfur-containing cyanate waste water, it mainly includes：Regulating reservoir 1 and denitrification pond
2 connections, denitrification pond 2 is sequentially communicated level-one nitrification tank 3, two level nitrification tank 4 and sedimentation basin 5,5 bottom of sedimentation basin and sludge-tank 6
Connection, air blower 7 connect regulating reservoir 1, level-one nitrification tank 3 and two level nitrification tank 4 respectively；6 top of sludge-tank respectively with level-one nitre
Change pond 3 to connect with two level nitrification tank 4.Thiocyanate efficient degradation is placed in the level-one nitrification tank 3 and two level nitrification tank 4
Bacterial activity sludge.
Level-one nitrification tank 3 and two level nitrification tank 4 install biomembrane.Biofilm is the method for belonging to Aerobic biological process,
It is that waste water is passed through the biology that growth and breeding is formed on carrier filler such as aerobic microbiological and protozoan, metazoa
Film, absorption and degradation of organic substances, the method for being purified waste water.It is under abundant oxygen supply condition, is stablized with biomembrane and clear
The sewage water treatment method of stripping water.Biomembrane be by the aerobic bacteria of highly dense, anaerobic bacteria, amphimicrobe, fungi, protozoan with
And the ecosystem of the composition such as algae, its solid dielectric adhered to are known as filtrate or carrier.Biomembrane can outwards be divided into from filtrate
Anaerobic layer, aerobic layer, attachment water layer, movement water layer.
Biofilm is the aggregation that microorganism grows in a organized way.Bacterium is irreversible to be attached to inertia or active entities
Surface, breeding, differentiation, and some polysaccharide matrixes are secreted, by the phage populations parcel wherein aggregates of bacteria membranoid substance of formation.
Single biofilm can be formed by one or more different microorganisms.
Microorganism is set to grow the carrier (commonly referred to as filler) of aggregation in wastewater treatment structures, in the condition of oxygenation
Under, microorganism gathers attachment on filler surface and forms biomembrane, and by oxygenation, (oxygenate apparatus is by water treatment aeration wind turbine and aerator
Composition) waste water when flowing through filler with certain flow velocity, the microorganism in biomembrane absorbs the organic matter decomposed in water, makes sewage
It is purified, while microorganism is also bred, biomembrane thickens therewith.When biomembrane rises to certain thickness, to biology
The oxygen of film diffusion inside is restricted, its surface is still aerobic state, and internal layer can be in then anoxic even anaerobic state, and finally
Cause coming off for biomembrane.Then, filler surface also may proceed to grow new biomembrane, in cycles, make to purify the sewage.
Microorganism gathers on filler surface after attachment forms biomembrane, and due to the suction-operated of biomembrane, there are one on its surface
The very thin water layer of layer, the organic matter in water layer by biomembrane oxygenolysis, therefore the organic concentration concentration ratio in water layer into
Water is much lower, and when waste water is flowed through from biofilm surface, organic matter will be transferred to from moving waste water and be attached to life
In the water layer of thing film surface, and further adsorbed by biomembrane, meanwhile, the oxygen in air also passes through waste water and enters biology
Film water layer simultaneously internally shifts.
Microorganism on biomembrane decomposes pollutant under conditions of having dissolved oxygen and body carry out in itself it is new old
Metabolism, therefore the inorganic matter such as carbon dioxide produced is transferred to again along opposite direction from biomembrane by attachment water layer
In the waste water of flowing or in air.So, the pollutant load of water outlet is reduced, and waste water is purified.
The give up operating procedure of biological treatment system of rhodanate is：The thiocyanate waste water that need to be handled is passed through into regulating reservoir
Sewage pump, which enters, to be entered two-stage biological nitrification tank after denitrification pond carries out biological denitrification processing and injects air aeration, is made
Sewage is sufficiently mixed with activated sludge (thiocyanate efficient degradation bacterium), and supplies the enough dissolved oxygens of mixed liquor.At this moment
Rhodanate and other organic sludge things in sewage are decomposed by the aerobic microbiological in activated sludge, and last mixed liquor enters heavy
Shallow lake pond, activated sludge are separated with clarification of water, and amount of activated sludge returns to nitrification tank or denitrification pond, continues purification process,
The water discharge of clarification.Since activated sludge constantly increases in processing procedure, some residual sludge is pumped from being by sludge from sedimentation tank
Discharged in system, to maintain system to stablize.Wastewater degradation process is completed by a large amount of microorganisms, including bacterium, actinomyces and fungi,
Cyanide and rhodanate are degraded to ammonia, carbon dioxide and sulfate by these microorganisms.All rhodanides and cyanide lead to
The method that oxidation and absorption often through a large amount of microorganisms are combined is removed.Thiocyanate waste water microbiological treatment is in spy
Determine what is carried out in structures, need artificial creation's suitable micro-organisms growth conditions, cultivate rhodanate efficient degradation bacterium, fully
Sewage is purified with high efficiency using decomposition of the microorganism to rhodanate.
Thiocyanate waste water microbiological treatment carries out in particular structure, needs artificial creation's suitable micro-organisms to give birth to
Elongate member, cultivates rhodanate efficient degradation bacterium, makes full use of decomposition of the microorganism to rhodanate with high efficiency
Purify sewage.The culture and domestication of activated sludge, the culture or generation of activated sludge need strain and the nutrition needed for strain
Material, generally requires waste water BOD5/ CODcr ≈ 0.5 (generally should be more than 0.45), about 25 DEG C of water temperature, so that it may direct recruitment
Industry waste water is cultivated, and can also be inoculated with the fresh activated sludge of similar sewage treatment plant and be cultivated and tamed.Because of Industry Waste
Water water-quality constituents is more complicated, and nutrition content also needs according to circumstances additional battalion all than relatively low, during activated sludge culture
Material is supported into waste water, predominantly phosphorus and carbon nutrition.
Waste water is introduced into biochemical treatment system first.When denitrification pool water level reaches design water level, open underwater stirring and set
It is standby, and waste water is introduced into a two level nitrification tank, when nitrification pool water level reaches design water level, aerator (wind turbine) aeration is opened,
After waste water after aeration enters sedimentation basin progress separation of solid and liquid, primary water discharge；Start sludge reflux pump by the dirt in sludge-tank
Mud is back to level-one nitrification tank.The dissolved oxygen concentration of nitrification tank need to be controlled in 2.0~3.0mg/L or so.So after 5~6d
If (temperature is properly), just it is observed that the floccule (zoogloea) slightly obscured when surveying settling ratio with 1000mL graduated cylinders.For
The metabolite harmful to microorganism growth is supplemented the nutrients and excluded, waste water should be supplemented and original dirt is discharged by sedimentation basin
Water.Changing water can intermittently carry out, and can also be carried out continuously.Nitrification tank influent quality is detected, if influent quality component is insufficient
To be supplied to the enough nutrients of microorganism, then by organic carbon (TOC)：Kjeldahl nitrogen (TKN)：Phosphate (XPO4), meet 100：
5：The additional nutrients of 1 ratio, carbon nutrition is optional, adds cerelose, methanol, animal wastes etc., since thiocyanate gives up
For water containing sufficient nitrogen nutrition without additional nitrogen source, phosphorus nutrition is optional, adds tertiary sodium phosphate, potassium dihydrogen phosphate etc..
The method of intermittent aerating cultivation, such as can use and change water 2~4 times daily.After sewage is introduced nitrification tank, start drum
Fan operation, stops aeration after vexed exposure 6h, then precipitates 1h, then fresh wastewater is supplemented into nitrification tank, at the same by raw wastewater from
Effluent weir is discharged.Quantity of exchanged water can be controlled in the 25% of nitrification tank appearance, then repeatedly aforesaid operations, until continuum micromeehanics, start dirty
Mud flows back.Be important to arouse attention is preferably controlled regardless of intermittent aerating or continuous aeration, nitrification tank exit dissolved oxygen
2.0~3.0mg/L；The reflux ratio of sludge reflux is within 100%.According to activated sludge growth situation, aeration quantity is suitably adjusted,
So it is continued until when 30 minutes settling ratios of mixed liquor are 10%~30% and stops.Under conditions of 25 DEG C, generally by 15~
30d, it is possible to reach treatment effect.
Work as activated sludge concentration, i.e. MLSS concentration increases to a certain concentration, such as 1500mg/L, is detected with 1000mL graduated cylinders
When settling ratio SV is 30%, then index is settled：SVI=100~150 (mL/g), belong to the good index of activated sludge.Mark is lived
Property sludge for agricultural use reaches requirement, and sewage treatment plant can normal operation input.
If can also use inocalation method to turn out activated sludge quickly, i.e., it is similar dirty that other are added into aeration tank
The fresh dewatered sludge of water treatment plant.In order to accelerate activated sludge culture speed, nutriment is added such as into aeration nitrification tank
Excrement water etc. accelerates the breeding of biology., can be with after entering waste water in first time and being aerated and after vexed exposure interval changes water for several times
Using continuously changing water mode.When continuously changing water, sludge back flow quantity can flow back by 80%~100% amount.Change water can extend to 1.5~
2d once, to make full use of nutriment.General water treatment plant intends adding strain using appropriate, first intermittently changes water, continuously changes afterwards
Water mode culture microorganism.Ripe activated sludge has a good flocculation sediment performance, sludge include substantial amounts of zoogloea with
Infusorian protozoan, such as campanularian, beans shape worm, roaming worm, tired branch worm, and BOD can be made5There is more than 90% removal rate.Such as
Sewage treatment plant is required to processed sewage denitrification and dephosphorization, after the culture of activated sludge is basically completed, should also further by
Activated sludge acclimatization is to adapt to the requirement of denitrogenation dephosphorizing.
From activated sludge culture with domestication from, water analysis should as listed by being chemically examined water process index subjet, by project
Daily analysis record, as far as possible sufficiently chemically examines water quality, to grasp the progress of cultivation.
During activated sludge culture, domestication, by microorganism growing state, suitable control inflow and base-material is added, together
When control sludge reflux amount.The phase of taming and dociling is trained in activated sludge, should not be too aerated, pays attention to dissolved oxygen control in 2~3.0mg/L.
Sewage culture and domestication first stage, because inflow is little, constantly put into base-material, organic carbon (TOC)：Kjeldahl nitrogen
(TKN)：Phosphate (XPO4), 100 should be met：5：1 scope.And actual chemical examination detection should be made and verified.If TOC, XPO4Partially
It is small by more than 50%, corrected with cerelose or tertiary sodium phosphate.This will be verified once in each debugging stage.
Sludge-tank reflux pump is opened, prevents inactivation or the reduction of activated sludge.Because stage first stage MLSS concentration is very low,
The reflux ratio of returned sludge is preferably controlled as 60~100% or so of inflow.
During debugging, mixed liquor suspended solid, MLSS (MLSS) concentration of increase nitrification tank that be as fast as possible.MLSS is recorded to increase
Trend.Note that it is sure not to exclude sludge at this time, because without excess sludge.When the dewatered sludge strain of input reaches MLSS extremely
1000mg/L, carbon N∶P ratio meet microorganism growth needs, and the growth of microorganism is stepped up MLSS.Microscope inspection can be bright
Zoogloea increasing number, volume increase are appeared to, and border is more and more obvious.
According to microorganism microscopic examination situation, the dosage of nutrient base material is determined.If microorganism growth is vigorous, can gradually reduce
Base-material adds, until MLSS increases to 3000~5000mg/L.The dispensing of base-material can be generally terminated at this time.
Culture domestication time first stage was one to two week, in the case of first segment training smoothly, you can into the
Two-stage trains.Second stage training should continuously be run, including sludge reflux.With microbial acclimation it is smooth into
OK, the mixed genetic-neural network in nitrification tank (MLSS) will gradually increase.By normal operating MLSS reach 3000mg/L with
On, microscopy microorganism well-grown, 100 power microscope microscopies, zoogloea should reach more than dozens of, individual to increase, and border is clear
Clear, this is the mark that activated sludge culture succeeds.If not reaching requirement is appropriately extended the time.It is not less than 25 DEG C in water temperature
When, the training time of second stage, generally 2~3 weeks.The activated sludge culture of second stage is that base-material to be gradually reduced is thrown
Amount.
The technology controlling and process after cultivation is completed mainly for following project：
PH value：7.5~8.5；Water temperature：25~30 DEG C；Dissolved oxygen (DO)：2.0~3.0mg/L；Sludge age：15~20 days；
Return sludge ratio (%)：60~100%；Nutritional agents adds：Organic carbon (TOC)：Kjeldahl nitrogen (TKN)：Phosphate (XPO4)=
100：5：1.
The composition such as aerobic bacteria, anaerobic bacteria, amphimicrobe, fungi, protozoan and algae is included in the activated sludge
The ecosystem, mainly by the desulfurization bacterium of degraded rhodanate and nitrococcus, nitrifier and the denitrifying bacterium etc. of degradation of ammonia nitrogen
Composition.
The active sludge microorganism flora is by including the pseudomonas based on rhodanate of degrading
(Pseudomonas), achromobacter (Achromobacter), thiobacillus thioparus (Thiobacillus), thiobacillus denitrificans
(Bhiobacillus denitrificans) etc.；Nitrosomonas (Nitrosomonas), Asia based on degradation of ammonia nitrogen
Nitrococcus (Nitrosococcus), Nitrosospira (Nitrosospira), Nitrosolobus
(Nitrosolobus), nitrosation vibrio (Nitrosovibrio), Nitrobacter (Nitrobacter), Nitrococcus
(Nitrococcus), Nitraspira (Nitrospira), thiobacillus denitrificans (Bhiobacillus denitrificans),
Alcaligenes (Alcaligenes) etc..These bacterium directly can be cultivated and be tamed generation using thiocyanate waste water, if
Inocalation method can be also used in order to turn out activated sludge quickly, i.e., other are added into nitrification tank similar to the new of sewage treatment plant
Fresh dewatered sludge.
Above content is to combine the detailed description that optimal technical scheme is the present invention, it is impossible to assert the specific reality of invention
Apply and be only limitted to these, for the simple deduction made under the premise of inventive concept is not departed from and replace, should all be considered as this hair
Bright protection domain.
It should be noted that the content such as information exchange, implementation procedure between each unit in above device and system, by
In being based on same design with the method for the present invention embodiment, particular content can be found in the narration in the method for the present invention embodiment, herein
Repeat no more.
A kind of bioremediation of the high concentration rhodanate waste water provided above the embodiment of the present invention, carries out
It is discussed in detail, specific case used herein is set forth the principle of the present invention and embodiment, above example
Illustrate to be only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, according to
According to the thought of the present invention, there will be changes in specific embodiments and applications, in conclusion this specification content
It should not be construed as limiting the invention.
Claims (8)
- A kind of 1. device of Biochemical method high-concentration sulfur-containing cyanate waste water, it is characterised in that：It mainly includes：Regulating reservoir （1）With denitrification pond（2）Connection, denitrification pond（2）It is sequentially communicated level-one nitrification tank（3）, two level nitrification tank（4）And sedimentation basin （5）, sedimentation basin（5）Bottom and sludge-tank（6）Connection, air blower（7）Regulating reservoir is connected respectively（1）, level-one nitrification tank（3）With two Level nitrification tank（4）；Sludge-tank（6）Top respectively with level-one nitrification tank（3）With two level nitrification tank（4）Connection；The level-one nitre Change pond（3）With two level nitrification tank（4）Biomembrane is installed；The level-one nitrification tank（3）With two level nitrification tank（4）Interior placement sulfur-bearing Cyanate efficient degradation bacterial activity sludge.
- 2. the device of Biochemical method high-concentration sulfur-containing cyanate waste water according to claim 1, it is characterised in that：It is described Thiocyanate efficient degradation bacterial activity sludge sedimentation index：SVI=100~150mL/g.
- 3. the device of Biochemical method high-concentration sulfur-containing cyanate waste water according to claim 1, it is characterised in that：It is described Thiocyanate efficient degradation bacterial activity sludge culture and domestication：Thiocyanate waste water is introduced into biochemical treatment first System；When denitrification pool water level reaches design water level, underwater mixing plant is opened, and waste water is introduced into a two level nitrification tank, nitre When change pool water level reaches design water level, open aerator and be aerated, after the waste water after aeration enters sedimentation basin progress separation of solid and liquid, Primary water is discharged；Start sludge reflux pump by the sludge reflux in sludge-tank to level-one nitrification tank, repetition aforesaid operations.
- 4. the device of Biochemical method high-concentration sulfur-containing cyanate waste water according to claim 3, it is characterised in that：It is described Culture and acclimation conditions：PH value：7.5~8.5；Water temperature：25~30 DEG C；Dissolved oxygen：2.0~3.0mg/L；Sludge age：15~ 20 days；Return sludge ratio：60~100%.
- 5. the device of Biochemical method high-concentration sulfur-containing cyanate waste water according to claim 3, it is characterised in that：It is described Nitrification tank in add nutritional agents：Organic carbon：Kjeldahl nitrogen：Phosphate=100：5：1.
- 6. the device of Biochemical method high-concentration sulfur-containing cyanate waste water according to claim 3, it is characterised in that：It is described A two level nitrification tank in add the fresh dewatered sludge of similar sewage treatment plant.
- 7. the device of Biochemical method high-concentration sulfur-containing cyanate waste water according to claim 3, it is characterised in that：It is described Aeration be intermittent aerating：After sewage is introduced nitrification tank, start air blower operation, stop aeration, Ran Houchen after vexed exposure 5-7h Shallow lake 1-2h, then fresh wastewater is supplemented into nitrification tank, while raw wastewater is discharged from effluent weir；Quantity of exchanged water can be controlled in nitrification tank The 25-30% of appearance, then repeatedly aforesaid operations, until continuum micromeehanics, start sludge reflux.
- 8. the utilization side of the device of the Biochemical method high-concentration sulfur-containing cyanate waste water according to one of claim 1-7 Method, it is characterised in that：The thiocyanate waste water that need to be handled enters regulating reservoir（1）Boosted pump enters denitrification pond（2）Carry out After biological denitrification processing；Enter back into the level-one nitrification tank for being provided with particular organisms film（3）With two level digester（4）And inject sky Gas；Mixed liquor after microorganism nitrification processing eventually enters into sedimentation basin（5）, clarified separation, sludge is discharged into sludge-tank（6）, portion Activated sludge is divided to be back to nitrification tank or denitrification pond, the water qualified discharge of clarification again.
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|---|---|---|---|---|
| CN110436630A (en) * | 2019-09-02 | 2019-11-12 | 上海水合环境工程有限公司 | Toxic, high nitrogenous chemical engineering sewage coupled film biological treatment reactor |
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| CN110436630A (en) * | 2019-09-02 | 2019-11-12 | 上海水合环境工程有限公司 | Toxic, high nitrogenous chemical engineering sewage coupled film biological treatment reactor |
| CN110436630B (en) * | 2019-09-02 | 2021-11-19 | 上海水合环境工程有限公司 | Toxic and high-nitrogen-content chemical sewage coupling membrane biological treatment reactor |
| CN114480244A (en) * | 2022-03-09 | 2022-05-13 | 上海蓝科石化环保科技股份有限公司 | Method and device for culturing and enriching cyanogen degrading flora and application |
| CN115895994A (en) * | 2022-12-23 | 2023-04-04 | 东北大学 | Efficient cyanogen-reducing bacteria, enrichment method thereof and application of efficient cyanogen-reducing bacteria in degradation of complex cyanogen-containing wastewater |
| CN116750883A (en) * | 2023-08-21 | 2023-09-15 | 长春黄金研究院有限公司 | Starting method of thiocyanate wastewater biological treatment system in gold industry |
| CN116750883B (en) * | 2023-08-21 | 2023-12-08 | 长春黄金研究院有限公司 | Starting method of thiocyanate wastewater biological treatment system in gold industry |
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