CN117585805A - 一种基于c-s耦合强化废水脱硫脱氮的方法 - Google Patents
一种基于c-s耦合强化废水脱硫脱氮的方法 Download PDFInfo
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- CN117585805A CN117585805A CN202311341361.8A CN202311341361A CN117585805A CN 117585805 A CN117585805 A CN 117585805A CN 202311341361 A CN202311341361 A CN 202311341361A CN 117585805 A CN117585805 A CN 117585805A
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- Prior art keywords
- denitrification
- wastewater
- coupling
- reaction vessel
- desulfurization
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Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000008878 coupling Effects 0.000 title claims abstract description 20
- 238000010168 coupling process Methods 0.000 title claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 20
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 19
- 230000023556 desulfurization Effects 0.000 title claims abstract description 19
- 238000005728 strengthening Methods 0.000 title claims abstract description 8
- 230000001651 autotrophic effect Effects 0.000 claims abstract description 44
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 41
- 239000011593 sulfur Substances 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 33
- 241000894006 Bacteria Species 0.000 claims abstract description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 239000010802 sludge Substances 0.000 claims abstract description 11
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 230000001580 bacterial effect Effects 0.000 claims abstract description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 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 claims description 10
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 9
- 239000001632 sodium acetate Substances 0.000 claims description 9
- 235000017281 sodium acetate Nutrition 0.000 claims description 9
- ALYNCZNDIQEVRV-UHFFFAOYSA-N 4-aminobenzoic acid Chemical compound NC1=CC=C(C(O)=O)C=C1 ALYNCZNDIQEVRV-UHFFFAOYSA-N 0.000 claims description 8
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 8
- PVNIIMVLHYAWGP-UHFFFAOYSA-N Niacin Chemical compound OC(=O)C1=CC=CN=C1 PVNIIMVLHYAWGP-UHFFFAOYSA-N 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 235000010755 mineral Nutrition 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 229940048181 sodium sulfide nonahydrate Drugs 0.000 claims description 6
- WMDLZMCDBSJMTM-UHFFFAOYSA-M sodium;sulfanide;nonahydrate Chemical group O.O.O.O.O.O.O.O.O.[Na+].[SH-] WMDLZMCDBSJMTM-UHFFFAOYSA-M 0.000 claims description 6
- 229940088594 vitamin Drugs 0.000 claims description 6
- 229930003231 vitamin Natural products 0.000 claims description 6
- 235000013343 vitamin Nutrition 0.000 claims description 6
- 239000011782 vitamin Substances 0.000 claims description 6
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 claims description 4
- GHOKWGTUZJEAQD-ZETCQYMHSA-N (D)-(+)-Pantothenic acid Chemical compound OCC(C)(C)[C@@H](O)C(=O)NCCC(O)=O GHOKWGTUZJEAQD-ZETCQYMHSA-N 0.000 claims description 4
- QWMFKVNJIYNWII-UHFFFAOYSA-N 5-bromo-2-(2,5-dimethylpyrrol-1-yl)pyridine Chemical compound CC1=CC=C(C)N1C1=CC=C(Br)C=N1 QWMFKVNJIYNWII-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- AUNGANRZJHBGPY-SCRDCRAPSA-N Riboflavin Chemical compound OC[C@@H](O)[C@@H](O)[C@@H](O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-SCRDCRAPSA-N 0.000 claims description 4
- 229940037003 alum Drugs 0.000 claims description 4
- 229960004050 aminobenzoic acid Drugs 0.000 claims description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 4
- 229940044197 ammonium sulfate Drugs 0.000 claims description 4
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 4
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- LLSDKQJKOVVTOJ-UHFFFAOYSA-L calcium chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Ca+2] LLSDKQJKOVVTOJ-UHFFFAOYSA-L 0.000 claims description 4
- 229940052299 calcium chloride dihydrate Drugs 0.000 claims description 4
- GFHNAMRJFCEERV-UHFFFAOYSA-L cobalt chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Co+2] GFHNAMRJFCEERV-UHFFFAOYSA-L 0.000 claims description 4
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 claims description 4
- OVBPIULPVIDEAO-LBPRGKRZSA-N folic acid Chemical compound C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-LBPRGKRZSA-N 0.000 claims description 4
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 4
- AGBQKNBQESQNJD-UHFFFAOYSA-M lipoate Chemical compound [O-]C(=O)CCCCC1CCSS1 AGBQKNBQESQNJD-UHFFFAOYSA-M 0.000 claims description 4
- 235000019136 lipoic acid Nutrition 0.000 claims description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 4
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 4
- ISPYRSDWRDQNSW-UHFFFAOYSA-L manganese(II) sulfate monohydrate Chemical compound O.[Mn+2].[O-]S([O-])(=O)=O ISPYRSDWRDQNSW-UHFFFAOYSA-L 0.000 claims description 4
- LAIZPRYFQUWUBN-UHFFFAOYSA-L nickel chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Ni+2] LAIZPRYFQUWUBN-UHFFFAOYSA-L 0.000 claims description 4
- 229960003512 nicotinic acid Drugs 0.000 claims description 4
- 235000001968 nicotinic acid Nutrition 0.000 claims description 4
- 239000011664 nicotinic acid Substances 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 239000011684 sodium molybdate Substances 0.000 claims description 4
- 235000015393 sodium molybdate Nutrition 0.000 claims description 4
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 4
- 229960002663 thioctic acid Drugs 0.000 claims description 4
- 239000011592 zinc chloride Substances 0.000 claims description 4
- 235000005074 zinc chloride Nutrition 0.000 claims description 4
- 235000021317 phosphate Nutrition 0.000 claims description 3
- GHOKWGTUZJEAQD-UHFFFAOYSA-N Chick antidermatitis factor Natural products OCC(C)(C)C(O)C(=O)NCCC(O)=O GHOKWGTUZJEAQD-UHFFFAOYSA-N 0.000 claims description 2
- AUNGANRZJHBGPY-UHFFFAOYSA-N D-Lyxoflavin Natural products OCC(O)C(O)C(O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-UHFFFAOYSA-N 0.000 claims description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 2
- OVBPIULPVIDEAO-UHFFFAOYSA-N N-Pteroyl-L-glutaminsaeure Natural products C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)NC(CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-UHFFFAOYSA-N 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 claims description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 2
- 229960002685 biotin Drugs 0.000 claims description 2
- 235000020958 biotin Nutrition 0.000 claims description 2
- 239000011616 biotin Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 claims description 2
- 229960000304 folic acid Drugs 0.000 claims description 2
- 235000019152 folic acid Nutrition 0.000 claims description 2
- 239000011724 folic acid Substances 0.000 claims description 2
- 239000008103 glucose Substances 0.000 claims description 2
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 2
- 229940055726 pantothenic acid Drugs 0.000 claims description 2
- 235000019161 pantothenic acid Nutrition 0.000 claims description 2
- 239000011713 pantothenic acid Substances 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims description 2
- ZUFQODAHGAHPFQ-UHFFFAOYSA-N pyridoxine hydrochloride Chemical compound Cl.CC1=NC=C(CO)C(CO)=C1O ZUFQODAHGAHPFQ-UHFFFAOYSA-N 0.000 claims description 2
- 229960004172 pyridoxine hydrochloride Drugs 0.000 claims description 2
- 235000019171 pyridoxine hydrochloride Nutrition 0.000 claims description 2
- 239000011764 pyridoxine hydrochloride Substances 0.000 claims description 2
- 229960002477 riboflavin Drugs 0.000 claims description 2
- 235000019192 riboflavin Nutrition 0.000 claims description 2
- 239000002151 riboflavin Substances 0.000 claims description 2
- 230000003009 desulfurizing effect Effects 0.000 claims 6
- 229930003779 Vitamin B12 Natural products 0.000 claims 1
- FDJOLVPMNUYSCM-WZHZPDAFSA-L cobalt(3+);[(2r,3s,4r,5s)-5-(5,6-dimethylbenzimidazol-1-yl)-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl] [(2r)-1-[3-[(1r,2r,3r,4z,7s,9z,12s,13s,14z,17s,18s,19r)-2,13,18-tris(2-amino-2-oxoethyl)-7,12,17-tris(3-amino-3-oxopropyl)-3,5,8,8,13,15,18,19-octamethyl-2 Chemical compound [Co+3].N#[C-].N([C@@H]([C@]1(C)[N-]\C([C@H]([C@@]1(CC(N)=O)C)CCC(N)=O)=C(\C)/C1=N/C([C@H]([C@@]1(CC(N)=O)C)CCC(N)=O)=C\C1=N\C([C@H](C1(C)C)CCC(N)=O)=C/1C)[C@@H]2CC(N)=O)=C\1[C@]2(C)CCC(=O)NC[C@@H](C)OP([O-])(=O)O[C@H]1[C@@H](O)[C@@H](N2C3=CC(C)=C(C)C=C3N=C2)O[C@@H]1CO FDJOLVPMNUYSCM-WZHZPDAFSA-L 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 claims 1
- 235000019163 vitamin B12 Nutrition 0.000 claims 1
- 239000011715 vitamin B12 Substances 0.000 claims 1
- 229910002651 NO3 Inorganic materials 0.000 abstract description 7
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 7
- 239000010842 industrial wastewater Substances 0.000 abstract description 4
- 150000003568 thioethers Chemical class 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 12
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000813 microbial effect Effects 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000004317 sodium nitrate Substances 0.000 description 5
- 235000010344 sodium nitrate Nutrition 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- FDJOLVPMNUYSCM-UVKKECPRSA-L cobalt(3+);[(2r,3s,4r,5s)-5-(5,6-dimethylbenzimidazol-1-yl)-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl] [(2r)-1-[3-[(2r,3r,4z,7s,9z,12s,13s,14z,17s,18s,19r)-2,13,18-tris(2-amino-2-oxoethyl)-7,12,17-tris(3-amino-3-oxopropyl)-3,5,8,8,13,15,18,19-octamethyl-2,7, Chemical compound [Co+3].N#[C-].C1([C@H](CC(N)=O)[C@@]2(C)CCC(=O)NC[C@@H](C)OP([O-])(=O)O[C@H]3[C@H]([C@H](O[C@@H]3CO)N3C4=CC(C)=C(C)C=C4N=C3)O)[N-]\C2=C(C)/C([C@H](C\2(C)C)CCC(N)=O)=N/C/2=C\C([C@H]([C@@]/2(CC(N)=O)C)CCC(N)=O)=N\C\2=C(C)/C2=N[C@]1(C)[C@@](C)(CC(N)=O)[C@@H]2CCC(N)=O FDJOLVPMNUYSCM-UVKKECPRSA-L 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- OOSZCNKVJAVHJI-UHFFFAOYSA-N 1-[(4-fluorophenyl)methyl]piperazine Chemical compound C1=CC(F)=CC=C1CN1CCNCC1 OOSZCNKVJAVHJI-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- MNZHBXZOPHQGMD-UHFFFAOYSA-N acetic acid;azane Chemical compound N.CC(O)=O.CC(O)=O.CC(O)=O MNZHBXZOPHQGMD-UHFFFAOYSA-N 0.000 description 2
- 229940054333 biotin 2 mg Drugs 0.000 description 2
- QKSIFUGZHOUETI-UHFFFAOYSA-N copper;azane Chemical compound N.N.N.N.[Cu+2] QKSIFUGZHOUETI-UHFFFAOYSA-N 0.000 description 2
- DGLRDKLJZLEJCY-UHFFFAOYSA-L disodium hydrogenphosphate dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O DGLRDKLJZLEJCY-UHFFFAOYSA-L 0.000 description 2
- 229940000252 folic acid 2 mg Drugs 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 229940089807 pantothenic acid 5 mg Drugs 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229940089808 pyridoxine hydrochloride 10 mg Drugs 0.000 description 2
- 229940047034 riboflavin 5 mg Drugs 0.000 description 2
- 229940074545 sodium dihydrogen phosphate dihydrate Drugs 0.000 description 2
- ZGHLCBJZQLNUAZ-UHFFFAOYSA-N sodium sulfide nonahydrate Chemical compound O.O.O.O.O.O.O.O.O.[Na+].[Na+].[S-2] ZGHLCBJZQLNUAZ-UHFFFAOYSA-N 0.000 description 2
- 150000003722 vitamin derivatives Chemical class 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052945 inorganic sulfide Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229940079101 sodium sulfide Drugs 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000001360 synchronised effect Effects 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
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/345—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for biological oxidation or reduction of sulfur compounds
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
-
- 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
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/18—Removal of treatment agents after treatment
-
- C—CHEMISTRY; METALLURGY
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Abstract
本发明公开了一种基于C‑S耦合强化废水脱硫脱氮的方法,属于工业废水处理技术领域,方法包括以下步骤:(1)将硫自养反硝化污泥或硫自养反硝化菌液加入到反应容器中,再加入培养液;(2)将待处理废水加入到上述反应容器中,并使反应容器内体系初始S/C/N比范围为0.8~1.6:0.25~0.75:1,控制反应容器内处在无氧或缺氧环境下,持续搅拌进行反硝化反应实现废水的脱硫脱氮;本发明方法实现了硫自养反硝化与异养反硝化的耦合,大大降低了出水硝酸盐浓度,提高总氮的去除效率,降低了硫化物对细菌的毒害作用,处理效率高,出水水质好。
Description
技术领域
本发明涉及工业废水处理技术领域,具体涉及一种基于C-S耦合强化废水脱硫脱氮的方法。
背景技术
随着社会生活的发展,城市生活污水、工农业废水的排放量增加,废水的处理不仅关乎环境保护,也影响产业的可持续发展。农业施肥、养殖废水排放、工业废水排放等人类活动以及植物、生物、地质等自然因素都可能导致水体中的硝酸盐含量增加,水体中的硝酸盐含量增加会导致水质富营养化、对生态系统以及人类健康造成严重影响。
因此,水体环境中硝氮污染的治理已经变得愈发关键和重要,生物脱氮技术因具有经济实用性好、脱氮效果好的优点,一直被认为是可行性最高的脱氮技术,其主要分为异养反硝化技术和自养反硝化技术两种。
异养反硝化技术指异养反硝化菌在厌氧条件下进行反硝化作用,利用有机物将亚硝酸根或硝酸根还原为氮气的过程,反硝化速率快,但是存在过程繁琐、条件控制严格的缺点,如果废水中可生物利用的有机碳源不足,采用该技术时往往需要额外补充有机碳源,这导致了废水处理成本的增加。
硫自养反硝化技术是自养反硝化技术中的一种,一般是指在缺氧环境中硫氧化细菌(SOB)利用S2-、S0、S2O3 2-、S4O6 2-或SO3 2-等还原性无机硫化物作为电子供体并将亚硝酸根或硝酸根还原为氮气的过程,反应的最终产物为硫酸根和氮气。该技术能够同时进行氮和硫的去除,适用于地下水和工业废水处理等。但是在硫自养反硝化反应中,大量OH-被消耗,使反应体系为酸性,影响微生物活性;这个过程产生大量的硫酸根,导致水体被二次污染;且自养反应菌生长速率慢导致工程应用上水力停留时间长从而影响脱氮效率。
公开号为CN113735377A的中国专利文献公开了一种耦合硫离子除铜和脱氮的铜氨络废水处理方法,该发明针对铜氨络废水中的铜和氮难以有效地协同去除的问题,对所述废水依次进行沉淀处理和脱氮处理;脱氮处理是对沉淀处理的出水依次进行短程硝化反硝化处理、厌氧氨氧化、硫自养短程反硝化和硫自养反硝化处理。该发明具有铜和氮协同去除的效果,且还可以解决废水处理过程中硫化物引起的二次污染。
公开号为CN103373759A的中国专利文献公开了一种FCC催化剂生产废水的脱氮方法,该发明方法以污水处理厂活性污泥作为微生物载体,在活性污泥浓度低于5000mg/L条件下投加硝化细菌,当系统内亚硝酸盐氮占总硝化产物的50%以上时投加反硝化菌剂,通过直接投加硝化细菌和反硝化菌剂,强化污泥中微生物的优化组合,改变脱氮微生物的群体地位,能实现同一反应器内氨氮、总氮和CODcr的脱除,废水处理效果好。
但是上述方法采用多步反硝化脱除过程或者将多种菌剂复配使用,较为繁琐,因此需要开发一种基于C-S耦合强化废水脱硫脱氮的工艺技术。
发明内容
本发明提供了一种基于C-S耦合强化废水脱硫脱氮的方法,该方法利用硫自养反硝化菌的自养反硝化和异养反硝化来进行生物脱氮脱硫,无需添加大量碳源,即可满足异养反硝化过程的需要,并促进硫化物氧化速率进一步强化自养反硝化的过程,对废水处理效果好。
具体采用的技术方案如下:
一种基于C-S耦合强化废水脱硫脱氮的方法,包括以下步骤:
(1)将硫自养反硝化污泥或硫自养反硝化菌液加入到反应容器中,再加入培养液;
(2)将待处理废水加入到上述反应容器中,并使反应容器内体系初始S/C/N比范围为0.8~1.6:0.25~0.75:1,控制反应容器内处在无氧或缺氧环境下,持续搅拌进行反硝化反应实现废水的脱硫脱氮(S/C/N比为质量浓度之比,其中,S为负二价硫,C为有机碳,N为硝态氮)。
优选的,所述的待处理废水中含有硝氮,硝氮浓度≤50ppm,pH值为7~8。
优选的,步骤(2)中,将待处理废水加入到上述反应容器中,再继续向待处理废水中注入硫化物和有机碳源,以使反应容器内体系初始S/C/N比范围为0.8~1.6:0.25~0.75:1。
进一步优选的,所述的硫化物为九水合硫化钠,所述的有机碳源包括乙酸钠或葡萄糖。
本发明方法中,硫自养反硝化菌利用硫化物作为电子供体对废水进行反硝化脱氮脱硫处理,其产生的单质硫会与硫化物结合形成多硫化物,进而提高生物硫的可利用性,因为有机碳源的加入进一步强化了这一步骤,利用硫自养反硝化与异养反硝化耦合体系实现对污水的同步高效脱硫脱氮;具体反应方程如下:
CH3COO-+4S0+2H2O→2CO2+4HS-+3H+
优选的,步骤(1)中,所述的培养液包括磷酸盐、维生素和矿物质,用于保证硫自养反硝化菌的正常生长。
进一步优选的,所述的磷酸盐包括磷酸氢盐和磷酸二氢盐;所述的维生素包括盐酸吡哆辛、生物素、核黄素、叶酸、泛酸、烟酸、硫铵、对氨基甲苯酸、硫辛酸或维生素B12;所述的矿物质包括硫酸镁、氨三乙酸、氯化钠、一水合硫酸锰、氯化锌、二水合氯化钙、六水合氯化钴、七水合硫酸亚铁、二水合钨酸钠、钼酸钠、六水合氯化镍、五水合硫酸铜、明矾或硼酸。
优选的,所述的硫自养反硝化污泥的投料量与废水处理量之比为15wt%~25wt%;所述的硫自养反硝化菌液体积占待处理废水体积的4%~20%。
优选的,控制反应容器内处在无氧或缺氧环境的方法为吹扫氮气,排除溶液体系中的氧气。
优选的,搅拌过程中保持转速为300~600rpm,反硝化反应过程中持续搅拌以保证硫自养反硝化污泥或硫自养反硝化菌与废水充分混匀。
优选的,反硝化反应的时长为12~144h。
与现有技术相比,本发明的有益效果在于:
(1)本发明方法实现了硫自养反硝化与异养反硝化的耦合,通过硫自养反硝化菌的自养反硝化和异养反硝化来脱除废水中的硝氮或硫,总氮的去除效率比单独自养反硝化方法和单独异养反硝化方法更高,能够大大降低出水的硝酸盐浓度,具有1+1>2的技术效果,且降低了硫化物对细菌的毒害作用;
(2)本发明方法对于废水中硫化物去除率达到100%,总氮去除率达到76%-100%,处理效率高,出水水质好。
附图说明
图1是对比例1-3中硫自养反硝化菌在不同S/N下的脱氮效果图。
图2是实施例1-3中硫自养反硝化菌在不同S/C/N下的脱氮效果图。
图3是对比例4-6中硫自养反硝化菌在不同C/N下的脱氮效果图。
图4是对比例1-3中硫自养反硝化菌在不同S/N下的进出水S2-及SO4 2-浓度统计结果图。
图5是实施例1-3中硫自养反硝化菌在不同S/C/N下的进出水S2-及SO4 2-浓度统计结果图。
蓝色虚线用于区分不同的S/N比或S/C/N比或C/N比。
具体实施方式
下面结合实施例与附图,进一步阐明本发明。应理解,这些实施例仅用于说明本发明,而不用于限制本发明的范围。
硫自养反硝化菌的培养:硫自养反硝化菌从厌氧污泥中富集,将取自巨化集团污水厂厌氧生物滤池中的2L厌氧污泥接种于8L的全混流反应器中,加入微生物营养液,微生物培养液的溶剂为去离子水,组成包括:硝酸钠1.2g/L,九水合硫化钠2.13g/L,二水合磷酸二氢钠2.77g/L,十二水合磷酸氢二钠11.63g/L,维他命溶液10mL/L(盐酸吡哆辛10mg·L-1,生物素2mg·L-1,核黄素5mg·L-1,叶酸2mg·L-1,泛酸5mg·L-1,烟酸5mg·L-1,硫铵5mg·L-1,对氨基甲苯酸5mg·L-1,硫辛酸5mg·L-1,维生素B120.1 mg·L-1)和矿物质溶液25mL/L(硫酸镁3mg·L-1,氨三乙酸1.5mg·L-1,氯化钠1mg·L-1,一水合硫酸锰0.5mg·L-1,氯化锌0.13mg·L-1,二水合氯化钙0.1mg·L-1,六水合氯化钴0.1mg·L-1,七水合硫酸亚铁0.1mg·L-1,二水合钨酸钠0.025mg·L-1,钼酸钠0.025mg·L-1,六水合氯化镍0.024mg·L-1,五水合硫酸铜0.01mg·L-1,明矾0.01mg·L-1,硼酸0.01mg·L-1)。控制微生物营养液中NO3 --N按200mg/L的浓度,硫化物浓度按照S/N=1.42配置,每天检测硫化物、硝氮、亚硝氮的变化。当检测NO3 --N浓度接近0mg/L时,置换营养液重新投料,重复一个周期。待体系能够稳定脱除溶液中的NO3 --N即可视为硫自养反硝化菌筛选驯化富集成功。
实施例1
本实施例以硝酸钠和硫化钠的混合溶液为模拟待处理废水,以乙酸钠为有机碳源;添加驯化的硫自养反硝化菌,探究其硫自养反硝化与异养反硝化的污水脱硫脱氮效果。
(1)将700mL硫自养反硝化菌液离心,去除上清液后加入到反应容器中,再加入培养液至3.5L,在培养液中,二水合磷酸二氢钠的浓度为2.77g/L,十二水合磷酸氢二钠的浓度为11.63g/L,维他命溶液10mL/L(盐酸吡哆辛10mg·L-1,生物素2mg·L-1,核黄素5mg·L-1,叶酸2mg·L-1,泛酸5mg·L-1,烟酸5mg·L-1,硫铵5mg·L-1,对氨基甲苯酸5mg·L-1,硫辛酸5mg·L-1,维生素B12 0.1mg·L-1),矿物质溶液25mL/L(硫酸镁3mg·L-1,氨三乙酸1.5mg·L-1,氯化钠1mg·L-1,一水合硫酸锰0.5mg·L-1,氯化锌0.13mg·L-1,二水合氯化钙0.1mg·L-1,六水合氯化钴0.1mg·L-1,七水合硫酸亚铁0.1mg·L-1,二水合钨酸钠0.025mg·L-1,钼酸钠0.025mg·L-1,六水合氯化镍0.024mg·L-1,五水合硫酸铜0.01mg·L-1,明矾0.01mg·L-1,硼酸0.01mg·L-1)。
(2)将硝酸钠和九水合硫化钠加入到上述反应容器中模拟待处理废水,加入硝酸钠和九水合硫化钠后,反应体系中的硝氮浓度为50ppm,S/N比为1.6:1,pH约为7.3,向反应容器中通入氮气以除氧气,控制反应容器内处在无氧环境下,再加入有机碳源乙酸钠,加入乙酸钠后,S/C/N比范围为1.6:0.25:1,加盖密封放入27℃恒温室中进行反硝化反应,每12h检测反应器中硫化物、硝氮、亚硝氮的变化,考察本发明方法脱硫脱氮的效果。
实施例2
本实施例与实施例1中的方法区别仅在于,加入乙酸钠后,S/C/N比范围为1.6:0.5:1。
实施例3
本实施例与实施例1中的方法区别仅在于,加入乙酸钠后,S/C/N比范围为1.6:0.75:1。
对比例1-3
本实施例与实施例1中的方法区别仅在于,加入硝酸钠和九水合硫化钠后,反应体系中的硝氮浓度为50ppm,S/N比为0.8:1,1.2:1和1.6:1,同时不加入有机碳源乙酸钠。在上述条件下,硫自养反硝化菌仅进行自养反硝化过程。
对比例4-6
本实施例与实施例1中的方法区别仅在于,不加入九水合硫化钠,并且加入乙酸钠后,保证C/N比范围为0.25:1,0.5:1和0.75:1。在上述条件下,反硝化菌仅进行异养反硝化过程。
样品分析
由图1可以得出,对比例1-3在S/N分别为0.8:1,1.2:1和1.6:1的体系中,总氮去除率分别为19.33±2.21%、37.43±1.22%和58.34±1.61%。
由图2可以得出,实施例1-3在S/C/N分别为1.6:0.25:1、1.6:0.5:1和1.6:0.75:1的体系中,总氮去除率分别为76.14±3.42%、90.87±0.28%和100%。
由图3可以得出,对比例4-6在C/N分别为0.25:1,0.5:1和0.75:1的体系中,总氮去除率分别为7.35±1.98%、10.95±3.13%和23.24±3.10%。
由图1、图2和图3可知,在同等条件下,实施例1-3的硫自养反硝化菌的自养反硝化和异养反硝化的混养体系由于C/S耦合作用加强总氮去除速率,促进了脱氮效果,效果较对比例1-6更好。
由图4可以得出,在S/N为1.6的体系中,硫化物氧化速率分别为61.3mg/(L·d)。
由图5可以得出,在S/C/N分别为1.6:0.25:1、1.6:0.5:1和1.6:0.75:1的体系中,硫化物氧化速率分别为85.73mg/(L·d)、111.4mg/(L·d)和133.8mg/(L·d)。
由图4和图5可知,逐渐提高有机碳源浓度促进了硫化物氧化速率,降低了出水硫酸根浓度,说明有机碳源的增加促进了反硝化过程中脱硫效果。
以上所述的实施例对本发明的技术方案进行了详细说明,应理解的是以上所述的仅为本发明的具体实施例,并不用于限制本发明,凡在本发明的原则范围内所做的任何修改、补充或类似方式替代等,均应包含在本发明的保护范围之内。
Claims (9)
1.一种基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,包括以下步骤:
(1)将硫自养反硝化污泥或硫自养反硝化菌液加入到反应容器中,再加入培养液;
(2)将待处理废水加入到上述反应容器中,并使反应容器内体系初始S/C/N比范围为0.8~1.6:0.25~0.75:1,控制反应容器内处在无氧或缺氧环境下,持续搅拌进行反硝化反应实现废水的脱硫脱氮。
2.根据权利要求1所述的基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,所述的待处理废水中含有硝氮,硝氮浓度≤50ppm,pH值为7~8。
3.根据权利要求1所述的基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,步骤(2)中,将待处理废水加入到上述反应容器中,再继续向待处理废水中注入硫化物和有机碳源,以使反应容器内体系初始S/C/N比范围为0.8~1.6:0.25~0.75:1。
4.根据权利要求3所述的基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,所述的硫化物为九水合硫化钠,所述的有机碳源包括乙酸钠或葡萄糖。
5.根据权利要求1所述的基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,步骤(1)中,所述的培养液包括磷酸盐、维生素和矿物质;所述的磷酸盐包括磷酸氢盐和磷酸二氢盐;所述的维生素包括盐酸吡哆辛、生物素、核黄素、叶酸、泛酸、烟酸、硫铵、对氨基甲苯酸、硫辛酸或维生素B12;所述的矿物质包括硫酸镁、氨三乙酸、氯化钠、一水合硫酸锰、氯化锌、二水合氯化钙、六水合氯化钴、七水合硫酸亚铁、二水合钨酸钠、钼酸钠、六水合氯化镍、五水合硫酸铜、明矾或硼酸。
6.根据权利要求1所述的基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,所述的硫自养反硝化污泥的投料量与废水处理量之比为15wt%~25wt%;和/或,所述的硫自养反硝化菌液体积占待处理废水体积的4%~20%。
7.根据权利要求1所述的基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,控制反应容器内处在无氧或缺氧环境的方法为吹扫氮气。
8.根据权利要求1所述的基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,搅拌过程中保持转速为300~600rpm。
9.根据权利要求1所述的基于C-S耦合强化废水脱硫脱氮的方法,其特征在于,反硝化反应的时长为12~144h。
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