CN115448550A - Treatment method for enhancing biological denitrification of sewage - Google Patents
Treatment method for enhancing biological denitrification of sewage Download PDFInfo
- Publication number
- CN115448550A CN115448550A CN202211295073.9A CN202211295073A CN115448550A CN 115448550 A CN115448550 A CN 115448550A CN 202211295073 A CN202211295073 A CN 202211295073A CN 115448550 A CN115448550 A CN 115448550A
- Authority
- CN
- China
- Prior art keywords
- tank
- pva
- sewage
- multiphase polymer
- denitrification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 58
- 239000010865 sewage Substances 0.000 title claims abstract description 37
- 230000002708 enhancing effect Effects 0.000 title claims description 15
- 239000000945 filler Substances 0.000 claims abstract description 71
- 229920000642 polymer Polymers 0.000 claims abstract description 55
- 230000008569 process Effects 0.000 claims abstract description 26
- 239000000701 coagulant Substances 0.000 claims abstract description 21
- 238000004062 sedimentation Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 238000005189 flocculation Methods 0.000 claims abstract description 7
- 230000016615 flocculation Effects 0.000 claims abstract description 7
- 238000005273 aeration Methods 0.000 claims abstract description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 4
- 230000003197 catalytic effect Effects 0.000 claims abstract description 3
- QZBGOTVBHYKUDS-UHFFFAOYSA-N 5-amino-1,2-dihydropyrazol-3-one Chemical compound NC1=CC(=O)NN1 QZBGOTVBHYKUDS-UHFFFAOYSA-N 0.000 claims description 15
- 239000002351 wastewater Substances 0.000 claims description 8
- 238000004065 wastewater treatment Methods 0.000 claims description 3
- 229920000620 organic polymer Polymers 0.000 claims description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 abstract description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 22
- 235000010413 sodium alginate Nutrition 0.000 abstract description 15
- 229940005550 sodium alginate Drugs 0.000 abstract description 15
- 239000000661 sodium alginate Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 11
- NWLUZGJDEZBBRH-UHFFFAOYSA-N 2-(propan-2-yloxymethyl)oxirane Chemical compound CC(C)OCC1CO1 NWLUZGJDEZBBRH-UHFFFAOYSA-N 0.000 abstract description 9
- 238000005728 strengthening Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000007670 refining Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 32
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 12
- 239000010802 sludge Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 8
- 244000005700 microbiome Species 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 229940014800 succinic anhydride Drugs 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- FPQQSJJWHUJYPU-UHFFFAOYSA-N 3-(dimethylamino)propyliminomethylidene-ethylazanium;chloride Chemical compound Cl.CCN=C=NCCCN(C)C FPQQSJJWHUJYPU-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- NQTADLQHYWFPDB-UHFFFAOYSA-N N-Hydroxysuccinimide Chemical compound ON1C(=O)CCC1=O NQTADLQHYWFPDB-UHFFFAOYSA-N 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- 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 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- MXZRMHIULZDAKC-UHFFFAOYSA-L ammonium magnesium phosphate Chemical compound [NH4+].[Mg+2].[O-]P([O-])([O-])=O MXZRMHIULZDAKC-UHFFFAOYSA-L 0.000 description 1
- 230000032770 biofilm formation Effects 0.000 description 1
- 230000036782 biological activation Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000021523 carboxylation Effects 0.000 description 1
- 238000006473 carboxylation reaction Methods 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002993 sponge (artificial) Substances 0.000 description 1
- 229910052567 struvite Inorganic materials 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
- C08B37/0084—Guluromannuronans, e.g. alginic acid, i.e. D-mannuronic acid and D-guluronic acid units linked with alternating alpha- and beta-1,4-glycosidic bonds; Derivatives thereof, e.g. alginates
-
- 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
- C02F1/54—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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2303/04—Disinfection
-
- 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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
-
- 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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a treatment method for strengthening biological nitrogen removal of sewage, and relates to the technical field of environmental protection sewage treatment. The method comprises refining sewageGrid, equalizing basin, reaction tank, preliminary sedimentation tank and improvement type A 2 Performing process treatment on an O tank, a secondary sedimentation tank, a flocculation tank, a final sedimentation tank, a denitrification filter tank, an ozone catalytic oxidation tank, an aeration biological filter tank, a disinfection tank and a discharge port to obtain effluent reaching the standard of quasi IV; in addition, in the treatment process, the 3-amino-5-hydroxypyrazole modified PVA multiphase polymer is used as a filler, and the sodium alginate modified by isopropyl glycidyl ether is used as a coagulant aid, so that the biological denitrification effect in the sewage is further improved.
Description
Technical Field
The invention belongs to the technical field of environmental protection sewage treatment, and particularly relates to a treatment method for enhancing biological denitrification of sewage.
Background
Nitrogen is one of the important reasons for causing water eutrophication, at present, the water eutrophication caused by nitrogen pollution is striking, and the key for solving the problem of the current surface water environment eutrophication is the reduction and control of nitrogen load in the water treatment process.
The domestic and foreign water treatment denitrification technology is mainly divided into two major types, namely a biological method and a physical and chemical method, wherein the physical and chemical method comprises a breakpoint chlorination method, an air stripping method, a magnesium ammonium phosphate precipitation method, a selective ion exchange method and the like, but the physical and chemical method has great limitation in practical engineering application due to the problems of high equipment investment, high energy consumption, complex management and the like. The biological denitrification technology is a process of converting ammonia nitrogen and organic nitrogen in wastewater into gaseous nitrogen by using microorganisms and discharging the gaseous nitrogen into the atmosphere or assimilating the gaseous nitrogen by the microorganisms, and has the advantages of low price, easy treatment of secondary pollutants and the like. Therefore, the biological denitrification technology is still the mainstream of the domestic and foreign wastewater denitrification technology at present and is an economically excellent treatment technology. According to the invention, PVA multiphase polymer filler is suspended in the aerobic tank and is used for improving the biological denitrification capability; and 3-amino-5-hydroxypyrazole is adopted to modify the PVA multiphase polymer filler in the treatment process, so that the biological denitrification capability is further improved.
Disclosure of Invention
The invention aims to provide a treatment method for enhancing biological denitrification of sewage, and NH in effluent obtained by the treatment method 3 The concentration of-N and TN is obviously superior to the requirement of discharge standard, and the effluent quality is stable.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a treatment method for enhancing biological denitrification of sewage comprises the following steps: sewage is processed by a fine grid, an adjusting tank, a reaction tank, a primary sedimentation tank and an improved type A 2 The process combination can completely meet the sewage treatment target, so that the finally treated effluent reaches the quasi-IV standard; the above-mentioned improvement A 2 O pool adopts improved type A 2 O process; the above-mentioned improved type A 2 The O process comprises anaerobic, anoxic and aerobic processes; adding modified PVA multiphase polymer filler or PVA multiphase polymer filler in the aerobic process; the modified PVA multiphase polymer filler is obtained by modifying PVA multiphase polymer filler by 3-amino-5-hydroxypyrazole.
The invention adopts an improved type A in a biological sewage denitrification biochemical system 2 In the O process, pollutants firstly decompose macromolecular organic matters which are difficult to degrade into micromolecular organic matters which are easy to degrade in an anaerobic state, then the micromolecular organic matters enter an anoxic-aerobic process, are oxidized and decomposed into carbon dioxide and water by microorganisms under the condition of higher dissolved oxygen to realize the degradation of the pollutants, ammonia nitrogen is converted into nitrate nitrogen through nitrification, mixed liquid in an aerobic tank flows back to an anoxic tank, and denitrification is realized under the action of denitrifying bacteria. In order to strengthen the biochemical treatment capacity, PVA multiphase polymer filler is added into the aerobic tank to increase the microbial concentration and improve the biological denitrification capacity.
Specifically, NH in the effluent 3 The N removal rate is more than or equal to 94.5 percent; preferably, NH is contained in the effluent 3 the-N removal rate is more than or equal to 97.7 percent.
Specifically, the TN removal rate of the effluent is more than or equal to 85.2 percent; preferably, the removal rate of TN in the effluent is more than or equal to 90.6 percent.
In particular, modification A 2 And (3) feeding the biochemical effluent of the O tank into a secondary sedimentation tank for solid-liquid separation, feeding the effluent into a flocculation tank, refluxing the precipitated sludge into a regulating tank and an anaerobic tank, and feeding the residual sludge into a sludge concentration tank.
Specifically, according to the total phosphorus concentration of the effluent of the secondary sedimentation tank, a coagulant and a coagulant aid are added into a flocculation tank to further remove phosphorus-containing substances in the wastewater, the flocculated effluent enters a final sedimentation tank, the effluent enters a denitrification filter tank, an ozone oxidation tank and an aeration biological filter tank in sequence after being precipitated by inclined pipes, and the precipitated sludge enters a sludge concentration tank.
Specifically, the denitrification filter tank, the ozone oxidation tank and the aeration biological filter tank are used as effluent TN and COD Cr The standard-reaching guarantee measures are selected to be started according to the running condition; the effluent of the aeration biological filter enters a disinfection tank and is discharged after reaching the standard after being disinfected.
Specifically, biochemical excess sludge enters a regulating tank and is discharged through a primary sedimentation tank, sludge in the primary sedimentation tank and sludge in a final sedimentation tank enter a sludge concentration tank, are lifted by a pump after being concentrated and enter a sludge conditioning tank, are pressed and dehydrated by a high-pressure diaphragm box type filter press after being added with medicine and modified, and dry sludge after being dehydrated is transported and treated.
The invention also discloses a preparation method of the modified PVA multiphase polymer filler, which comprises the steps of adopting succinic anhydride to carry out carboxylation on PVA in the PVA multiphase polymer filler, and then carrying out amide reaction with 3-amino-5-hydroxypyrazole to prepare the modified PVA multiphase polymer filler.
According to the invention, hydroxyl in 3-amino-5-hydroxypyrazole is introduced to a PVA side chain, so that the damage to a PVA multiphase polymer filler hydrogen bond is reduced, the regular structure of a PVA molecular chain is changed, the crystallinity of the PVA molecular chain is reduced, the stability of the PVA multiphase polymer filler is improved, the entanglement among the molecular chains is increased after modification, the pores on the surface of the PVA multiphase polymer filler are increased, and the denitrification effect of the PVA multiphase polymer filler in sewage treatment is further improved.
Specifically, the preparation method of the modified PVA multiphase polymer filler comprises the following steps:
soaking the PVA multiphase polymer filler into an ethanol solution (with the concentration of 8-10 wt%) containing succinic anhydride and triethylamine, carrying out surface crosslinking reaction for 5-6h, taking out, washing with acetone, then soaking into an ethanol solution (with the concentration of 8-10 wt%) of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride, N-hydroxysuccinimide and 3-amino-5-hydroxypyrazole, carrying out reaction for 5-6h, taking out, washing with acetone, and drying to obtain the modified PVA multiphase polymer filler.
For the invention, the mass ratio of PVA to succinic anhydride is 1.1-0.15; the mass ratio of PVA to triethylamine is 1.02-0.03; the molar ratio of PVA to 3-amino-5-hydroxypyrazole is 1; the molar ratio of the 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride to the 3-amino-5-hydroxypyrazole is 1; the mass ratio of the N-hydroxysuccinimide to the 3-amino-5-hydroxypyrazole is 1.
For the purposes of the present invention, the abovementioned PVA multiphase polymer filler is a PVA multiphase polymer acetal sponge.
The PVA multiphase polymer biological filler is a multiphase polymer sponge body and is in a strip-shaped suspension type, and the PVA multiphase polymer acetal sponge body is a reactor which is made of a material with hydrophilicity, biotophilicity, an inert framework, high strength, wear resistance, weather resistance, chemical resistance, rough surface, three-dimensional porosity, positive charge, huge specific surface area and total volume.
For the purposes of the present invention, the abovementioned PVA multiphase polymer fillers comprise the following advantages:
(1) Large specific surface area: 20000-35000 m 2 /m 3 (ii) a (2) high porosity: the porosity is more than 95 percent; (3) the volume load is high; (4) good in biological affinity: the filler is added with nano mineral micro powder beneficial to cells and a bacterium activation factor (rare earth alloy micro powder is chemically activated and cross-linked with a hydrophilic parent organism high-strength sponge), can release far infrared rays after biological activation treatment, has enhanced flora activity and strong hunger sensation, is suitable for the bionic aquatic weed strip shape for the growth of a microbial system, and is very suitable for the micro environment of microbial growth biofilm formation and phycomycete symbiosis; (5) good hydrophilicity: the filler takes a PVA material as a framework, the filler carrier material contains a large number of high-activity hydroxyl groups, and the hydrophilic groups have obvious effects; (6) no blockage in operation: the filler is prepared by chemically crosslinking a plurality of high polymer materials mainly comprising high-strength hydrophilic PVA resin, has hydrophilicity and hydrophilicity, can be quickly changed into a soft latticed sponge body after being combined with water, obviously enhances the flexibility, and ensures that the filler does not block after long-time operation; (7) convenient installation and disassembly: the suspension type installation mode is simple and convenient to be a semi-fluidized bed process: has the advantages of a fluidized bed and a semi-fluidized bed and abandons the disadvantages of the fluidized bed and the semi-fluidized bed; (8) the energy-saving effect is good: the semi-fluidized bed process has high bubble cutting ability, and is hydrophilic and biologicalThe reactor is accumulated, the utilization rate of dissolved oxygen is increased, and the energy conservation of a sewage treatment plant is very obvious; (9) long service life: the filler has the characteristics of friction resistance, acid and alkali resistance, blockage prevention, easy cleaning, high strength, convenient disassembly and assembly and the like, and the service life can reach more than 10 years.
The PVA multiphase polymer biological filler is used as an efficient microorganism carrier, so that a large amount of microorganisms are attached and fixed on the filler, the filler is in a uniform S-shaped bent shape in water, and under the water-hydraulic driving shearing, the left-right and up-down swinging range of the filler is about one meter, a semi-fluidization contact oxidation mode is formed, the biomass is greatly improved, and the updating of a biological membrane on the filler is strengthened.
For the invention, the suspension amount of the PVA multiphase polymer biological filler only accounts for 5-10% of the effective volume of the aerobic tank, which indicates that the filler input-output ratio is excellent.
For the present invention, the installation mode of PVA multiphase polymer biological filler includes water installation and waterless installation. The installation with water adopts the suspension type mounting means, need not to cut off the water and shut down, will be curtain slice form filler both ends and be fixed in the pool wall, and the form of drying in the air perpendicularly is laid in biochemical pond sewage, and this mounting means does benefit to system maintenance in the future (the installation is demolishd swiftly). The waterless installation can select a fixed installation mode and a suspension installation mode.
For the invention, the application range of the PVA multiphase polymer biological filler comprises various sections in biochemical treatment such as extension and new construction, upgrading and modification, strengthening treatment and the like of a town sewage treatment plant. Besides effectively strengthening the degradation of organic pollutants and removing nitrogen and phosphorus, the method also aims at strengthening the treatment of harmful substances such as heavy metals, chlorides, phenols and the like in a biochemical system.
In the present invention, a coagulant and a coagulant aid are added to the flocculation tank.
In the present invention, the coagulant includes an organic polymer coagulant.
For the invention, the addition amount of the coagulant is 1-8mg/L.
According to the invention, the mass ratio of the coagulant to the coagulant aid is 1.3-0.35.
For the purposes of the present invention, the above-mentioned coagulant aid comprises modified sodium alginate.
The invention also discloses a preparation method of the modified sodium alginate, which comprises the following steps: isopropyl glycidyl ether and sodium alginate are subjected to alcoholic hydroxyl crosslinking reaction to prepare the modified sodium alginate.
According to the invention, isopropyl glycidyl ether and hydroxyl in sodium alginate are subjected to crosslinking reaction, molecules are connected through ether bonds, so that macromolecular chains are increased, the molecular mass is increased, the intermolecular acting force is enhanced, the ether bonds generated after crosslinking and the residual hydroxyl in the molecules can form hydrogen bonds, the intermolecular acting force is further enhanced, the molecules or chain segments are wound more tightly, and the coagulant aid has a better effect in sewage treatment.
Specifically, the preparation method of the modified sodium alginate comprises the following steps:
adding water (the preparation concentration is 2.5-3.5 wt%) into sodium alginate, stirring and mixing, adding a sodium hydroxide solution with the concentration of 2-2.5wt%, adjusting the pH value to 8-9, then slowly adding isopropyl glycidyl ether, reacting at 50-65 ℃ for 1.5-2h, cooling to room temperature after completion, adding hydrochloric acid with the concentration of 2.5-3wt% for neutralization, then adding absolute ethyl alcohol until floccule appears and the solution is completely water-shaped, centrifuging and drying to obtain the modified sodium alginate.
For the invention, the mass ratio of the sodium alginate to the isopropyl glycidyl ether is 1.
The beneficial effects of the invention include:
the PVA multiphase polymer biological filler is suspended in an aerobic tank in the sewage treatment process, so that a large amount of microorganisms are attached and fixed on the filler to form a semi-fluidized contact oxidation mode, the biomass grown on the surface of the material is 10-20 times of that of the traditional activated sludge method, and the microorganisms are firmly combined with a carrier, are not easy to fall off and run off, are not easy to block and have high-load biomass, thereby ensuring the high efficiency and stability of removing pollutants in a biological fluidized bed reaction tank. As the filler is made of hydrophilic and biological materials, in the operation process, the interior and the exterior of the filler can really form dissolved oxygen gradient, and macromolecular organic matters which are difficult to degrade in water can be converted into micromolecular organic matters, so that the combined action of ammonia oxidation, nitrification and denitrification can be simultaneously carried out in the same reactor, and the efficient removal of ammonia nitrogen and total nitrogen is powerfully ensured. The ammonia nitrogen nitrification and denitrification process has two processes of partial nitrification and denitrification and full nitrification and denitrification, and after the PVA multiphase polymer biological filler is added, synchronous nitrification and denitrification and partial nitrification and denitrification exist simultaneously, so that the carbon source and the alkalinity are saved. The short-range simultaneous nitrification and denitrification biological nitrogen removal process has a series of advantages of the simultaneous biological nitrogen removal process, and has higher denitrification rate compared with the whole-range nitrification and denitrification process, and the nitrification stage can reduce about 25 percent of oxygen supply. In addition, the biochemical system is added with the PVA multiphase polymer biological filler with the cellular sponge body structure which has huge specific surface area, hydrophilicity and biothilicity and can be quickly changed into soft and obviously enhanced flexibility after the filler is combined with water, so that the microbial mass in the biochemical system is huge, the biochemical system is more impact-resistant and the effluent is more stable.
Therefore, the invention provides a treatment method for enhancing biological denitrification of sewage, and NH in effluent obtained by the treatment method 3 The concentration of-N and TN is obviously superior to the requirement of discharge standard, and the effluent quality is stable.
Drawings
FIG. 1 is an appearance view of a PVA multiphase polymer filler;
FIG. 2 is a microscopic 50-fold magnification of a PVA multiphase polymer filler;
FIG. 3 is a 500-fold microscopic view of a PVA multiphase polymer filler;
FIG. 4 is a 5000-fold microscopic image of a PVA multiphase polymer filler under a microscope;
FIG. 5 is a 5000-fold microscopic view of a modified PVA multiphase polymer filler;
FIG. 6 is an infrared spectrogram test result of modified sodium alginate and sodium alginate.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:
the PVA multiphase polymer filler used in this example was purchased from the environmental protection market and had the appearance shown in FIG. 1 and the microscopic magnifications shown in FIGS. 2, 3 and 4:
the enlargement shows that the filler can reach the grade of hundreds of nano pores, is full of hydroxyl hydrophilic functional groups, and is not easy to block due to the pore wall customization technology; the surface of the glass is fully distributed with 1-3 mm small holes through 50-magnification observation under a microscope, and the glass has good roughness, and is beneficial to filtering nitrobacteria and pollutants which are required to be purified by overflowing. After the magnification of 500 times, the pore wall surface has countless pore diameters of 50-100 microns. After the microscope is amplified by 5000 times, the wall of the hole is covered with countless pore diameters of hundreds of nanometers to a few micrometers, which is extremely suitable for purifying the living and the reproduction of bacteria.
Specific properties of the PVA heterophasic polymer filler are shown in table 1.
TABLE 1 Filler Properties List
Example 1:
the design influent water quality data is shown in table 2.
TABLE 2 Sewage plant influent Water quality List (mg/L except pH)
| Index of water quality | pH | COD Cr | BOD 5 | NH 3 -N | TN | TP | SS |
| Content value | 7 | 380 | 160 | 25.5 | 40.5 | 3.5 | 125 |
Aiming at the sewage treatment method, a thin grating → an adjusting tank → a primary sedimentation tank → an improved A is adopted 2 The process comprises the steps of adding PVA multiphase polymer biological filler in an O tank → a secondary sedimentation tank → a flocculation final sedimentation tank (adding 3mg/L coagulant polyacrylamide and 1mg/L coagulant aid sodium alginate), → a denitrification filter tank → an ozone catalytic oxidation tank → an aeration biological filter tank → a disinfection tank → a discharge port.
The quality data of the treated effluent is shown in Table 3.
TABLE 3 effluent quality List for Sewage plant (except pH, mg/L)
| Index of water quality | pH | COD | BOD 5 | NH 3 -N | TN | TP | SS |
| Content value | 6.8 | 15.5 | 1.5 | 1.4 | 6 | 0.15 | 1.2 |
As shown in the water quality effects before and after treatment in tables 2 and 3, PVA multiphase polymer filler is suspended in the aerobic tank, so that the aerobic tank has good biological denitrification capability. NH of the effluent 3 The concentration of-N and TN is obviously reduced.
According to the data in tables 2-3: feed water NH 3 N concentration 25.5mg/L, effluent NH 3 N concentration 1.4mg/L, NH 3 The removal rate of-N is more than or equal to 94.5% (removal rate/% = [ (pre-removal-post-removal)/pre-removal)]X 100%); the inlet water TN concentration is 40.5mg/L, the outlet water TN concentration is 6mg/L, the TN removal rate is more than or equal to 85.2 percent, and the outlet water quality is stable.
Example 2:
the difference between the treatment method for enhancing the biological denitrification of the sewage and the embodiment 1 is as follows: the modified PVA multiphase polymer filler is adopted to replace the PVA multiphase polymer filler.
A method for preparing a modified PVA heterophasic polymer filler comprising the steps of:
soaking the PVA multiphase polymer filler into an ethanol solution (with the concentration of 10 wt%) containing succinic anhydride and triethylamine, carrying out surface crosslinking reaction for 5 hours, taking out, washing with acetone, then soaking into an ethanol solution (with the concentration of 10 wt%) of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride, N-hydroxysuccinimide and 3-amino-5-hydroxypyrazole, carrying out reaction for 5 hours, taking out, washing with acetone, and drying to obtain the modified PVA multiphase polymer filler; wherein the mass ratio of PVA to succinic anhydride is 1; the mass ratio of PVA to triethylamine is 1; the molar ratio of PVA to 3-amino-5-hydroxypyrazole is 1; the molar ratio of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride to 3-amino-5-hydroxypyrazole is 1; the mass ratio of the N-hydroxysuccinimide to the 3-amino-5-hydroxypyrazole is 1.
The 5000-fold enlargement under the microscope of the modified PVA multiphase polymer filler is shown in FIG. 5, and compared with the 5000-fold enlargement under the microscope of the PVA multiphase polymer filler in FIG. 4, the modified PVA multiphase polymer filler has obviously increased porosity, which shows that the modified PVA multiphase polymer filler has better filtering effect on sewage.
The water quality data of the treated effluent are shown in a table 4.
TABLE 4 effluent quality List for Sewage plant (mg/L except pH)
| Index of water quality | pH | COD | BOD 5 | NH 3 -N | TN | TP | SS |
| Content value | 7 | 12.9 | 1.0 | 1.0 | 5.3 | 0.13 | 0.8 |
The NH was obtained by comparing the inlet water quality data of the sewage plant in example 2 with that of the sewage plant in example 1 3 The N removal rate is more than or equal to 96.1 percent, and the TN removal rate is more than or equal to 86.9 percent; compared with the effluent quality data in the embodiment 1, the effluent quality in the embodiment 2 is improved; the PVA multiphase polymer filler modified by 3-amino-5-hydroxypyrazole has good denitrification effect when used for sewage treatment.
Example 3:
the difference between the treatment method for enhancing the biological denitrification of the sewage and the embodiment 1 is as follows: modified sodium alginate is used to replace sodium alginate.
The preparation method of the modified sodium alginate comprises the following steps:
adding water (the preparation concentration is 2.5 wt%) into sodium alginate, stirring and mixing, adding a sodium hydroxide solution with the concentration of 2wt%, adjusting the pH value to 8, then slowly adding isopropyl glycidyl ether (the mass ratio of the sodium alginate to the isopropyl glycidyl ether is 1.8), reacting at 50 ℃ for 1.5h, cooling to room temperature after completion, adding hydrochloric acid with the concentration of 2.5wt% for neutralization, then adding absolute ethyl alcohol until floccule appears and the solution is completely water-shaped, centrifuging and drying to prepare the modified sodium alginate.
The infrared spectrum test of the modified sodium alginate and the sodium alginate is shown in figure 6. As can be seen from FIG. 6, the protein was compared with sodium alginateThe infrared spectrum of the modified sodium alginate is 2964cm -1 In the presence of-CH 3 Has an infrared characteristic absorption peak of 2926cm -1 In the presence of-CH 2 The infrared characteristic absorption peak of the sodium alginate shows that the isopropyl glycidyl ether participates in the generation reaction of the modified sodium alginate.
The water quality data of the treated effluent is shown in Table 5.
TABLE 5 effluent quality List for Sewage plant (mg/L except pH)
| Index of water quality | pH | COD | BOD 5 | NH 3 -N | TN | TP | SS |
| Emission standard | 6~9 | 40 | 6 | 2 | 12 | 0.3 | 10 |
| Content value | 6.5 | 13.5 | 0.9 | 1.1 | 5.5 | 0~0.24 | 0.8 |
The NH was obtained by comparing the feed water quality data of the sewage treatment plant in example 3 with that of example 1 3 the-N removal rate is more than 95.7 percent, and the TN removal rate is more than 86.4 percent; compared with the effluent quality data in the embodiment 1, the effluent quality in the embodiment 3 is improved; illustrated by the isopropyl groupThe sodium alginate modified by glycidyl ether has good denitrification effect when used for sewage treatment.
Example 4:
the difference between the treatment method for enhancing the biological denitrification of the sewage and the embodiment 2 is as follows: modified sodium alginate is used to replace sodium alginate.
The water quality data of the treated effluent is shown in Table 6.
TABLE 6 effluent quality List for Sewage plant (except pH, mg/L)
| Index of water quality | pH | COD | BOD 5 | NH 3 -N | TN | TP | SS |
| Emission standard | 6~9 | 40 | 6 | 2 | 12 | 0.3 | 10 |
| Content value | 6.7 | 11.2 | 0.5 | 0.58 | 3.8 | 0.1 | 0.5 |
Comparison of example 4 with the wastewater treatment plant influent Water quality data of example 1, NH 3 The N removal rate is more than or equal to 97.7 percent, and the TN removal rate is more than or equal to 90.6 percent; compared with the effluent quality data of the embodiment 1, the embodiment 2 and the embodiment 3, the effluent quality data of the embodiment 4 can be seenThe effluent quality is obviously improved; the PVA multiphase polymer filler modified by 3-amino-5-hydroxypyrazole and the sodium alginate modified by isopropyl glycidyl ether are used for sewage treatment at the same time, and the excellent denitrification effect is achieved.
Conventional techniques in the above embodiments are known to those skilled in the art, and therefore, will not be described in detail herein.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A treatment method for enhancing biological denitrification of sewage comprises the following steps: sewage is processed by a fine grid, an adjusting tank, a reaction tank, a primary sedimentation tank and an improved type A 2 The O tank, the secondary sedimentation tank, the flocculation tank, the final sedimentation tank, the denitrification filter tank, the ozone catalytic oxidation tank, the aeration biological filter tank, the disinfection tank and the discharge port ensure that the treated effluent reaches the standard of quasi IV class;
characterized in that the improved structure A 2 O pool adopts improved type A 2 O process; the modified form A 2 The O process comprises anaerobic, anoxic and aerobic processes; adding modified PVA multiphase polymer filler or PVA multiphase polymer filler in the aerobic process; the modified PVA multiphase polymer filler is obtained by modifying PVA multiphase polymer filler by 3-amino-5-hydroxypyrazole.
2. The method for enhancing biological denitrification of wastewater as set forth in claim 1, wherein: NH in the effluent 3 the-N removal rate is more than or equal to 94.5 percent.
3. The method for enhancing biological denitrification of wastewater as set forth in claim 1, wherein: the TN removal rate in the effluent is more than or equal to 85.2 percent.
4. The method for enhancing biological denitrification of wastewater according to claim 1, wherein: the PVA multiphase polymer filler has a porosity of more than 95%.
5. The method for enhancing biological denitrification of wastewater as set forth in claim 1, wherein: coagulant and coagulant aid are added into the flocculation tank.
6. The method for enhancing biological denitrification of wastewater according to claim 5, wherein: the coagulant comprises an organic polymer coagulant.
7. The method of claim 5, wherein the biological denitrification of wastewater treatment comprises: the addition amount of the coagulant is 1-8mg/L.
8. The method of claim 5, wherein the biological denitrification of wastewater treatment comprises: the mass ratio of the coagulant to the coagulant aid is 1.3-0.35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211295073.9A CN115448550B (en) | 2022-10-21 | 2022-10-21 | Treatment method for strengthening biological denitrification of sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211295073.9A CN115448550B (en) | 2022-10-21 | 2022-10-21 | Treatment method for strengthening biological denitrification of sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115448550A true CN115448550A (en) | 2022-12-09 |
| CN115448550B CN115448550B (en) | 2024-04-16 |
Family
ID=84310609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211295073.9A Active CN115448550B (en) | 2022-10-21 | 2022-10-21 | Treatment method for strengthening biological denitrification of sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115448550B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018571A (en) * | 2004-09-08 | 2007-08-15 | 考里安国际公司 | Method of preparing polymeric adhesive compositions utilizing the mechanism of interaction between the polymer components |
| CN102786710A (en) * | 2011-05-14 | 2012-11-21 | 纪群 | Method for preparing bio-carrier by porous foam polymer modification |
| CN108264202A (en) * | 2018-03-30 | 2018-07-10 | 安徽华骐环保科技股份有限公司 | A kind of process for town sewage treatment up to standard to IV class water of surface water |
| CN110054349A (en) * | 2019-04-16 | 2019-07-26 | 杭州恒美环保设备有限公司 | A kind of economical dyeing waste water denitrogenation processing system |
| CN113563631A (en) * | 2021-07-29 | 2021-10-29 | 湖南欧威爱特新材料科技有限公司 | Acetalized polyvinyl alcohol MBBR biological filler and preparation method thereof |
-
2022
- 2022-10-21 CN CN202211295073.9A patent/CN115448550B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018571A (en) * | 2004-09-08 | 2007-08-15 | 考里安国际公司 | Method of preparing polymeric adhesive compositions utilizing the mechanism of interaction between the polymer components |
| CN102786710A (en) * | 2011-05-14 | 2012-11-21 | 纪群 | Method for preparing bio-carrier by porous foam polymer modification |
| CN108264202A (en) * | 2018-03-30 | 2018-07-10 | 安徽华骐环保科技股份有限公司 | A kind of process for town sewage treatment up to standard to IV class water of surface water |
| CN110054349A (en) * | 2019-04-16 | 2019-07-26 | 杭州恒美环保设备有限公司 | A kind of economical dyeing waste water denitrogenation processing system |
| CN113563631A (en) * | 2021-07-29 | 2021-10-29 | 湖南欧威爱特新材料科技有限公司 | Acetalized polyvinyl alcohol MBBR biological filler and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115448550B (en) | 2024-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108996808B (en) | Biochemical combined treatment process and equipment for degradation-resistant concentrated water in steel industry | |
| CN101148293A (en) | Microorganism advanced treatment for oil refining waste water | |
| CN100554195C (en) | A kind of waste water treatment process and purposes to high-ammonia nitrogen low C/N ratio | |
| CN113307456A (en) | Improved sewage treatment method and device for MBBR (moving bed biofilm reactor) process | |
| CN111422976A (en) | Process for treating high ammonia nitrogen wastewater by using moving bed biofilm reactor | |
| CN106517699B (en) | Efficient domestic garbage sewage system and process thereof | |
| CN1300020C (en) | Domestic sewage deeply treating process | |
| CN111018101A (en) | Membrane biofilm culture domestication process and membrane biofilm reaction device for treating high-salinity wastewater | |
| CN107487841B (en) | Wastewater treatment process integrating denitrification, coupling phosphorus removal and anaerobic ammonia oxidation | |
| WO2007000942A1 (en) | Method for treatment of ammonia-containing wastewater | |
| CN214735172U (en) | Wastewater treatment device and wastewater treatment system | |
| CN115448550B (en) | Treatment method for strengthening biological denitrification of sewage | |
| CN217809103U (en) | MABR integrated sewage treatment process and system with multiple water inlets and outlets | |
| CN212222737U (en) | Pesticide effluent treatment plant | |
| CN115321743A (en) | Method for treating garbage leachate of transfer station | |
| CN211546257U (en) | Highly integrated improved A/A/O-MBR integrated sewage treatment device | |
| CN112723566A (en) | BAF aeration pipe and method for removing COD through BAF denitrification | |
| CN111499102A (en) | Step purification process for complex organic sewage | |
| CN1179893C (en) | Fixed-microbe seawage-treatment technology | |
| CN113636717B (en) | Purification treatment method for cultivation tail water | |
| CN111499101B (en) | Organic sewage step purifier | |
| CN110759601B (en) | Multipurpose carbon fiber production wastewater treatment system and method | |
| CN217351071U (en) | Improved sewage treatment device for MBBR (moving bed biofilm reactor) process | |
| Zhang et al. | Application of aerobic granular sludge in polishing the UASB effluent | |
| CN115108629B (en) | Advanced sewage treatment method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |