CN107055971B - A kind of recycling processing method of city domestic sewage - Google Patents
A kind of recycling processing method of city domestic sewage Download PDFInfo
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- CN107055971B CN107055971B CN201710412129.7A CN201710412129A CN107055971B CN 107055971 B CN107055971 B CN 107055971B CN 201710412129 A CN201710412129 A CN 201710412129A CN 107055971 B CN107055971 B CN 107055971B
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- 239000010865 sewage Substances 0.000 title claims abstract description 52
- 238000004064 recycling Methods 0.000 title claims abstract description 15
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000002351 wastewater Substances 0.000 claims abstract description 67
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003337 fertilizer Substances 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000010412 laundry washing Methods 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 210000002700 urine Anatomy 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 51
- 239000010802 sludge Substances 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 35
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims description 29
- 239000007789 gas Substances 0.000 claims description 23
- 238000004062 sedimentation Methods 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 17
- 238000001556 precipitation Methods 0.000 claims description 16
- 238000005189 flocculation Methods 0.000 claims description 15
- 230000016615 flocculation Effects 0.000 claims description 15
- 239000011573 trace mineral Substances 0.000 claims description 15
- 235000013619 trace mineral Nutrition 0.000 claims description 15
- 229910019142 PO4 Inorganic materials 0.000 claims description 14
- 239000010452 phosphate Substances 0.000 claims description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 239000006228 supernatant Substances 0.000 claims description 14
- 238000005273 aeration Methods 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 12
- 238000001471 micro-filtration Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- 244000025254 Cannabis sativa Species 0.000 claims description 10
- 229910052796 boron Inorganic materials 0.000 claims description 9
- 239000004519 grease Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
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- 238000010438 heat treatment Methods 0.000 claims description 7
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002054 inoculum Substances 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 4
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 4
- 229940010552 ammonium molybdate Drugs 0.000 claims description 4
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 4
- 239000011609 ammonium molybdate Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 239000004021 humic acid Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229920002521 macromolecule Polymers 0.000 claims description 4
- 235000021049 nutrient content Nutrition 0.000 claims description 4
- 239000004323 potassium nitrate Substances 0.000 claims description 4
- 235000010333 potassium nitrate Nutrition 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 235000013877 carbamide Nutrition 0.000 claims 1
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- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 9
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- 239000005431 greenhouse gas Substances 0.000 abstract description 5
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- 239000003643 water by type Substances 0.000 description 3
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- 235000010149 Brassica rapa subsp chinensis Nutrition 0.000 description 2
- 235000000536 Brassica rapa subsp pekinensis Nutrition 0.000 description 2
- 241000499436 Brassica rapa subsp. pekinensis Species 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
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- 230000008859 change Effects 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
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- 239000010908 plant waste Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
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- 150000003722 vitamin derivatives Chemical class 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 239000010786 composite waste Substances 0.000 description 1
- SEGLCEQVOFDUPX-UHFFFAOYSA-N di-(2-ethylhexyl)phosphoric acid Chemical compound CCCCC(CC)COP(O)(=O)OCC(CC)CCCC SEGLCEQVOFDUPX-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 235000016709 nutrition Nutrition 0.000 description 1
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- 150000003016 phosphoric acids Chemical class 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
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- 239000010902 straw Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000010792 warming 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus 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
-
- 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
-
- 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
-
- 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
- C02F3/28—Anaerobic digestion processes
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Y02W10/20—Sludge processing
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of recycling processing method of city domestic sewage, it is on the basis of original domestic sewage treatment device, by the way that cook waste water, laundry washing waste water and stool and urine effluent segregation of kitchen is handled；Waste water is cooked in kitchen and laundry washing waste water pass through biochemical treatment, the progress biofermentation processing of stool and urine waste water.Stool and urine waste water is handled to the added value for becoming useful high biogas, organic fertilizer and breeding bait by methane fermentation, the recycling treatment of waste water is realized, produces considerable economic benefit, reduce greenhouse gas emission, reduce sewage operating cost；Kitchen is cooked and handled with water and laundry washing waste water by the biochemical processing process reconstructed on the basis of original sewage treatment process, effluent quality is more preferable, reduces processing cost, recycles water resource；The water soluble fertilizer for using biogas slurry to prepare can provide comprehensive nutrient for plant, and fertilizer dissolubility is good, is easy to absorb.
Description
Technical field：
The invention belongs to water-treatment technology field, and in particular to a kind of recycling processing method of city domestic sewage, lead to
Cross to cook in traditional kitchen and handled with water, laundry washing waste water and stool and urine effluent segregation, reduce greenhouse gas emission；Reduce
Useless processing cost, produces considerable economic benefit.
Background technology：
City domestic sewage is cooked with water, laundry washing waste water and stool and urine waste water, existing handling process including kitchen
Three kinds of waste water are usually discharged into municipal sewage plant by same pipe network, then discharges or returns after being handled by sewage treatment plant
With.On-site inspection Qingdao City excrement floss hole and pipe network move towards situation and find there are two pipelines in corridor, and one is lavatory pipe
Road, excrement and urine water and washes are together discharged into sewage conduct herein；Another is kitchen waste water pipeline.This two sewage pipes
Road finally imports same sewage network, and being then discharged into different sewage treatment plants according to region burst is handled.For this kind of waste water,
Sewage treatment plant typically uses the processing modes such as physical treatment+biochemical treatment+sterilization, such as：Grid+precipitation+OAMSAO techniques+
Coagulating sedimentation+chlorination, grid+precipitation+A/A/O techniques+MBBR+ flocculations+filtering+ultraviolet disinfection etc..Existing processing method
Problems be present：1st, organic matter influent COD after present human excrement and urine's waste water mixes with washes, kitchen oily waste waterCr
Concentration is generally 500-900mg/L, and its solution content of organics is low, and water is big, typically passes through discharge or reuse after processing.Examine
Consider Inlet and outlet water water quality, occupation of land and investment etc., the removal to organic matter uses the life of " anaerobism/and oxygen+aerobic+nitrification/denitrification "
Thing handling process.It is that the organic matter in sewage is resolved into inorganic matter CO in biological treatment2、NH3、CH4、H2S、H2O、N2、NO3 -
Etc. form, because treatment facility uses open type, CO therein2、NH3、CH4、H2S、N2Air is discharged into Deng a gas part again
In, resource is so not only wasted, also add CO in air2、CH4、NH3Content.CO2With heat absorption, heat insulating function, it is
The main reason for greenhouse effects of air, global warming.If night soil waste water separately through the method for methane fermentation at
Reason, in methane backeria fermentation stage CO2、H2It is the matrix of synthesizing methane, its CO2、H2For changing into clean energy resource " CH4", and
In closed container will not to environmental emission, so as to reduce greenhouse gas emission, other organic matters are combined in organic fertilizer, can
Produce direct economic benefit (only Qingdao City) annual 17.15 hundred million；2nd, sanitary sewage is mixed now and post-processed, be often only Qingdao City
To increase handling to reach 0.08 hundred million yuan (in terms of the people of Qingdao City 9,000,000) more, so cause processing cost high, efficiency utilization rate is low
Phenomenon；3rd, chemical composition is different in night soil and washes, the higher suitable biochemical treatment of organic concentration in excrement, and washes
The phosphate in waste water is washed, surfactant isoconcentration height is to have negative effect to biochemical treatment, can suppress biochemical effects, unfavorable
In biochemical process；4th, after excrement and washes together discharge, processing procedure has added many flocculants in coagulating sedimentation to be made
Harmful substance contents increase, nutritional ingredient are few in sludge, it is difficult to individually do Fertilizer application, cause sludge packing phenomenon.
The content of the invention：
It is an object of the invention to overcome the shortcomings of the prior art, seek a kind of classification processing of city domestic sewage
Method, existing greenhouse gas emission is high during solving existing sanitary sewage disposal；The wasting of resources；High energy consumption；Produce solid
The problems such as body discarded object.
To achieve these goals, the recycling processing method of a kind of city domestic sewage of the present invention, including with
Lower step：
(1) by kitchen cook waste water and laundry washing waste water sewage is transported into the first urban pipe network by the first pipeline
Treatment plant's setting pot；Stool and urine waste water is transported to the change excrement of sewage treatment plant by second pipe into the second urban pipe network 15
Chi Zhong；
(2) step (1) is transported to the laundry washing waste water of sewage treatment plant and waste water is cooked by setting pot removal in kitchen
Solid impurity, then enter regulating reservoir by two-stage grid, grid gap is 2mm, removes the suspension of big particle diameter, passes through regulation
Pond regulating water quality, water are then delivered to the grease being aerated in oil removing setting pot removal waste water, sandstone etc., are aerated oil removing setting pot
Water outlet enters preliminary sedimentation tank, and flocculant is added into preliminary sedimentation tank and removes portion phosphate and surfactant etc., preliminary sedimentation tank supernatant
Macromolecule organic, phosphate and the part nitrate in waste water are removed into AO reaction tanks, AO reaction tank water outlets are transported to
MBBR reaction tanks remove various organic matters, ammonia nitrogen, phosphate, and MBBR reaction tank water outlets are transported to flocculation inclined plate precipitation pond and add wadding
Solidifying agent removes remaining surfactant and inorganic salts, and AO reaction tanks and MBBR reaction tanks excess sludge enter second pond, and two is heavy
A sludge part in pond returns to the anaerobic pond of AO reaction tanks front end, and a part returns to MBBR reaction tanks, remaining to be transported to dirt
Concentrated in mud thickener, the water outlet of flocculation inclined plate precipitation pond filters filter by cloth, and cloth filter filter tank water outlet COD reduces by 97%
More than, total nitrogen reduces by more than 85%, and it is more than 98% that total phosphorus, which reduces by more than 98%, SS clearances,；Cloth filter filter tank water outlet is by purple
Outer chlorination equipment processing, water outlet reach《Urban reclaimed water water standard》(GB/T 18920-2002)；Effluent reuse is at sewage
The washing bay beside factory is managed, remaining water outlet can be used for road-cleaning, fire-fighting, urban afforestation, flushing toilets, construction miscellaneous
With urban reclaimed waters such as water；
(3) septic tank wastewater in step (1) is transported in dosing chamber, inoculum and straw is then added into dosing chamber
Stalk, auger type excrement grass seperator 18 is transported to after stirring and is handled, two-stage digester is entered back into and is fermented, caused cleaning
Energy methane gas is transported in gas-holder after dehydration desulfurizer processing, then methane gas is output into boiler by pipeline
End, generating set or/and gas user nearby use；
(4) methane gas obtained in step (3) is transported into boiler end to heat boiler, boiler inner vapor is defeated
The waste water in two-stage digester is heated in the heated shell on the outside of two-stage digester being sent in step (3), two-stage disappears
Change the temperature sensor in pond and detect in digester that temperature signal is transported to controller, during 50-55 DEG C of design temperature to be achieved,
Controller sends the magnetic valve that control signal control is closed on the heated shell connecting pipeline on the outside of boiler and two-stage digester, stops
Only heat, otherwise open boiler and magnetic valve；
(5) the residue small part after step (3) is fermented in two-stage digester end is as dilution water pump to dosing chamber
It is interior, to be enriched with strain in dosing chamber, while increase temperature；Remainder is transported in sludge concentration tank, sludge concentration tank supernatant
Raw material of the liquid as liquid fertilizer, excess sludge is transported in plate and frame filter together in sludge concentration tank carries out solid and liquid separation,
Solid matter is stored in storage tank after drying machine drying as the raw material of solid-state fertilizer；Original of the liquid as liquid fertilizer
Material.
Further, step (5) liquid is handled by aperture for the micro-filtration film device of 0.1-0.3 microns, removed
It is dense to be then delivered to progress vacuum in single-action lift film evaporator close to zero for solid suspension in water, micro-filtration delivery turbidity
Contracting, the biogas slurry that moisture content is 50-70% is obtained, biogas slurry is transported in liquid fertilizer reactor 29, adds urea, phosphoric acid thereto
Potassium dihydrogen, potassium nitrate, humic acid potassium and trace element, ensure nutrient content in solution：N+P2O5+K2O >=30g/L, trace element
>=4g/L, the trace element includes Fe, Mn, Zn, Cu, B and Mo, and Fe, Mn, Zn, Cu, B and Mo mass ratio are 4：2：2：
2：2：1, stirred under conditions of 40-55 DEG C, 200-400r/min, then stop heating and be cooled to room temperature, obtain water-soluble
Property fertilizer, the trace element is by adding EDTA-Fe, EDTA-Mn, EDTA-Zn, EDTA-Cu, ammonium molybdate and boric acid add.
Further, steam is pipelined to the heater in single-action lift film evaporator Nei to natural pond simultaneously in boiler
Liquid is heated, and then completes concentration.
The processing equipment for recycling of city domestic sewage of the present invention, including the first pipeline, second pipe, the first city
City's pipe network, the second urban pipe network, setting pot, two-stage grid, regulating reservoir, aeration oil removing setting pot, preliminary sedimentation tank, AO reaction tanks,
MBBR reaction tanks, second pond, flocculation inclined plate precipitation pond, cloth filter filter tank, apparatus for ultraviolet disinfection, sludge concentration tank, septic tank, match somebody with somebody
Material pond, auger type excrement grass seperator, two-stage digester, boiler, gas-holder, dehydration desulfurizer, plate and frame filter, drying
Machine, storage tank, micro-filtration, single-action lift film evaporator and liquid fertilizer reactor；First pipeline passes through the first urban pipe network and setting pot
Connection, setting pot are connected with two-stage grid, and two-stage grid is connected by regulating reservoir with aeration oil removing setting pot water inlet, and aeration removes
Oily setting pot delivery port is connected by pipeline with preliminary sedimentation tank water inlet, preliminary sedimentation tank supernatant outlet and the water inlet on AO reaction tanks top
Mouth connection, AO reaction tanks delivery port connect with MBBR reaction tank water inlets, and the excess sludge of AO reaction tanks and MBBR reaction tanks goes out
Mouthful connected by second pond with sludge concentration tank charging aperture, second pond by delivery pump respectively with AO reaction tanks front end anaerobic pond
Connect for sludge reflux, MBBR reaction tanks delivery port to be connected with flocculation inclined plate precipitation pond water inlet, wad a quilt with cotton with MBBR reaction tanks
Solidifying inclined-plate clarifying basin supernatant outlet connects with cloth filter filter tank water inlet, and cloth filter filter tank delivery port passes through with apparatus for ultraviolet disinfection
Pipeline communication；Second pipe is connected by the second urban pipe network with septic tank in sewage treatment plant, septic tank discharging opening and dispensing
Pond import connects, and sets charging aperture to be used to add inoculum and stalk on dosing chamber, dosing chamber outlet separates with auger type excrement grass
Machine import is connected, and the outlet of auger type excrement grass seperator is connected with two-stage digester, and the gas outlet that two-stage digester top is set leads to
Cross dehydration desulfurizer to connect with gas-holder, gas-holder gas outlet connects with boiler air inlet, and steam (vapor) outlet passes through pipe in boiler
The heater air inlet that road rises with the heated shell air inlet on the outside of two-stage digester and single effect evaporation in film device respectively connects
Logical, the heater delivery port that heated shell outlet and single effect evaporation on the outside of two-stage digester are risen in film device is cold with boiler
Condensate inlet communication, two-stage digester outlet at bottom are connected with sludge concentration tank charging aperture, sludge concentration tank sludge outlet and plate
Frame filtering machine inlet connection, the outlet of plate and frame filter biogas residue are connected with dryer feeding mouth, dryer discharging opening and storage
Groove connects, and the outlet of plate and frame filter biogas slurry and sludge concentration tank supernatant outlet pass through micro-filtration and single-action lift film evaporator
Inlet is connected, and single-action lift film evaporator discharging opening connects with liquid fertilizer reactor charging aperture, and two-stage digester bottom is set
One liquid outlet is connected with dosing chamber import.
The present invention compared with prior art, has advantages below：(1) to the kitchen waste water pipeline and lavatory in existing building
Pipeline carries out appropriate reconstruction, while increases urban pipe network all the way on the basis of existing urban pipe network, solves at the shunting of waste water
Reason problem, transformation is simple, convenient to carry out；(2) stool and urine waste water handled to become useful added value high by methane fermentation
Biogas, organic fertilizer and breeding bait, the recycling treatment of waste water is realized, produce considerable economic benefit, reduce greenhouse gases row
Put, reduce sewage operating cost；(3) kitchen is cooked and passed through with water and laundry washing waste water in original sewage treatment process
On the basis of the biochemical processing process processing reconstructed, effluent quality is more preferable, reduces processing cost, recycles water resource；(4)
The water soluble fertilizer for using biogas slurry to prepare can provide comprehensive nutrient for plant, and fertilizer dissolubility is good, is easy to absorb.
Brief description of the drawings：
Fig. 1 is the recycling treatment process flowage structure schematic diagram of city domestic sewage of the present invention.
Embodiment：
With reference to embodiment, the present invention will be further described.
Embodiment 1：
A kind of recycling processing method for city domestic sewage that the present embodiment is related to, comprises the following steps：
(1) waste water is cooked into kitchen and laundry washing waste water enters the by the first pipeline 1 (original kitchen waste water pipeline)
One urban pipe network 2 (original urban pipe network) is transported to sewage treatment plant's setting pot 3；Stool and urine waste water is passed through into second pipe 14
(original closet pipe) is transported in the septic tank 16 of sewage treatment plant into the second urban pipe network 15；
(2) step (1) is transported to the laundry washing waste water of sewage treatment plant and kitchen waste water of cooking contains：Soap, grease,
Synthetic detergent, cleaning agent, virus and bacterium, protein, starch, sugar, cellulose, vitamin, inorganic salts and surfactant
Deng material.Wherein COD is 200-600mg/L, BOD 100-350mg/L, grease 120-400mg/L, total nitrogen 5-30mg/
L, total phosphorus 5-40mg/L, SS 300-550mg/L, (including laundry wash waste water, kitchen are cooked with existing city domestic sewage
Waste water and stool and urine waste water) to compare, phosphate and surface-active contents are high, and COD, total nitrogen concentration are relatively low.Laundry washing waste water
Waste water is cooked by the removal solid impurity of setting pot 3 with kitchen, then enters regulating reservoir 5 by two-stage grid 4, grid gap is
2mm, the suspension of big particle diameter is removed, being then delivered to aeration oil removing setting pot 6 by the regulating water quality of regulating reservoir 5, water removes
Grease, sandstone in waste water etc., the water outlet of aeration oil removing setting pot 6 enter preliminary sedimentation tank 7, flocculant are added into preliminary sedimentation tank 7 and is removed
Portion phosphate and surfactant etc., the supernatant of preliminary sedimentation tank 7 enter AO reaction tanks 8 remove waste water in macromolecule organic,
Phosphate and part nitrate etc., the water outlet of AO reaction tanks 8 are transported to MBBR reaction tanks 10 and remove various organic matters, ammonia nitrogen, phosphoric acid
Salt, the water outlet of MBBR reaction tanks 10, which is transported to flocculation inclined plate precipitation pond 11 and adds flocculant, removes remaining surfactant and inorganic
Salt, AO reaction tanks 8 and the excess sludge of MBBR reaction tanks 10 enter second pond 9, and the sludge part in second pond 9 returns to AO reactions
The anaerobic pond of the front end of pond 8, a part return to MBBR reaction tanks 10, and remaining be transported in sludge concentration tank 23 is concentrated, wadding
The solidifying water outlet of inclined-plate clarifying basin 11 is filtered filter tank 12 by cloth and filtered, and the cloth filter water outlet COD of filter tank 12 reduces by more than 97%, and total nitrogen reduces
More than 85%, it is more than 98% that total phosphorus, which reduces by more than 98%, SS clearances,；Ultra violet sterilizer 13 is passed through in the cloth filter water outlet of filter tank 12
Processing, water outlet reach《Urban reclaimed water water standard》(GB/T 18920-2002)；Effluent reuse is beside sewage treatment plant
Washing bay, remaining water outlet can be used for the cities such as road-cleaning, fire-fighting, urban afforestation, flushing toilets, construction miscellaneous water
Miscellaneous water；Laundry washing waste water and kitchen cook waste water composition composite waste pass through handling process：Two-stage grid+aeration removes
Oily setting pot+preliminary sedimentation tank+AO techniques+MBBR techniques+flocculation inclined plate precipitation+cloth filter filter tank+ultraviolet disinfection, is to utilize original life
Sewage treatment facility：The technique of grid+precipitation+A/A/O techniques+MBBR+ flocculations+filtering+ultraviolet disinfection carries out transformation and formed, by
Reduced in Determination of Total Nitrogen in Waste Water concentration, to denitrogenate dephosphorization existing with except based on carbon dephosphorization except the biochemical process of carbon is transform as by original,
Biochemical process supplemented by denitrogenating；Technique is simpler after reconstruction, and effluent quality is more preferable, and (effluent quality is from meeting original city life
Sewage drainage standard requirement living brings up to the requirement of reclaimed water standard)；
(3) waste water of septic tank 16 in step (1) is transported in dosing chamber 17, then adds inoculum into dosing chamber 17
And stalk, auger type excrement grass seperator 18 is transported to after stirring and is handled, two-stage digester 19 is entered back into and is fermented, is produced
Methane as clean energy source gas be transported to after dehydration desulfurizer 22 is handled in gas-holder 21, then methane gas is passed through into pipeline
The end of boiler 20, generating set or/and gas user nearby is output to use；
(4) methane gas obtained in step (3) is transported into boiler end to heat boiler 20, will be steamed in boiler 20
The waste water in two-stage digester 19 is added in the heated shell in the outside of two-stage digester 19 that gas is transported in step (3)
Heat, the temperature sensor in two-stage digester 19 detect that temperature signal is transported to controller, setting temperature to be achieved in digester
When spending 50-55 DEG C, controller sends the heated shell connecting pipeline that control signal control is closed on the outside of boiler and two-stage digester
On magnetic valve, stop heating, otherwise open boiler and magnetic valve；
(5) the residue small part after step (3) is fermented in the end of two-stage digester 19 is as dilution water pump to dispensing
In pond 17, to be enriched with strain in dosing chamber 17, while increase temperature；Remainder is transported in sludge concentration tank 23, and sludge is dense
Raw material of the supernatant of contracting pond 23 as liquid fertilizer, excess sludge is transported in plate and frame filter 24 together in sludge concentration tank 23
Solid and liquid separation is carried out, solid matter is stored in storage tank 26 after the drying of dryer 25 as the raw material of solid-state fertilizer；Liquid object
Raw material of the matter as liquid fertilizer.
Further, step (5) liquid is handled by aperture for the micro-filtration film device 27 of 0.1-0.3 microns, gone
Solid suspension in water removal, the delivery turbidity of micro-filtration 27 are then delivered in single-action lift film evaporator 28 and carried out close to zero
It is concentrated in vacuo, obtains the biogas slurry that moisture content is 50-70%, biogas slurry is transported in liquid fertilizer reactor 29, add urine thereto
Element, potassium dihydrogen phosphate, potassium nitrate, humic acid potassium and trace element, ensure nutrient content in solution：N+P2O5+K2O >=30g/L,
Trace element >=4g/L, the trace element include Fe, Mn, Zn, Cu, B and Mo, and Fe, Mn, Zn, Cu, B and Mo mass ratio
For 4：2：2：2：2：1, stirred under conditions of 40-55 DEG C, 200-400r/min, then stop heating and be cooled to room temperature,
Water soluble fertilizer is obtained, the trace element is by adding EDTA-Fe, EDTA-Mn, EDTA-Zn, EDTA-Cu, ammonium molybdate and boron
Acid adds.
Further, steam is pipelined in the heater in single-action lift film evaporator 28 simultaneously in boiler 20
Biogas slurry is heated, and then completes concentration.
As shown in figure 1, the processing equipment for recycling for the city domestic sewage that the present embodiment is related to, including the first pipeline 1,
Two pipelines 14, the first urban pipe network 2, the second urban pipe network 15, setting pot 3, two-stage grid 4, regulating reservoir 5, aeration oil removing sand setting
Pond 6, preliminary sedimentation tank 7, AO reaction tanks 8, MBBR reaction tanks 10, second pond 9, flocculation inclined plate precipitation pond 11, cloth filter filter tank 12, ultraviolet
Chlorination equipment 13, sludge concentration tank 23, septic tank 16, dosing chamber 17, auger type excrement grass seperator 18, two-stage digester 19, pot
Stove 20, gas-holder 21, dehydration desulfurizer 22, plate and frame filter 24, dryer 25, storage tank 26, micro-filtration 27, single-action rise film and steamed
Transmitting apparatus 28 and liquid fertilizer reactor 29；First pipeline 1 is connected by the first urban pipe network 2 with setting pot 3, setting pot 3 and two
Level grid 4 is connected, and two-stage grid 3 is connected by regulating reservoir 5 with the aeration water inlet of oil removing setting pot 6, and aeration oil removing setting pot 6 goes out
The mouth of a river is connected by pipeline with the water inlet of preliminary sedimentation tank 7, and the supernatant outlet of preliminary sedimentation tank 7 connects with the water inlet on the top of AO reaction tanks 8,
The delivery port of AO reaction tanks 8 connects with the water inlet of MBBR reaction tanks 10, the excess sludge outlet of AO reaction tanks 8 and MBBR reaction tanks 10
Connected by second pond 9 with the charging aperture of sludge concentration tank 23, second pond 9 is detested with the front end of AO reaction tanks 8 respectively by delivery pump
Oxygen pond connects with MBBR reaction tanks to be used for sludge reflux, the delivery port of MBBR reaction tanks 10 and the water inlet of flocculation inclined plate precipitation pond 11
Connection, the supernatant outlet of flocculation inclined plate precipitation pond 11 and cloth the filter water inlet of filter tank 12 connect, the cloth filter delivery port of filter tank 12 with it is ultraviolet
Line chlorination equipment 13 passes through pipeline communication；Second pipe 14 is connected by the second urban pipe network 15 with septic tank in sewage treatment plant 16
Connecing, the discharging opening of septic tank 16 is connected with the import of dosing chamber 17, sets charging aperture to be used to add inoculum and stalk on dosing chamber 17,
The outlet of dosing chamber 17 is connected with the import of auger type excrement grass seperator 18, the outlet of auger type excrement grass seperator 18 and two-stage digester 19
Connection, the gas outlet that the top of two-stage digester 19 is set are connected by being dehydrated desulfurizer 22 with gas-holder 21, and gas-holder 21 goes out
Gas port connects with the air inlet of boiler 20, and steam (vapor) outlet passes through the pipeline heating shell with the outside of two-stage digester 19 respectively in boiler 20
Body air inlet and single effect evaporation rise the heater air inlet connection in film device 28, the heated shell in the outside of two-stage digester 19
Outlet and single effect evaporation rise film device 28 in heater delivery port with the condensed water inlet communication of boiler 20, two-stage digester
19 outlet at bottoms are connected with the charging aperture of sludge concentration tank 23, the sludge outlet of sludge concentration tank 23 and the charging aperture of plate and frame filter 24
Connection, the outlet of the biogas residue of plate and frame filter 24 are connected with the charging aperture of dryer 25, and the discharging opening of dryer 25 is connected with storage tank 26, plate
The biogas slurry of frame filter 24 exports and the supernatant outlet of sludge concentration tank 23 passes through micro-filtration 27 and single-action lift film evaporator 28
Inlet connects, and the discharging opening of single-action lift film evaporator 28 connects with the charging aperture of liquid fertilizer reactor 29, the bottom of two-stage digester 19
Portion sets a liquid outlet to be connected with the import of dosing chamber 17.
Embodiment 2：
A kind of recycling processing method for city domestic sewage that the present embodiment is related to, comprises the following steps：
(1) waste water is cooked into kitchen and laundry washing waste water enters the by the first pipeline 1 (original kitchen waste water pipeline)
One urban pipe network 2 (original urban pipe network) is transported to sewage treatment plant's setting pot 3；Stool and urine waste water is passed through into second pipe 14
(original closet pipe) is transported in the septic tank 16 of sewage treatment plant into the second urban pipe network 15；
(2) step (1) is transported to the laundry washing waste water of sewage treatment plant and kitchen waste water of cooking contains：Soap, grease,
Synthetic detergent, cleaning agent, virus and bacterium, vegetable and animals oils, protein, starch, sugar, cellulose, vitamin, inorganic salts and table
The materials such as face activating agent.Wherein COD is 600mg/L, BOD 350mg/L, grease 400mg/L, total nitrogen 30mg/L, total phosphorus
For 40mg/L, SS 550mg/L, (including laundry wash waste water, kitchen are cooked waste water and stool and urine with existing city domestic sewage
Waste water) to compare, phosphate and surface-active contents are high, and COD, total nitrogen concentration are relatively low.Laundry washing waste water and kitchen are cooked useless
Water removes solid impurity by setting pot 3, then enters regulating reservoir 5 by two-stage grid 4, grid gap is 2mm, removes big grain
The suspension in footpath, by the regulating water quality of regulating reservoir 5, water be then delivered to aeration oil removing setting pot 6 remove grease in waste water,
Sandstone etc., the water outlet of aeration oil removing setting pot 6 enter preliminary sedimentation tank 7, flocculant are added into preliminary sedimentation tank 7 and removes portion phosphate and table
Face activating agent etc., macromolecule organic, phosphate and the part nitre that the supernatant of preliminary sedimentation tank 7 enters in the removal waste water of AO reaction tanks 8
Hydrochlorate etc., the water outlet of AO reaction tanks 8 are transported to MBBR reaction tanks 10 and remove various organic matters, ammonia nitrogen, phosphate, MBBR reaction tanks 10
Water outlet is transported to flocculation inclined plate precipitation pond 11 and adds the remaining surfactant of flocculant removal and inorganic salts, the He of AO reaction tanks 8
The excess sludge of MBBR reaction tanks 10 enters second pond 9, and the sludge part in second pond 9 returns to the anaerobism of the front end of AO reaction tanks 8
Pond, a part return to MBBR reaction tanks 10, and remaining be transported in sludge concentration tank 23 is concentrated, flocculation inclined plate precipitation pond 11
Water outlet is filtered filter tank 12 by cloth and filtered, and the cloth filter water outlet COD of filter tank 12 reduces by 98%, and total nitrogen reduces by 85%, and grease reduces by 99%, always
It is 98% that phosphorus, which reduces by 98%, SS clearances,；The cloth filter water outlet of filter tank 12 is handled by ultra violet sterilizer 13, and water outlet reaches《City
Miscellaneous water water standard》(GB/T 18920-2002)；Washing bay of the effluent reuse beside sewage treatment plant, remaining water outlet can
For urban reclaimed waters such as road-cleaning, fire-fighting, urban afforestation, flushing toilets, construction miscellaneous waters；
(3) waste water of septic tank 16 in step (1) is transported in dosing chamber 17, then adds inoculum into dosing chamber 17
And stalk, auger type excrement grass seperator 18 is transported to after stirring and is handled, two-stage digester 19 is entered back into and is fermented, is produced
Methane as clean energy source gas be transported to after dehydration desulfurizer 22 is handled in gas-holder 21, then methane gas is passed through into pipeline
The end of boiler 20, generating set or/and gas user nearby is output to use；
(4) methane gas obtained in step (3) is transported into boiler end to heat boiler 20, will be steamed in boiler 20
The waste water in two-stage digester 19 is added in the heated shell in the outside of two-stage digester 19 that gas is transported in step (3)
Heat, the temperature sensor in two-stage digester 19 detect that temperature signal is transported to controller, setting temperature to be achieved in digester
When spending 50-55 DEG C, controller sends the heated shell connecting pipeline that control signal control is closed on the outside of boiler and two-stage digester
On magnetic valve, stop heating, otherwise open boiler and magnetic valve；
(5) the residue small part after step (3) is fermented in the end of two-stage digester 19 is as dilution water pump into (3)
In dosing chamber 17, to be enriched with strain in dosing chamber 17, while increase temperature；Remainder is transported in sludge concentration tank 23, dirty
Raw material of the supernatant of mud thickener 23 as liquid fertilizer, excess sludge is transported to plate and frame filter together in sludge concentration tank 23
Solid and liquid separation is carried out in 24, solid matter is stored in storage tank 26 after the drying of dryer 25 as the raw material of solid-state fertilizer；Liquid
Raw material of the state material as liquid fertilizer.Steam is pipelined to adding in single-action lift film evaporator 28 simultaneously in boiler 20
Biogas slurry is heated in hot device, and then completes concentration.
(6) step (5) liquid is handled by aperture for the micro-filtration film device 27 of 0.1-0.3 microns, gone in water removal
Solid suspension, the delivery turbidity of micro-filtration 27 is then delivered in single-action lift film evaporator 28 that to carry out vacuum dense close to zero
Contracting, the biogas slurry that moisture content is 70% is obtained, biogas slurry is transported in liquid fertilizer reactor 29, adds urea, di(2-ethylhexyl)phosphate thereto
Hydrogen potassium, potassium nitrate, humic acid potassium and trace element, ensure nutrient content in solution：N+P2O5+K2O=30g/L, trace element=
4g/L, the trace element includes Fe, Mn, Zn, Cu, B and Mo, and Fe, Mn, Zn, Cu, B and Mo mass ratio are 4：2：2：2：
2：1, at 55 DEG C, stirred under conditions of 400r/min, then stop heating and be cooled to room temperature, obtain water soluble fertilizer, institute
State trace element and added by adding EDTA-Fe, EDTA-Mn, EDTA-Zn, EDTA-Cu, ammonium molybdate and boric acid.
Using Chinese cabbage seed as experiment material, prepared by liquid (biogas slurry) and step (6) that detecting step (5) obtains
The germination characteristic of water soluble fertilizer, specific experiment process are as follows：By in filter paper tiling culture dish, then Chinese cabbage seed is placed in respectively
On filter paper in individual culture dish, then liquid and water soluble fertilizer are added into each culture dish, it is incubated at 25 DEG C
24h, germination percentage is determined, is as a result shown：The germination percentage of liquid is used as 10% or so, using the germination percentage of water soluble fertilizer
For more than 96%.
Claims (3)
1. a kind of recycling processing method of city domestic sewage, it is characterised in that comprise the following steps：
(1) by kitchen cook waste water and laundry washing waste water sewage disposal is transported into the first urban pipe network by the first pipeline
Factory's setting pot；Stool and urine waste water is transported in the septic tank of sewage treatment plant by second pipe into the second urban pipe network；
(2) step (1) is transported to the laundry washing waste water of sewage treatment plant and waste water is cooked by setting pot removal solid in kitchen
Impurity, then enter regulating reservoir by two-stage grid, grid gap is 2mm, removes the suspension of big particle diameter, is adjusted by regulating reservoir
Water saving matter, water are then delivered to grease, sandstone in aeration oil removing setting pot removal waste water, and aeration oil removing setting pot water outlet is entered
Enter preliminary sedimentation tank, flocculant is added into preliminary sedimentation tank and removes portion phosphate and surfactant, it is anti-that preliminary sedimentation tank supernatant enters AO
Pond is answered to remove macromolecule organic, phosphate and part nitrate in waste water, AO reaction tank water outlets are transported to MBBR reaction tanks
Various organic matters, ammonia nitrogen, phosphate are removed, it is surplus that MBBR reaction tank water outlets are transported to flocculation inclined plate precipitation pond addition flocculant removal
Remaining surfactant and inorganic salts, AO reaction tanks and MBBR reaction tanks excess sludge enter second pond, the sludge in second pond
A part returns to the anaerobic pond of AO reaction tanks front end, and a part returns to MBBR reaction tanks, remaining to be transported in sludge concentration tank
Concentrated, the water outlet of flocculation inclined plate precipitation pond filters filter by cloth, and cloth filter filter tank water outlet COD reduces by more than 97%, total nitrogen
More than 85% is reduced, it is more than 98% that total phosphorus, which reduces by more than 98%, SS clearances,；Ultra violet sterilizer is passed through in cloth filter filter tank water outlet
Processing, water outlet reach《Urban reclaimed water water standard》(GB/T 18920-2002)；Effluent reuse is beside sewage treatment plant
Washing bay, remaining water outlet are used for road-cleaning, fire-fighting, urban afforestation, flushing toilets and construction miscellaneous water；
(3) septic tank wastewater in step (1) is transported in dosing chamber, inoculum and stalk is then added into dosing chamber, is stirred
Auger type excrement grass separator for processing is transported to after mixing uniformly, two-stage digester is entered back into and is fermented, caused clean energy resource first
Alkane gas is transported in gas-holder after dehydration desulfurizer processing, then methane gas is output into boiler end, hair by pipeline
Group of motors or/and gas user nearby use；
(4) methane gas obtained in step (3) is transported into boiler end to heat boiler, boiler inner vapor is transported to
The waste water in two-stage digester is heated in the heated shell on the outside of two-stage digester in step (3), two-stage digester
Interior temperature sensor detects in digester that temperature signal is transported to controller, during 50-55 DEG C of design temperature to be achieved, control
Device sends the magnetic valve that control signal control is closed on the heated shell connecting pipeline on the outside of boiler and two-stage digester, stops adding
Heat, on the contrary open boiler and magnetic valve；
(5) residue small part after step (3) is fermented in two-stage digester end as diluting in water pump to dosing chamber, with
Strain in dosing chamber is enriched with, while increases temperature；Remainder is transported in sludge concentration tank, sludge concentration tank supernatant conduct
The raw material of liquid fertilizer, excess sludge is transported in plate and frame filter together in sludge concentration tank carries out solid and liquid separation, solid
Matter is stored in storage tank after drying machine drying as the raw material of solid-state fertilizer；Raw material of the liquid as liquid fertilizer.
2. the recycling processing method of city domestic sewage according to claim 1, it is characterised in that by step (5) liquid
State material is handled by aperture for the micro-filtration film device of 0.1-0.3 microns, the solid suspension gone in water removal, micro-filtration delivery turbidity
Close to zero, it is then delivered in single-action lift film evaporator and is concentrated in vacuo, obtains the biogas slurry that moisture content is 50-70%,
Biogas slurry is transported in liquid fertilizer reactor, adds urea, potassium dihydrogen phosphate, potassium nitrate, humic acid potassium and micro member thereto
Element, ensure nutrient content in solution：N+P2O5+K2O >=30g/L, trace element >=4g/L, it is described trace element include Fe, Mn,
Zn, Cu, B and Mo, and Fe, Mn, Zn, Cu, B and Mo mass ratio are 4：2：2：2：2：1, at 40-55 DEG C, 200-400r/min's
Under the conditions of stir, then stop heating being cooled to room temperature, obtain water soluble fertilizer, the trace element passes through addition
EDTA-Fe, EDTA-Mn, EDTA-Zn, EDTA-Cu, ammonium molybdate and boric acid add.
3. the recycling processing method of city domestic sewage according to claim 2, it is characterised in that steam is same in boiler
When the heater that is pipelined in single-action lift film evaporator in biogas slurry is heated, and then complete concentration.
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| CN108522253A (en) * | 2018-05-09 | 2018-09-14 | 高节义 | Soilless culture system is arranged |
| CN108716293B (en) * | 2018-05-17 | 2019-05-14 | 华中科技大学 | It is a kind of that the intelligent lavatory glowed is mixed based on rural area human and animal excreta and biomass |
| CN111691494B (en) * | 2020-06-28 | 2021-03-02 | 中国环境科学研究院 | Domestic sewage recycling process |
| CN113042019B (en) * | 2021-03-16 | 2022-12-27 | 潍坊现代农业与生态环境研究院 | Regeneration method of waste activated carbon in Vc fermentation production |
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