WO2010133151A1 - 有机污水资源化处理方法 - Google Patents
有机污水资源化处理方法 Download PDFInfo
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- WO2010133151A1 WO2010133151A1 PCT/CN2010/072762 CN2010072762W WO2010133151A1 WO 2010133151 A1 WO2010133151 A1 WO 2010133151A1 CN 2010072762 W CN2010072762 W CN 2010072762W WO 2010133151 A1 WO2010133151 A1 WO 2010133151A1
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- Prior art keywords
- sewage
- water
- treatment
- sludge
- oxidation
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000002351 wastewater Substances 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000010802 sludge Substances 0.000 claims abstract description 42
- 230000008569 process Effects 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 7
- 230000001699 photocatalysis Effects 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- 230000001954 sterilising effect Effects 0.000 claims abstract 3
- 239000010865 sewage Substances 0.000 claims description 76
- 230000003647 oxidation Effects 0.000 claims description 32
- 238000007254 oxidation reaction Methods 0.000 claims description 32
- 241000195493 Cryptophyta Species 0.000 claims description 14
- 238000001179 sorption measurement Methods 0.000 claims description 14
- 238000005189 flocculation Methods 0.000 claims description 13
- 230000016615 flocculation Effects 0.000 claims description 13
- 241000894006 Bacteria Species 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000004042 decolorization Methods 0.000 claims description 10
- 239000000701 coagulant Substances 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 7
- 230000015271 coagulation Effects 0.000 claims description 7
- 238000005345 coagulation Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 206010036790 Productive cough Diseases 0.000 claims description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 6
- 238000005276 aerator Methods 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- 230000000243 photosynthetic effect Effects 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 6
- 210000003802 sputum Anatomy 0.000 claims description 6
- 208000024794 sputum Diseases 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000009287 sand filtration Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 241001148470 aerobic bacillus Species 0.000 claims description 4
- 229910001385 heavy metal Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 150000001805 chlorine compounds Chemical class 0.000 claims description 2
- 239000003712 decolorant Substances 0.000 claims description 2
- 150000003568 thioethers Chemical class 0.000 claims description 2
- 230000000249 desinfective effect Effects 0.000 claims 2
- 238000007539 photo-oxidation reaction Methods 0.000 claims 2
- BDERTNYBILRFIU-UHFFFAOYSA-N [N].N.[P] Chemical compound [N].N.[P] BDERTNYBILRFIU-UHFFFAOYSA-N 0.000 claims 1
- 229910052787 antimony Inorganic materials 0.000 claims 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims 1
- 238000004043 dyeing Methods 0.000 abstract description 12
- 239000004576 sand Substances 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 230000003311 flocculating effect Effects 0.000 abstract 2
- 230000001112 coagulating effect Effects 0.000 abstract 1
- 238000007146 photocatalysis Methods 0.000 abstract 1
- 238000004065 wastewater treatment Methods 0.000 abstract 1
- 238000012937 correction Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000029553 photosynthesis Effects 0.000 description 3
- 238000010672 photosynthesis Methods 0.000 description 3
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- VTEIFHQUZWABDE-UHFFFAOYSA-N 2-(2,5-dimethoxy-4-methylphenyl)-2-methoxyethanamine Chemical compound COC(CN)C1=CC(OC)=C(C)C=C1OC VTEIFHQUZWABDE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000589565 Flavobacterium Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 238000007540 photo-reduction reaction Methods 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/52—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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- 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
- Y02E50/10—Biofuels, e.g. bio-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
- 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
Definitions
- Organic sewage is sewage containing a large amount of organic matter, including domestic sewage, industrial sewage, etc., for example, printing
- the printing and dyeing process mainly includes: pre-treatment (single-burning book, retreating, boiling, bleaching, silking, white cloth rolling) - washing one printing, one steaming, one soaping, one finished tenter, one package.
- pre-treatment single-burning book, retreating, boiling, bleaching, silking, white cloth rolling
- washing one printing one steaming, one soaping, one finished tenter, one package.
- a large amount of sewage is generated, and the sewage composition is complex, the impurity content is high, and the discharge amount is large, and the COD content is particularly high, which seriously affects the treatment of the sewage.
- the water quality and quantity of sewage produced by a printing and dyeing enterprise are shown in the following table: The current sewage water quality and water meter
- the prior art sewage treatment process is as follows: a sewage one grid, a regulating tank, a dosing reaction tank, a primary sedimentation tank, a two-stage biological contact oxidation tank, a secondary sedimentation tank, and a standard discharge.
- the main pollutant concentrations before and after sewage treatment are as follows:
- the existing sewage treatment system is designed without considering the chromaticity of the characteristic dyeing matter. Only the decolorizing agent is added to the sedimentation tank for treatment, and the treatment effect is not good;
- the existing sewage can not reach the inter-production water standard after being treated by the sewage treatment system, and it can not be reused.
- the annual discharge is large, which not only causes waste of resources, but also disadvantages the completion of the local “energy saving and emission reduction” task.
- Organic sewage is also a potential water resource. After treatment, it can completely re-establish the production water standard of different processes and reuse it in the production process.
- the technical problem to be solved by the present invention is to provide an organic sewage resource treatment method which is reasonable in sewage treatment process, has better treatment effect, and can recover waste and gas in the treatment process.
- an organic sewage resource treatment method which is characterized in that it comprises the following steps r
- the first step is the initial sedimentation step.
- ⁇ In the primary sedimentation tank, impurities and sediments that cannot undergo anaerobic reaction are removed.
- the second step of anaerobic step discharging the sewage treated by the above steps into a fully enclosed anaerobic tank, wherein the fully enclosed anaerobic tank is provided with a plurality of baffles to ensure that the sewage has sufficient in the fully enclosed anaerobic tank Flow time; the residence time of sewage in the fully enclosed anaerobic tank is 20-40 hours; the COD removal rate of the effluent reaches 70% or more, and the PH value reaches 6 J5-8.
- the top of the closed anaerobic tank is connected with biogas storage, biogas storage
- the tank is connected to the biogas generator through a pipeline, and the electric energy generated by the biogas generator is used by the entire sewage treatment system;
- the third mash flocculation step discharging the sewage treated by the above-mentioned sputum into the purple condensate tank, adding flocculating agent and coagulating agent, and removing the COD and BOD in the water to remove the book and precipitate;
- the fourth step of oxidation discharging the sewage treated by the above steps into the oxidation ditch, using a submersible aerator and a jet aerator to achieve a water-to-gas ratio of 1:10-1:30, thereby creating aerobic bacteria
- the good living environment makes the oxidation ditch play an efficient oxidation. Under the action of the pusher, the sewage is swirled in the oxidation ditch for 5.6 hours. Under the action of aerobic bacteria, some CO and nitrogen are reduced. Phosphorus and potassium reached the national emission standard after aerobic process, COD 100mg L, BOD 30mg L, PH value 6.5-7, color less than 100 times, so that the water quality is no longer eutrophic;
- the fifth step of coagulation step discharging the sewage treated by the above steps into the coagulation tank, adding a coagulant to further remove suspended solids and fine particles in the sewage, increasing the flocculation speed by adding a coagulant, and shortening the settling time So that the SS suspension can reach iG-20mg L and ammonia nitrogen S-12mg L, so as to meet the pretreatment standard of the reclaimed water, and provide conditions for advanced treatment;
- the sixth step of photocatalytic oxidation step the supernatant after the precipitation of the sewage treated by the above steps is introduced into the photocatalytic oxidation cell and photosynthetic oxidation is carried out by photosynthetic inorganic oxidizing organism, so that residual COD, BOD and ammonia nitrogen are photooxidized. Further removal of r by biological bacteria and algae
- Step 7 Flocculation and decolorization step: adding flocculant and decolorizing agent to the water after the photo-reduction
- Step 8 Sand filtration step: mechanically filtering the middle water treated in the above steps to remove suspended solids, floating matter and sediment in the middle water, so as to further improve the quality of the treated water;
- Step 9 Modified activated carbon adsorption step: After passing through sand filtration, the medium water enters the modified activated carbon adsorption
- the modified activated carbon particles are small, the internal pores are rich, and the body surface area is large, so it has strong adsorption force, has adsorption and decolorization effect, and has a good removal effect on the organic matter in the organic sewage, so that the water quality can be recovered after treatment.
- Step 10 Sterilization and disinfection step: The water in the above step is sterilized and disinfected. It has a certain oxidation effect on COD, BOD sulfide and other dissolved substances, and all the residues are subjected to strong oxidation treatment to kill the bacteria. Heavy metals, chlorides, and sulfides are oxidized. After treatment, the water is used to meet the miscellaneous water quality standards (CJ25.1-89) and the urban wastewater reuse design code (CECS61-1994).
- the eleventh step is activated carbon adsorption. Step: The water in the above step is adsorbed by activated carbon, and the activated carbon is finally treated on the dyed material and the remaining dissolved matter. The activated carbon has a good decolorizing effect, and finally the yellowish and odorous which cannot be solved by the pre-decolorization process is further removed. The water quality meets the standards for industrial application.
- the sludge produced in the respective steps is collected and then introduced into a sludge concentration tank, and then sent to a sludge filter press to form a sludge cake, and finally the sludge is made into coal.
- the sludge coal-making method is to mix the sludge into the modified activated carbon and activated carbon after the sewage treatment, to prepare the boiler fuel or directly dry the sludge as a boiler fuel.
- the water quality of the sewage treated by the present invention is as shown in the following table. After the experiment, it fully meets and meets the industrial water reuse standard, and the reuse rate of the sewage reaches over 90%, which greatly saves water resources, social benefits and economic benefits. Significant.
- the invention generates a large amount of biogas in the anaerobic process, and recovers biogas in the case of fully enclosed, 0.4 cubic meters of biogas per cubic meter of sewage, and 0.6 kWh of 0.4 cubic meter of biogas power, and the electric energy is directly used for the present.
- the use of the various steps of the invention ensures the self-operation of the invention, so that the invention has higher social benefits and does not cause secondary pollution.
- the calorific value of the sludge collected by the present invention is about 2,500 kcal, equivalent to 0.5 tons of standard coal per ton, as a pot.
- Figure 1 is a process flow diagram of an embodiment of the present invention.
- the solid line indicates the flow direction of the sewage
- the broken line indicates the flow direction of the sludge
- the center line indicates the flow of the biogas.
- the first step is the initial sedimentation step: removing impurities and sediments that cannot undergo anaerobic reaction in the primary sedimentation tank.
- Step 2 Anaerobic step: discharging the sewage treated by the above steps into a fully enclosed anaerobic tank,
- a plurality of baffles are provided in the fully enclosed anaerobic tank to ensure sufficient flow time of the sewage in the fully enclosed anaerobic tank; the residence time of the sewage in the fully enclosed anaerobic tank is 20-40 hours; the COD removal rate of the effluent reaches 105 to 70% or more, the PH value reaches 6.5-8.0; the top of the fully enclosed anaerobic tank is connected with the biogas storage tank, and the biogas storage tank is connected to the biogas generator through the pipeline, and the electric energy generated by the biogas generator is supplied to the entire sewage treatment system.
- the third step of flocculation step discharging the sewage treated by the above steps into the flocculation tank, adding a flocculating agent and a coagulant to remove and precipitate the COD and BOD in the water. If the suspended solids are too high, a mechanical filtration step can be added to fully filter out the suspended solids in the sewage, and the supernatant is poured into the next step.
- the fourth step of oxidation discharging the sewage treated by the above steps into the oxidation ditch, using a submersible H5 aerator and a jet aerator to achieve a water-to-gas ratio of 1:10-1:30, thereby being an aerobic bacteria Create a good living environment, so that the oxidation ditch can seal the high-efficiency oxidation; under the action of the pusher, the sewage is swirled in the oxidation ditch for 5 ⁇ 6 hours, and under the action of the aerobic flora, the COD and BOD nitrogen, phosphorus and potassium reached the national emission standard after aerobic process, COD 100mg L, BOD 30mg/L, PH value 6.5-7,
- the fifth step of coagulation step discharging the sewage treated by the above steps into the coagulation tank, adding a coagulant to further remove suspended solids and fine particles in the sewage, increasing the flocculation speed by adding a coagulant, and shortening the settlement. Time, so that the SS suspension reaches 10-20mg L ammonia nitrogen 8-12mg L, thus achieving the pre-treatment standard of reclaimed water, providing conditions for advanced treatment;
- Step 6 Photocatalytic oxidation step: the supernatant treated by the above steps is subjected to precipitation
- Purification removes nitrogen, phosphine, and enriches heavy metals, and provides a medium for microorganisms to promote the removal of pollutants and improve water quality.
- Algae rely on sunlight for photosynthesis and atmospheric oxygen to produce a large number of new algae cells, so algae plays an indispensable role in sewage treatment.
- Step 7 Flocculation and decolorization step: Add flocculant and decolorant in the water after photocatalytic oxidation, reduce all solids and chromaticity to the deep treatment standard, COD reaches 70mg/L or less, BOD reaches IJ5 20mg/L Below, the SS suspension reaches i0mg L, the chroma seal is less than 30 times, and other measures are within the limits specified by the state (CECS61-1994).
- Step 8 Sand filtration step: The mechanical water treated in the above step is mechanically filtered to remove suspended solids, floating matter and sediment from the residual water to further improve the quality of the treated water.
- the ninth step is to modify the activated carbon adsorption step r. After the water is filtered through the sand, it enters the modified activated carbon adsorption.
- the modified activated carbon particles are small, the internal pores are rich, and the surface area is large, so it has a strong suction.
- Correction page (Article 91) With force, it has the function of adsorption and decolorization, which has a good removal effect on the organic matter in the printing and dyeing sewage, so that the water standard can be recycled after the water is sealed.
- Step 10 Sterilization and disinfection step: The water in the above step is sterilized and disinfected. It has a certain oxidation effect on COD, BOD sulfide and other dissolved substances, and all the residues are subjected to strong oxidation treatment to make bacteria, heavy metals, Chloride and sulfide sulphide are oxidized and killed in one step, and recycled water after treatment reaches the standard of miscellaneous water quality (CJ25.1-89) and urban wastewater reuse design code (CECS61-1994);
- the eleventh ⁇ activated carbon adsorption step The above-mentioned sputum-treated water is adsorbed by activated carbon, and the activated carbon is used for the final processing of the dyed material and the remaining dissolved matter.
- the activated carbon has a good decolorization effect, and finally the pre-decolorization process is solved.
- the yellowish and odorous odors are further removed, and the water quality reaches the printing and dyeing: art use standard.
- the sludge produced in each of the above steps is collected and then introduced into a sludge concentration tank, which is then sent to a sludge filter to form a sludge cake.
- Sludge is a major problem in the treatment of sewage treatment by Changsi Ffi. Deep processing has broad prospects for development. After anaerobic decomposition, the sludge is rich in nitrogen, phosphorus and potassium, and the bacteria and harmful substances are bio-composted. It is systematically processed and then made into biological fertilizer for landscaping. Printing and dyeing sludge is originally a kind of combustible material. It forms an intrinsic carbon compound in the anaerobic process.
- the modified activated carbon and activated carbon can be used as boiler fuel and domestic coal. It reduces pollution and saves energy compared with traditional sludge treatment methods. It has truly turned waste into treasure and created good economic benefits and society for the country. benefit.
- the water quality of the sewage treated by the invention is completely met and meets the industrial water reuse standard, and the reuse rate of the sewage reaches over 90%, which greatly saves water resources, and the social and economic benefits are very significant.
- the invention generates a large amount of biogas in the anaerobic process, and recovers biogas in the case of fully enclosed, 0.4 cubic meters of biogas per cubic meter of sewage, and 0.6 kWh of biogas generated by 0.4 cubic meters.
- the sludge collected by the invention has a calorific value of about 2,500 kcal, equivalent to 0.5 tons of standard coal per ton. As a boiler fuel, it saves the operating cost of the enterprise and avoids secondary pollution caused by sewage landfill.
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Description
有机污水资源化处理方法
技术领域 本发明涉及一种有机污水的处理方法。 背景技术 有机污水是含有大量有机物的污水, 包括生活污水、 工业污水等, 例如印
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染工业中产生的污水。 印染工艺流程主要包括: 前处理 (烧毛书一退、 煮、 漂一丝光一白布打卷) —水洗一印花一蒸化一皂洗一成品拉幅一包装成件。 在整个生产过程中, 产生 了大量的污水, 且污水成分复杂, 杂质含量高, 并且排放量大, COD含量特别 高, 严重影响着污水的处理。 某印染企业产生的污水水质、 水量见下表: 现产生的污水水质、 水量表
现有技术污水处理工艺为: 污水一格栅一调节池一加药反应池一初沉池一 两段生物接触氧化池一二沉池一迖标排放。 污水处理前后主要污染物浓度见下表:
1
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由上表可知, 污水经处理达到 《污水综合排放标准》 中三类排放标准。 现有技术的污泥处理***现状: 污水处理过程产生大量污泥, 包括一沉池、 混凝反应池中产生的化学污泥及二沉池中产生的剩余活性污泥, 现有的污泥处 理是将各个工艺单元产生的污泥提升到污泥浓缩池中进行浓缩, 将浓缩后污泥 送入带式脱水机脱水, 脱水后泥饼外运填埋, 造成环境污染和资源浪费。
现有技术污水处理***存在的主要问题:
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1. ***处理过程中产生大量的空气污染, 生化处理过程中产生的潜气被浪 费; 书
2. 现有污水处理***设计时未考虑到特征染色物的色度, 仅在沉淀池添加 了脱色剂进行处理, 处理效果不好;
3.现有污水经污水处理***处理后达不到产间用水标准, 无法回用, 年排放 量较大, 既造成了资源的浪费, 也不利予当地 "节能减排"任务的完成。
4. 现有污泥处理***将活性污泥和化学污泥混合脱水后填埋, 造成资源浪 费及环境的污染。 发明内容 有机污水也是一种潜在的水资源, 经过处理后完全可以重新达到不同工序的 生产用水标准而 Θ封生产过程中重复利用。面此,本发明所要解决的技术问題是 提供一种污水处理工艺合理、 处理效果较佳、 处理过程中的污物和气体能回收 利用的有机污水资源化处理方法。
为解决上述技术问题, 本发明的技术方案是: 有机污水资源化处理方法, 其特征在于, 包括以下步骤 r
第一步 初沉步骤. ·在初沉池中把不能发生厌氧反应的杂质.、泥沙沉淀去除;
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第二步 厌氧步骤: 将经过上述步骤处理的污水排入全封闭厌氧池中, 所述 全封闭厌氧池内设有多个折流板, 以保证污水在全封闭厌氧池内具有足够的流 动时间; 污水在全封闭厌氧池内的存留时间为 20-40小时; 出水 COD去除率达 到 70%以上, PH值达到 6 J5-8 之 ί¾ 闭厌氧池的顶部与沼气储存 接, 沼气储存罐通过管道连接至沼气发电机, 沼气发电机产生的电能供整个污水处 理***使用; 说
第三歩絮凝歩骤:将经过上述歩骤处理的污水排入紫凝池中,加入絮凝剂、 助凝剂, 把水中的 COD、 BOD再进行脱除书、 沉淀;
第四步氧化步骤: 将经过上述步骤处理的污水排入氧化沟中, 使用潜水式 曝气机和射流曝气机, 使水气比达到 1 : 10-1: 30, 从而为好氧菌创造好的生存 环境, 使氧化沟起到高效的氧化作用; 在推流器的作用下, 使污水在氧化沟当 中回旋 5·6小时, 在好氧菌群的作用下, 再降低部分 CO 和 氮、磷、 钾 在好氧过程后达到了国家的排放标准, COD 100mg L,BOD 30mg L, PH值 6.5-7, 色度 100倍以下, 使水质不再富营养化;
第五步 混凝步骤:将经过上述步骤处理的污水排入混凝池中,加入混凝剂, 进一步去除污水中的悬浮物和细小颗粒, 通过投加混凝剂提高絮凝速度, 缩短 沉降时间, 使 SS悬浮物达封 iG-20mg L,氨氮 S-12mg L左右, 从而达封了中水 的前处理标准, 为深度处理提供条件;
第六步 光催氧化步骤: 将经过上述步骤处理的污水经沉淀以后的上清液进 入光催氧化池再通过光合无机氧化生物进行光合氧化, 使残余的 COD、 BOD、 氨氮磷在光合氧化、 生物细菌、 藻类作用下进一步去除 r
第七步 絮凝脱色步骤: 在光催 ft化以后的中水再加入絮凝剂、 脱色剂, 把
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所有的固体物及色度降低到深度处理标准, COD达到 70mg/L以下, BOD达到 20mg/L以下, SS悬浮物迗至 0mg/L, 色度封 30倍以下, 其他指标均迗到国家 限定的 (CECS61-1994)所规定的指标内;
第八步 沙滤步骤: 将上述步骤处理后的中水进行机械过滤, 去除中水中的 悬浮物、 漂浮物和沉淀物, 使处理后的中水水质进一步改善;
第九步 改性活性碳吸附步骤: 中水在经过沙滤以后, 进入改性活性炭吸附
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装置中, 改性活性炭颗粒小, 内部孔隙丰富, 体表面积大, 因此具有很强的吸 附力, 具有吸附脱色作用, 对有机污水中书的有机物有很好的去除作用, 使水质 达到处理后回收利用水标准;
第十步 杀菌消毒步骤:将上述步骤处理后的中水进行杀菌消毒,对于 COD、 BOD硫化物及其他溶解物有一定的氧化作用,把所有的残留物实行强氧化处理, 使细菌被杀灭, 重金属、 氯化物、 硫化物进一歩氧化, 处理后西收利用水达到 生活杂用水质标准 (CJ25.1-89) 和城市污水回用设计规范 (CECS61-1994); 第十一步 活性炭吸附步骤: 将上述步骤处理后的中水经过活性炭吸附, 活 性炭对染化料及剩余的溶解物进行最后处理, 活性炭具有良好的脱色效果, 最 后将前脱色过程解决不了的微黄色及异味进一步的去除, 水质达到工业应用使 用标准。
作为优选的技术方案, 在所述各步骤中产生的污泥, 收集后进入污泥浓缩 池, 然后送入污泥压滤机, 使污泥结成泥饼, 最后将污泥制煤。
作为对上述技术方案的改进 所述污泥制煤的方法是将污泥混入污水处理 使用后的改性活性炭和活性炭中, 制成锅炉用燃料 或者直接将污泥干燥后作 为锅炉用燃料。
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作为优选的技术方案, 在第三步絮凝步骤后增加机械过滤步骤, 充分滤除 污水中的悬浮物。 由于釆用了上述技术方案, 其有益效果是:
L经过本发明处理后的污水的水质如下下表所示, 经过实验, 完全达到且 满足工业回用水标准, 污水的回用率达到 90%以上, 大大节约了水资源, 社会 效益和经济效益非常显著。
说 书
2. 本发明在厌氧过程中产生大量的沼气,在全封闭的情况下进行沼气回收, 每立方米污水可产生沼气 0.4立方米, 0.4立方米沼气发电量是 0.6kWh, 电能直 接用于本发明各步骤使用, 保障了本发明的自运转, 使本发明具有更高的社会 效益, 且不会造成二次污染。
3. 本发明收集的污泥热值约 2500大卡, 每吨相当于 0.5吨标准煤, 作为锅
•^m ^ 节省了企业的运行成本, 避免了污物填埋造成的二次污染。 擀图说明 图 1是本发明实施例的工艺流程图。 图 1 中: 实线表示污水的流向, 虚线表示污泥的流向, 中心线表示沼气的
5
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流向。 具体实施方式 下面以印染污水的资源化处理为例来更清楚地阐明本发明的实质。 loo 如 S 1所示, 印染污水资源化处理方法, 包括以下步骤
第一步 初沉步骤:在初沉池中把不能发生厌氧反应的杂质、泥沙沉淀去除。 第二步 厌氧步骤: 将经过上述步骤处理的污水排入全封闭厌氧池中, 所述
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全封闭厌氧池内设有多个折流板, 以保证污水在全封闭厌氧池内具有足够的流 动时间; 污水在全封闭厌氧池内的存留时间书为 20-40小时; 出水 COD去除率达 105 到 70%以上, PH值达到 6.5-8.0之间; 全封闭厌氧池的顶部与沼气储存罐连接, 沼气储存罐通过管道连接至沼气发电机, 沼气发电机产生的电能供整个污水处 理***使用; 沼气储存罐与全封闭厌氧池之间安装脱硫罐, 把硫化物转化为硫 酸物, 并且为了更加安全, 增加一套阻火装置防止西火引起***, 使发电及生 活用气更加安全可靠。 原水 COD 2000mg L经过厌氧处理后, 每立方水产生沼 no 气 0.4/立方, 0.4立方沼气发电量是 0.6度。
第三步 絮凝步骤:将经过上述步骤处理的污水排入絮凝池中,加入絮凝剂、 助凝剂, 把水中的 COD、 BOD再进行脱除、 沉淀。 若悬浮物过高, 可增加机械 过滤歩骤, 充分滤除污水中的悬浮物, 上清液迸入下一歩骤。
第四步氧化步骤: 将经过上述步骤处理的污水排入氧化沟中, 使用潜水式 H5 曝气机和射流曝气机, 使水气比达到 1 : 10-1: 30, 从而为好氧菌创造好的生存 环境, 使氧化沟起封高效的氧化作用; 在推流器的作用下, 使污水在氧化沟当 中回旋 5<6小时, 在好氧菌群的作用下, 再降低部分 COD和 BOD 氮、 磷、 钾 在好氧过程后达到了国家的排放标准, COD 100mg L,BOD 30mg/L, PH值 6.5-7,
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色度 100倍以下, 使水质不再富营养化;
120 第五步 混凝步骤:将经过上述步骤处理的污水排入混凝池中,加入混凝剂, 进一步去除污水中的悬浮物和细小颗粒, 通过投加混凝剂提高絮凝速度, 缩短 沉降时间, 使 SS悬浮物达到 10-20mg L氨氮 8-12mg L左右, 从而达到了中水 的前处理标准, 为深度处理提供条件;
第六步 光催氧化步骤: 将经过上述步骤处理的污水经沉淀以后的上清液进
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125 入光催氧化池再通过光合无机氧化生物迸行光合氧化, 使残余的 COO、 BOD、 氨氮磷在光合氧化、 生物细菌、 藻类作用书下进一步去除; 生物细菌包括假单胞 菌、 黄杆菌、 产碱杆菌及光合菌等, 藻类有水球藻, 棚列藻、 夜藻、 服虫藻等, 藻类起供氧、 去除磷的作用, 原生动物、 后生动物可吞食游离细菌和细小悬浮 物。 各种生物, 细菌, 藻类, 在风与光合的作用下成为一种生物植物链。 在水
130 质净化中去除氮、 膦、 富集重金属, 并可为微生物提供介质, 促迸污染物去除 功能的提高, 使水质更清。 藻类靠阳光照射的光合作用及大气供氧产生大量的 藻类新细胞, 所以藻类在污水处理中起着不可缺少的作用。
第七步 絮凝脱色步骤: 在光催氧化以后的中水再加入絮凝剂、 脱色剂, 把 所有的固体物及色度降低到深度处理标准, COD达到 70mg/L以下, BOD达到 IJ5 20mg/L以下, SS悬浮物达封 i0mg L, 色度封 30倍以下, 其他措标均达到国家 限定的 (CECS61-1994 )所规定的指标内。
第八步 沙滤步骤: 将上述步骤处理后的中水进行机械过滤, 去餘中水中的 悬浮物、 漂浮物和沉淀物, 使处理后的中水水质进一步改善。
第九步 改性活性碳吸附步骤 r 中水在经过沙滤以后, 进入改性活性炭吸附
140 装置中, 改性活性炭颗粒小, 内部孔隙丰富, 体表面积大, 因此具有很强的吸
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附力, 具有吸附脱色作用, 对印染污水中的有机物有很好的去除作用, 使水质 迗封处理后回收利用水标准;
第十步 杀菌消毒步骤:将上述步骤处理后的中水进行杀菌消毒,对于 COD、 BOD硫化物及其他溶解物有一定的氧化作用,把所有的残留物实行强氧化处理, 使细菌、 重金属、 氯化物、 硫化物迸一步氧化及杀灭, 处理后回收利用水达到 生活杂用水质标准 (CJ25.1-89) 和城市污水回用设计规范 (CECS61-1994);
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第十一歩活性炭吸附歩骤: 将上述歩骤处理后的中水经过活性炭吸附, 活 性炭对染化料及剩余的溶解物进行最后处书理, 活性炭具有良好的脱色效果, 最 后将前脱色过程解决不了的微黄色及异味进一步的去除, 水质达到印染 :艺使 用标准。
在上述各步骤中产生的污泥, 收集后进入污泥浓缩池, 然后送入污泥压滤 机, 使污泥结成泥饼。 污泥是长斯 ffi扰污水处理的一大难题, 实行深加工有着 广阔发展的前景, 污泥通过厌氧分解以后, 含有丰富的氮、 磷、 钾, 用生物堆 肥技术将其中的细菌和有害物质进行***化处理, 然后制成生物肥, 用于园林 绿化。 印染污泥本来就是一种可燃物, 在厌氧过程中又形成一种本质炭化合物, 所以污泥的热值很高, 热量可达到 2500大卡, 经过加工或者将污泥混入污水处 理使用后的改性活性炭和活性炭中, 可作为锅炉燃料和生活用煤, 比传统污泥 处理法减少了污染, 节约了能源, 真正做到了变废为宝, 为国家创造了很好的 经济效益和社会效益。
在上面的洋细描述中, 印染污水资源化处理方法仅仅是本发明的示范性实 施例。 毋庸置疑, 本领域的普通技术人员可以认识到, 在不傭离本发明的精神 和范围的情况下, 可以通过本发明处理任何的有机污水。 因此, 本实施例在本
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质上是说明性的, 而不是用于限制权利要求的保护范围。
工业实用性
1. 经过本发明处理后的污水的水质完全达到且满足工业回用水标准, 污水 的回用率达到 90%以上, 大大节约了水资源, 社会效益和经济效益非常显著。
2. 本发明在厌氧过程中产生大量的沼气,在全封闭的情况下进行沼气回收, 每立方米污水可产生沼气 0.4立方米, 0.4立方米沼气发电量是 0.6kWh, 电能直
说
接用于本发明各歩骤使用, 保障了本发明的自运转, 使本发明具有更高的社会 效益, 且不会造成二次污染。 书
3. 本发明收集的污泥热值约 2500大卡, 每吨相当于 0.5吨标准煤, 作为锅 炉燃料, 节省了企业的运行成本, 避免了污物填埋造成的二次污染。
9
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Claims
1. 有机污水资源化处理方法, 其特征在于, 包括以下歩骤:
第一歩 初沉歩骤:在初沉池中把不能发生厌氧反应的杂质、泥沙沉淀去除; 第二歩 厌氧歩骤: 将经过上述歩骤处理的污水排入全封闭厌氧池中, 所述 全封闭厌氧池内设有多个折流板, 以保证污水在全封闭厌氧池内具有足够的流 动时间; 污水在全封闭厌氧池内的存留时间为 20-40小时; 出水 COD去除率达 到 70%以上, PH值达到 6.5-8.0之间; 全封闭厌氧池的顶部与沼气储存罐连接, 沼气储存罐通过管道连接至沼气发电机, 沼气发电机产生的电能供整个污水处 理***使用;
第三歩 絮凝歩骤:将经过上述歩骤处理的污水排入絮凝池中,加入絮凝剂、 助凝剂, 把水中的 COD、 BOD再进行脱除、 沉淀;
第四歩 氧化歩骤: 将经过上述歩骤处理的污水排入氧化沟中, 使用潜水 曝气机和射流曝气机, 使水气比达到 1 : 10-1: 30, 从而为好氧菌创造好的生存 环境, 使氧化沟起到高效的氧化作用; 在推流器的作用下, 使污水在氧化沟当 中回旋 5-6小时, 在好氧菌群的作用下, 再降低部分 COD和 BOD; 氮、 磷、 钾 在好氧过程后达到了国家的排放标准, COD 100mg/L,BOD 30mg/L, PH值 6.5-7, 色度 100倍以下, 使水质不再富营养化;
第五歩 混凝歩骤:将经过上述歩骤处理的污水排入混凝池中,加入混凝剂, 进一歩去除污水中的悬浮物和细小颗粒, 通过投加混凝剂提高絮凝速度, 缩短 沉降时间, 使 SS悬浮物达到 10-20mg/L,氨氮 8-12mg/L左右, 从而达到了中水 的前处理标准, 为深度处理提供条件;
第六歩 光催氧化歩骤: 将经过上述歩骤处理的污水经沉淀以后的上清液进 入光催氧化池再通过光合无机氧化生物进行光合氧化, 使残余的 COD、 BOD、
权 利 要 求 书
氨氮磷在光合氧化、 生物细菌、 藻类作用下进一歩去除;
第七歩 絮凝脱色歩骤: 在光催氧化以后的中水再加入絮凝剂、 脱色剂, 把 所有的固体物及色度降低到深度处理标准, COD达到 70mg/L以下, BOD达到 20mg/L以下, SS悬浮物达到 10mg/L, 色度到 30倍以下, 其他指标均达到国家 限定的 (CECS61-1994) 所规定的指标内;
第八歩 沙滤歩骤: 将上述歩骤处理后的中水进行机械过滤, 去除中水中的 悬浮物、 漂浮物和沉淀物, 使处理后的中水水质进一歩改善;
第九歩 改性活性碳吸附歩骤: 中水在经过沙滤以后, 进入改性活性炭吸附 装置中, 改性活性炭颗粒小, 内部孔隙丰富, 体表面积大, 因此具有很强的吸 附力, 具有吸附脱色作用, 对有机污水中的有机物有很好的去除作用, 使水质 达到处理后回收利用水标准;
第十歩 杀菌消毒歩骤:将上述歩骤处理后的中水进行杀菌消毒,对于 COD、 BOD硫化物及其他溶解物有一定的氧化作用,把所有的残留物实行强氧化处理, 使细菌被杀灭, 重金属、 氯化物、 硫化物进一歩氧化, 处理后回收利用水达到 生活杂用水质标准 (CJ25.1-89) 和城市污水回用设计规范 (CECS61-1994); 第十一歩 活性炭吸附歩骤: 将上述歩骤处理后的中水经过活性炭吸附, 活 性炭对染化料及剩余的溶解物进行最后处理, 活性炭具有良好的脱色效果, 最 后将前脱色过程解决不了的微黄色及异味进一歩的去除, 水质达到工业应用使 用标准。
2.如权利要求 1所述的有机污水资源化处理方法, 其特征在于, 在所述各歩 骤中产生的污泥, 收集后进入污泥浓缩池, 然后送入污泥压滤机, 使污泥结成 泥饼, 最后将污泥制煤。
权 利 要 求 书
3.如权利要求 2所述的有机污水资源化处理方法, 其特征在于, 所述污泥制 煤的方法是将污泥混入污水处理使用后的改性活性炭和活性炭中, 制成锅炉用 燃料; 或者直接将污泥干燥后作为锅炉用燃料。
4.如权利要求 1所述的有机污水资源化处理方法, 其特征在于, 在第三歩絮 凝歩骤后增加机械过滤歩骤, 充分滤除污水中的悬浮物。
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