CN105502852B - A kind of method of quick processing garbage burning factory landfill leachate - Google Patents
A kind of method of quick processing garbage burning factory landfill leachate Download PDFInfo
- Publication number
- CN105502852B CN105502852B CN201610050939.8A CN201610050939A CN105502852B CN 105502852 B CN105502852 B CN 105502852B CN 201610050939 A CN201610050939 A CN 201610050939A CN 105502852 B CN105502852 B CN 105502852B
- Authority
- CN
- China
- Prior art keywords
- tank
- biological
- sludge
- landfill leachate
- enters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 238000005345 coagulation Methods 0.000 claims abstract description 23
- 230000015271 coagulation Effects 0.000 claims abstract description 23
- 244000005700 microbiome Species 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 239000000706 filtrate Substances 0.000 claims abstract description 13
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 5
- 230000005591 charge neutralization Effects 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims abstract 5
- 239000002893 slag Substances 0.000 claims abstract 3
- 239000010802 sludge Substances 0.000 claims description 39
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000005189 flocculation Methods 0.000 claims description 18
- 230000016615 flocculation Effects 0.000 claims description 18
- 238000004062 sedimentation Methods 0.000 claims description 16
- 230000000813 microbial effect Effects 0.000 claims description 9
- 238000004056 waste incineration Methods 0.000 claims description 9
- 241000894006 Bacteria Species 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000009629 microbiological culture Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 3
- 241000193830 Bacillus <bacterium> Species 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 15
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 3
- 241000673657 Bacillus sp. TC16 Species 0.000 abstract description 2
- 239000005416 organic matter Substances 0.000 abstract 1
- -1 treated Substances 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 208000005156 Dehydration Diseases 0.000 description 6
- 230000018044 dehydration Effects 0.000 description 6
- 238000006297 dehydration reaction Methods 0.000 description 6
- 235000015097 nutrients Nutrition 0.000 description 6
- 238000004321 preservation Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 238000005273 aeration Methods 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000002306 biochemical method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000194110 Bacillus sp. (in: Bacteria) Species 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005406 washing 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
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of method of quick processing garbage burning factory garbage filter, specially biological flocculant is generated using specific microorganism bacillus sp.TC16, effect is swept by adsorbing bridge linking effect, charge neutralization and volume to polymerize with SS, COD, BOD in landfill leachate to precipitate, separation of solid and liquid is carried out using solid-liquid separating equipment, the filter residue isolated can be as the raw material of production organic fertilizer, and the filtrate isolated realizes qualified discharge after biological oxidation is handled.Treatment process is made of biological coagulation slag removing system and biological oxidation system two parts, this method has low stable effluent quality, operating cost, processing time is short, non-secondary pollution high to the removal rate of ammonia nitrogen and organic matter, it can effectively realize the processing of garbage burning factory landfill leachate, treated, and water can be used for landscape planting or carwash.
Description
One, the technical field
The invention relates to a garbage treatment technology, in particular to a biological method for rapidly treating garbage percolate of a garbage incineration plant.
Second, background Art
The garbage leachate generated by a garbage incineration plant mainly refers to sewage which is percolated out by rotting, deteriorating and fermenting organic matters in the process of stacking garbage in a storage pit. Different from the landfill leachate of the refuse landfill, the landfill leachate of the refuse incineration plant belongs to fresh leachate, the BOD/COD ratio is relatively high, and the biochemical treatment is easy.
The water quality characteristics of the landfill leachate of a refuse incineration plant are as follows: (1) the Suspended Solids (SS) concentration is high. The SS concentration of the landfill leachate of the incineration plants is often 10000mg/L of 5000-; (2) high COD and BOD/COD ratio. Because the content of organic matters in the garbage incineration plant is high, the retention time of stacking in the garbage storage pit is short, and the organic matters can not be degraded in time, the garbage leachate of the incineration plant has high COD (chemical oxygen demand)CrAt 40000-; (3) high NH3-N content, the NH3-N content of landfill leachate in incineration plants can be usually 300-1000 mg/L; (4) high concentration of calcium, magnesium and the like, and high hardness of landfill leachate, usually Ca2+Over 3000Mg/L of Mg2+Above 400 mg/L.
According to the characteristics of the garbage percolate of a garbage incineration plant, the treatment method mainly applied at present is a physical and chemical treatment method and a biochemical treatment method.
The physical and chemical treatment method mainly comprises a coagulating sedimentation method, a chemical oxidation method, an electrolysis method, an adsorption method, a membrane separation method and an ammonia stripping method, has the advantages of small influence of the water quality of the landfill leachate and stable water quality of effluent, but has the defects of high economic cost and easy secondary pollution, and is usually used as a pretreatment or advanced treatment method.
The biochemical method is the most common method at present, mainly adopts microorganisms to treat wastewater, is widely applied at home and abroad, and has the advantages of low operating cost and no secondary pollution to the environment. At present, three types of aerobic biological treatment, anaerobic biological treatment and anaerobic/aerobic combined method are commonly used.
Because the composition of the landfill leachate is complex, the concentration of organic pollutants is high, and the stability of the effluent quality is difficult to ensure by adopting a single existing treatment technology, the combined process of a plurality of methods is frequently adopted.
The Chinese patent application 200510102946.X discloses equipment and a method for treating garbage percolate of a biochemical garbage incineration plant. Although the whole system has the advantages of small floor area, strong adaptability, good effluent quality, no bacteria and suspended matters, high automation degree, system safety and the like, the operation cost is high, the system needs to be regularly flushed, and the generation amount of concentrated solution is large, so that the concentrated solution needs to be treated.
The Chinese patent application 2011101087954 discloses a leachate treatment system for a waste incineration plant, which adopts a physicochemical-biochemical combined process, comprises a grating, a grit chamber, an adjusting tank, a reaction sedimentation tank, a middle water tank, an upflow anaerobic sludge bed, a secondary A/O tank, a membrane bioreactor, a Fenton-electrochemical reactor, an aeration biological fluidization tank, a sedimentation tank and a sludge concentration tank, and comprehensively uses a physical and biochemical method to treat the leachate.
At present, the investment and the operation cost for treating the landfill leachate of the waste incineration plants in China are large, and the investment for treating the landfill leachate is generally 5-10 ten thousand yuan per ton, the treatment cost is 50-80 yuan per ton, and the treatment period is long, and is generally 10-15 days depending on the scale of the landfill leachate. Therefore, it is very important to develop a method for rapidly treating landfill leachate of a waste incineration plant to reduce the construction and operation costs.
Third, the invention
Aiming at the defects in the prior art, the invention aims to provide a method for rapidly treating the garbage percolate of a garbage incineration plant, which utilizes specific microorganisms to generate a high-efficiency biological flocculant to perform biological flocculation reaction with SS and COD in the garbage percolate, removes the SS and most of the COD through a solid-liquid separator, greatly reduces the operation load of a rear-end biochemical treatment system, creates good conditions for the effective operation of the biochemical treatment system, and can realize the standard discharge of the garbage percolate in a short time.
The technical scheme adopted by the invention is as follows:
the method for rapidly treating the garbage percolate of the garbage incineration plant is characterized in that a specific microorganism Bacillus sp.TC16 (preservation unit: common microorganism center of China microbial culture preservation management Committee, preservation address: institute of microorganism institute of China academy of sciences No. 3 of Sumiyah No. 1, N.beijing, republic of the south China, the preservation time: 2011 12 and 20 days, preservation number: CGMCC No.5621, classification name: Bacillus sp.) is utilized to generate a bioflocculant, SS, COD and BOD in the garbage percolate are polymerized and precipitated through adsorption bridging, charge neutralization and rolling sweeping, solid-liquid separation is carried out by adopting solid-liquid separation equipment, the separated semi-dried filter residue can be used as a raw material for producing an organic fertilizer, and the separated clear filtrate is discharged after reaching the standard through a further biological oxidation system. The method has the advantages of stable effluent quality, low operation cost, high removal rate of ammonia nitrogen and organic matters, no secondary pollution and short treatment time, and can effectively realize the rapid treatment of the landfill leachate of the refuse incineration plant.
The method for rapidly treating the landfill leachate of the waste incineration plant comprises a biological coagulation deslagging system and a biological oxidation system. The biological coagulation deslagging system sequentially comprises a grid/grit chamber, an adjusting tank, a biological flocculation tank, a sedimentation tank, a sludge collecting tank, a microorganism culture tank, a biological coagulation reaction tank and a solid-liquid separation facility; the biological oxidation system comprises a water collecting tank, an aerobic tank, an anoxic biochemical tank and a secondary sedimentation tank.
In the biological treatment process, the grid/grit chamber filters larger suspended matters of the garbage percolate, filtrate enters the regulating tank to regulate water quantity and water quality and then enters the biological flocculation tank, microbial liquid in the microbial culture tank is introduced into a bacteria liquid inlet pump to enter the biological flocculation tank, microbes generate a large amount of biological flocculants and perform flocculation and precipitation reaction with SS and COD in the filtrate, SS and insoluble organic matters in the garbage percolate are removed by precipitation in the sedimentation tank, precipitated sludge enters the sludge collection tank, and supernatant enters the water collection tank. The retention time of the garbage filtrate in the biological flocculation tank is 0.5-1.0 h, and the volume ratio of the filtrate to the bacterial liquid is 10: 1-50: 1.
The sludge in the sludge collecting tank enters a biological coagulation reaction tank, the sludge and the microbial liquid are fully mixed under the action of a stirrer in the biological coagulation reaction tank, a small amount of nutrient (mainly comprising nitrogen, phosphorus, potassium, calcium, magnesium, iron, sulfur and other nutrient elements and a small amount of organic carbon source) is added, and an aeration system is adopted to provide O required by the microorganisms2Under the action of the microbial liquid, the bound water in the sludge is destroyed, the physical and chemical properties of the sludge are modified, and the dehydration performance of the sludge is improved. The retention time of the sludge in the biological coagulation reaction tank is 1.0-5.0 h, the volume ratio of the sludge to the bacterial liquid is 5: 1-50: 1, and the adding amount of the nutrient is 1-10 kg/m3。
The dehydration performance of the sludge after the biological coagulation reaction is improved, and the sludge enters a solid-liquid separation device for sludge-water separation. The solid matter is separated and filter-pressed into semi-dried mud cakes, and the mud cakes contain rich organic matters and have low water content, so the mud cakes can be directly crushed and are fermented at high temperature to prepare organic fertilizer, and clear filtrate obtained by solid-liquid separation of the mud enters a water collecting tank.
The outlet of the water collecting tank is connected with the inlet of the biochemical tank, the biochemical tank adopts a two-stage A/O process, and each stage of A/O consists of 1 anoxic tank (A tank) and 1 aerobic tank (O tank). The anoxic tank is internally provided with a submersible stirrer for mixing, and the aerobic tank adopts a Roots blower for oxygen supply. The hydraulic retention time of the biochemical unit is 2-3 d, wherein the retention time in 2 aerobic tanks is 18-24 h respectively, and the retention time in an anoxic tank is 6-12 h respectively. The dissolved oxygen concentration of the anoxic tank is below 0.4mg/L, and the dissolved oxygen concentration of the aerobic tank is above 2 mg/L.
And (3) the sludge-water mixed liquor discharged from the biochemical tank enters a secondary sedimentation tank for sludge-water separation, the separated water quality can be discharged up to the standard, part of the precipitated sludge flows back to the anoxic tank, and the rest of the sludge enters a biological coagulation reaction tank for filter pressing and dehydration treatment.
Due to the adoption of the scheme, the invention has the following advantages:
the method utilizes specific microorganisms to generate a bioflocculant, and the bioflocculant is polymerized with SS and COD in the landfill leachate through the adsorption bridging action, the charge neutralization action and the rolling sweeping action to precipitate, and has the advantages of high reaction speed, no secondary pollution and running cost saving compared with the adoption of an inorganic or organic coagulant.
By adopting the biological coagulation deslagging system, more than 95 percent of SS, more than 80 percent of COD and the like can be removed only by 1.0-5.0 h, the load of subsequent biochemical treatment is greatly reduced, the whole treatment time of the garbage percolate can be shortened to about 3d, the standard of Integrated wastewater discharge Standard (GB8978-1996) can be completely met, and the quality of the effluent water is stable.
Compared with the traditional physicochemical-biochemical combined process, the method has the advantages of short treatment period, low operation cost and stable effluent quality.
Description of the drawings
The various aspects of the present invention will become more apparent to those of ordinary skill in the art after reading the detailed description of the invention in light of the accompanying drawings. Those skilled in the art will understand that: these drawings are only for the purpose of illustrating the technical solutions of the present invention in connection with the embodiments and are not intended to limit the scope of the present invention. Wherein,
FIG. 1 is a process flow diagram of a method for rapidly treating landfill leachate of a waste incineration plant according to the present invention.
FIG. 2 is a process flow diagram of an embodiment of the method for rapidly treating landfill leachate of a waste incineration plant according to the present invention.
Fifth, detailed description of the invention
The invention is described in further detail below with reference to fig. 2.
A method for rapidly treating landfill leachate of a waste incineration plant comprises a biological coagulation deslagging system and a biological oxidation system. The biological coagulation deslagging system sequentially comprises a grating/grit chamber, an adjusting tank, a biological flocculation tank, a sedimentation tank, a sludge collecting tank, a microorganism culture tank, a biological coagulation reaction tank and a diaphragm box type filter press; the biological oxidation system comprises a water collecting tank, a secondary A/O tank and a secondary sedimentation tank.
In the biological treatment process, the grid/grit chamber filters larger suspended matters in the landfill leachate, the filtrate enters the regulating tank for water quantity and water quality regulation and then enters the biological flocculation tank, the microorganism liquid in the microorganism culture tank is introduced into the bacteria liquid inlet pump and enters the biological flocculation tank, and the microorganisms generate a large amount of biological flocculants and generate flocculation precipitation reaction with SS and COD in the filtrate. And precipitating in a sedimentation tank to remove SS and insoluble organic matters in the landfill leachate, allowing the precipitated sludge to enter a sludge collection tank, and allowing the supernatant to enter a water collection tank. The effective volume of the biological flocculation tank is 25m3The hydraulic retention time of the landfill leachate is 0.5h, and the volume ratio of the landfill leachate to the bacterial liquid is 20: 1.
The sludge in the sludge collecting tank enters a biological coagulation reaction tank, the sludge and the microbial liquid are fully mixed under the action of a stirrer in the biological coagulation reaction tank, a small amount of nutrient (mainly comprising nitrogen, phosphorus, potassium, calcium, magnesium, iron, sulfur and other nutrient elements and a small amount of organic carbon source) is added, and an aeration system is adopted to provide O required by the microorganisms2The internal bound water in the sludge is destroyed under the action of the microbial liquid, the sludge is modified, and the dehydration performance of the sludge is improved. The volume of the biological coagulation reaction tank is 50m3The hydraulic retention time is 3 h. The ratio of the microbial liquid to the sludge is 1: 10, and the nutrient is 3kg/m3。
The dehydration performance of the sludge after the biological coagulation reaction is improved, and the sludge enters a diaphragm box type filter press to be subjected to sludge-water separation. Wherein the solid part is separated and filter-pressed into a semi-dried mud cake with the water content of less than 60 percent, and the semi-dried mud cake can be directly crushed and fermented at high temperature to prepare organic fertilizer because the semi-dried mud cake contains rich organic matters and has low water content, and the filtrate obtained by the solid-liquid separation of the sludge enters a water collecting tank.
The outlet of the water collecting tank is connected with the inlet of the biochemical tank, the biochemical tank adopts a two-stage A/O process, and each stage of A/O consists of 1 anoxic tank (A tank) and 1 aerobic tank (O tank). The anoxic tank is internally provided with a submersible stirrer for mixing, and the aerobic tank adopts a Roots blower for oxygen supply. The hydraulic retention time of the biochemical unit is 2d, wherein the retention time in 2 aerobic ponds is 18h respectively, and the retention time in an anoxic pond is 6h respectively. The dissolved oxygen concentration of the anoxic tank is maintained below 0.4mg/L, and the dissolved oxygen concentration of the aerobic tank is moderately maintained above 2 mg/L.
Because the biodegradability of the garbage percolate of the garbage incineration plant is good, and two-stage A/O biochemical treatment is adopted, the ammonia nitrogen is utilized to remove, and the removal of organic matters is also very beneficial.
And the muddy water mixture from the second-stage A/O tank enters a secondary sedimentation tank for sedimentation to obtain effluent, supernatant is discharged through a standard discharge port, and the treated effluent can be used for landscaping or car washing. Part of the precipitated sludge in the secondary sedimentation tank flows back to the aerobic tank, and the rest of the residual sludge is discharged to the biological coagulation reaction tank for biological coagulation reaction and then is subjected to filter pressing and dehydration treatment.
Claims (2)
1. A method for rapidly treating landfill leachate of a waste incineration plant is characterized by comprising the following steps: the biological flocculation and slag removal system comprises a biological flocculation and slag removal system and a biological oxidation system, wherein a biological flocculant is generated by using specific microorganism bacillus Bacillus TC16, and is polymerized with SS, COD and BOD in the landfill leachate to be precipitated through an adsorption bridging effect, a charge neutralization effect and a rolling sweeping effect, the landfill leachate and the specific microorganism generate a biological flocculation reaction, and the volume ratio of the landfill leachate to the specific microorganism liquid is 20: 1; firstly, a grid/grit chamber filters larger suspended matters in garbage percolate, filtrate enters an adjusting tank for water quantity and water quality adjustment and then enters a biological flocculation tank, wherein microbial liquid in a microbial culture tank is introduced into a bacteria liquid inlet pump and enters the biological flocculation tank, microbes generate a large amount of biological flocculant to perform flocculation precipitation reaction with SS and COD in the filtrate, SS and insoluble organic matters in the garbage percolate are precipitated and removed in the sedimentation tank, precipitated sludge enters a sludge collection tank, supernatant enters a water collection tank, sludge in the sludge collection tank enters a biological coagulation reaction tank, the sludge and specific microbial liquid are fully mixed under the action of a stirrer, the ratio of the input amount of the microbial liquid to the volume of the sludge is 1: 10, after the biological coagulation reaction, solid-liquid separation is performed by adopting a solid-liquid separation device, and separated filter residue is used as a raw material for producing organic fertilizer, the separated filtrate is treated by a further biological oxidation system to realize standard discharge; the biological coagulation deslagging system comprises a grid/grit chamber, an adjusting tank, a biological flocculation tank, a sedimentation tank, a sludge collecting tank, a microorganism culture tank, a biological coagulation reaction tank and a solid-liquid separation facility.
2. The method for rapidly treating landfill leachate of a waste incineration plant according to claim 1, wherein the method comprises the following steps: the biological oxidation system comprises a water collecting tank, a biochemical tank and a secondary sedimentation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050939.8A CN105502852B (en) | 2016-01-22 | 2016-01-22 | A kind of method of quick processing garbage burning factory landfill leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050939.8A CN105502852B (en) | 2016-01-22 | 2016-01-22 | A kind of method of quick processing garbage burning factory landfill leachate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105502852A CN105502852A (en) | 2016-04-20 |
| CN105502852B true CN105502852B (en) | 2018-06-19 |
Family
ID=55711235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610050939.8A Active CN105502852B (en) | 2016-01-22 | 2016-01-22 | A kind of method of quick processing garbage burning factory landfill leachate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105502852B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574398A (en) * | 2018-12-26 | 2019-04-05 | 南京贝克特环保科技有限公司 | A kind of depth deslagging method of highly filled biogas slurry |
| CN110734146A (en) * | 2019-11-18 | 2020-01-31 | 深圳市承亿生物科技有限公司 | landfill leachate treatment method |
| CN113087303A (en) * | 2021-04-12 | 2021-07-09 | 武汉合创柯林环保有限公司 | Treatment method of household garbage station leachate |
| CN116144556B (en) * | 2023-03-23 | 2024-07-05 | 内蒙古农业大学 | Bacillus for treating monosodium glutamate wastewater, treating agent, and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000073220A1 (en) * | 1999-05-29 | 2000-12-07 | Choi Joo Sik | A disposal method for pig ordure |
| CN1631820A (en) * | 2005-01-14 | 2005-06-29 | 北京大学 | Combined treatment method and system for landfill leachate |
| CN101225405A (en) * | 2008-01-21 | 2008-07-23 | 西安建筑科技大学 | Production method and application method of a kind of microbial flocculant |
| CN101475249A (en) * | 2009-01-19 | 2009-07-08 | 浙江理工大学 | Method for treating cultivation wastewater by using microbial flocculant and compound fertilizer obtained thereby |
| CN101544447A (en) * | 2009-04-30 | 2009-09-30 | 郑鉴忠 | Technique for purifying organic sewage through bio-precipitation and purification method |
-
2016
- 2016-01-22 CN CN201610050939.8A patent/CN105502852B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000073220A1 (en) * | 1999-05-29 | 2000-12-07 | Choi Joo Sik | A disposal method for pig ordure |
| CN1631820A (en) * | 2005-01-14 | 2005-06-29 | 北京大学 | Combined treatment method and system for landfill leachate |
| CN101225405A (en) * | 2008-01-21 | 2008-07-23 | 西安建筑科技大学 | Production method and application method of a kind of microbial flocculant |
| CN101475249A (en) * | 2009-01-19 | 2009-07-08 | 浙江理工大学 | Method for treating cultivation wastewater by using microbial flocculant and compound fertilizer obtained thereby |
| CN101544447A (en) * | 2009-04-30 | 2009-09-30 | 郑鉴忠 | Technique for purifying organic sewage through bio-precipitation and purification method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105502852A (en) | 2016-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106219871B (en) | Livestock and poultry breeding wastewater treatment method | |
| EP2528869B1 (en) | Method for reducing sludges produced by wastewater treatment facilities | |
| CN107010788B (en) | Large-scale pig farm cultivation wastewater treatment system and method | |
| CN102775019B (en) | Coupling type sewage de-phosphorization purification regeneration treatment technique | |
| CN111348748A (en) | Aerobic granular sludge sewage treatment process and equipment of two-stage sequencing batch reactor | |
| CN105417778B (en) | A kind of method of quick treatment scale cattle farm waste waste water | |
| Zhou et al. | Pretreatment of pig manure liquid digestate for microalgae cultivation via innovative flocculation-biological contact oxidation approach | |
| CN108083597B (en) | Composite microbial liquid for treating anaerobic digestion sludge and novel bioleaching method | |
| Zhang et al. | Effects of biomass pyrolysis derived wood vinegar (WVG) on extracellular polymeric substances and performances of activated sludge | |
| CN105621783A (en) | Method for removing nitrogen and phosphorus in sewage with sequencing batch microalgae reactor | |
| Zheng et al. | Enhanced proteins and amino acids production based on ammonia nitrogen assimilation and sludge increment by the integration of bioadsorption with anaerobic-anoxic-oxic (AAO) process | |
| CN101468849A (en) | Method for rapidly cultivating aerobic particle sludge by load control technique | |
| CN105502852B (en) | A kind of method of quick processing garbage burning factory landfill leachate | |
| CN106145506A (en) | The apparatus and method of coal chemical industrial waste water Anammox coupling heterotrophic denitrification denitrogenation | |
| CN110183081A (en) | A kind of microorganism river bottom mud processing method | |
| CN105502802B (en) | A kind of method of quick treatment scale piggery waste waste water | |
| CN101054250A (en) | Technique for treating garbage percolate by combinated physicochemistry and organism bacterium | |
| CN107473370B (en) | Sewage treatment system and method combining membrane bioreactor and phosphorus recovery process | |
| CN105776751A (en) | Process for efficient separation of organic carbon source in sewage and energy development and utilization | |
| CN101781056A (en) | Treatment method of waste papermaking water | |
| CN105621806B (en) | A kind of biological coagulation oxidation technology of quick processing kitchen garbage, waste-water | |
| CN202089863U (en) | Rubbish leachate treatment system | |
| JP2024147654A (en) | Systems and methods for reducing sludge generation in wastewater treatment plants - Patents.com | |
| CN113480104A (en) | Sewage treatment system and method utilizing internal carbon source based on sludge fermentation | |
| CN102126813B (en) | System and process for treating oxytetracycline waste water by anaerobic bio-treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |