CN202808539U - Leachate treatment device for garbage incineration power plant - Google Patents
Leachate treatment device for garbage incineration power plant Download PDFInfo
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- CN202808539U CN202808539U CN2012204233882U CN201220423388U CN202808539U CN 202808539 U CN202808539 U CN 202808539U CN 2012204233882 U CN2012204233882 U CN 2012204233882U CN 201220423388 U CN201220423388 U CN 201220423388U CN 202808539 U CN202808539 U CN 202808539U
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Abstract
The utility model discloses a leachate treatment device for a garbage incineration power plant. The leachate treatment device comprises a raw water regulating pool, a coagulation reaction system, a primary UBF (Upflow Blanket Filter) reactor, a primary UBF water outlet intermediate pool, a secondary UBF reactor, a secondary UBF water outlet intermediate pool, a denitrification reaction pool, a nitrification reaction pool, a built-in MBR (Membrane Biological Reactor) system, a nanofiltration system and the like which are communicated with one another. According to the leachate treatment device for the garbage incineration power plant, UBF reactor intermediate pools are arranged behind the UBF reactors and used for carrying out sludge-water separation and backflow on outlet water of the UBF reactors, so that the concentration of sludge in the UBF reactors and treatment efficiency are guaranteed; the built-in MBR membrane assembly is arranged in a biochemical pool, so that the floor area is reduced, and the energy consumption is reduced; and garbage leachate is directly treated by using the combination of physicochemical, biochemical and membrane filtration technologies, so that the zero-emission recycling can be achieved.
Description
Technical field
The utility model relates to a kind of wastewater processing technology, particularly relates to a kind of garbage incinerating power plant percolate treatment unit.
Background technology
Percolate is a kind of unmanageable high concentrated organic wastewater, is characterized in that the water quality and quantity fluctuation is large, complicated component, and hazardous and noxious substances content is high.The improvement of percolate has become China's key subjects current and from now on quite over a long time environment pollution control, and (Shen is joyous, Jin Qiting, Cui Xiqin, Deng. up-flow anaerobic sludge blanket is processed the experimental study [J] of city garbage percolate. Techniques and Equipment for Environmental Pollution Control, 2004,5 (4): 1-5).Be characterized in that (1) water-quality constituents is complicated, existing high concentration organic contaminant also has the hazardous and noxious substances such as metal, inorganic salts, bacterium; (2) water quality, the water yield change greatly; (3) Pollutant levels are high, COD
CrConcentration is at 40000 ~ 80000mg/L, BOD
5Concentration is at 20000 ~ 40000mg/L; (4) nutritive props imbalance, for the general biochemical processing process that adopts of high concentrated organic wastewater, nutritive props imbalance, relatively COD in the garbage burning factory percolate
Cr, BOD
5Content, its phosphorus content is on the low side and ammonia-nitrogen content is higher, and ammonia nitrogen concentration is at 1000 ~ 2000mg/l; (5) biodegradability can be unstable.At present, the research of percolate processing new technology has become the popular research topic that domestic and international efforts at environmental protection person very is concerned about.
At present, the treatment technology of percolate can be divided into two large classes: biological process and physico-chemical processes.From numerous case studies, take in stripping-biochemical process as main technique percolate is processed to meeting relevant emission standard difficult, microorganism is very low to the degradation capability of contained difficult degradation organic matter in the percolate, and if the ammonia that stripping goes out does not reclaim, can bring secondary pollution.Physico-chemical processes mainly comprises reverse osmosis, nanofiltration, ultrafiltration, ultrasonic wave, photochemical catalysis, chemical oxidation, charcoal absorption, coagulating sedimentation etc.(Yang Feihuang, Yang Shunsheng, Cao Dongmei, etc. reverse osmosis and the application in city garbage percolate is processed thereof, 2007,33(3): 6-12).
At present, the treatment technology of domestic conventional garbage percolate has following 4 kinds:
(1) biochemical treatment
Adopting in recent years anaerobism---aerobic process biological treatment percolate is more, and the combination of biological process and physico-chemical process is the main direction of from now on percolate processing.But from the operation result of numerous application units, undesirable to the percolate treatment effect as main technique take biochemical treatment, microorganism is lower to the degradation capability of percolate middle and high concentration pollutent, and operation stability is difficult to be guaranteed.
(2) reverse osmosis method is processed
Reverse osmosis method is processed high pollution concentration, sewage high in salt is used widely, in the processing of percolation liquid of city life garbage landfill, also have service experience, at present domestic have company's trial introduction of foreign technology to apply to Chinese garbage burning factory percolate processing, and situation is unsatisfactory.
The refuse of refuse burning generating plant percolate is different from landfill percolate, and organism, suspension content are much higher, and film is seriously polluted, and the reverse osmosis concentration liquid measure is also than large many of landfill percolate.In general the concentration ratio of secondary RO system processing landfill percolate can reach 10%, and when applying to incineration leachate and processing, the experiment proved that concentration ratio is the highest only has 50%, and reverse osmosis membrane also very easily pollutes poisons, membrane module is changed frequent, and pretreatment system is more complex.
The processing of the concentrated solution that reverse osmosis method produces is a difficult point, the concentrated solution of landfill percolate can adopt and recharge the landfill district and process, utilize heavy metal and hardly degraded organic substance in the rubbish absorption degradation concentrated solution of landfill, and the concentrated solution that incineration leachate is processed generation with reverse osmosis method also has more than 50%, because the convenience that does not have landfill yard to recharge, it is too large again to return the spray incinerator water yield, and therefore the prospect with the membrane processing methods such as reverse osmosis processing percolate obtains restriction.The prerequisite that the membrane processing methods such as reverse osmosis are processed percolate is to solve the processing problem that film is processed concentrated solution.
(3) chemical oxidation treatment
Certain garbage burning factory once adopted Feton reagent oxidation+ammonia stripping+coagulating sedimentation+anaerobism+SBR+ClO
2Oxidation+active carbon absorption technology is processed percolate, this technique reality mainly is to rely on chemical oxidizing agent and charcoal absorption to remove pollutent, from operation result, water outlet can reach state three grade emissioning standard when dosing was normal, but working cost lacks using value economically up to more than 120 yuan/tons.
(4) other treatment process
Except above-mentioned treatment process, the technical study that the percolate that carries out is at present processed also comprises catalytic oxidation, wet oxidation process, electrooxidation method, photooxidation method etc., these oxidation style or because catalyzer is very easily poisoned or all can't enter the actual industrial stage because current consumption is too large etc.
The utility model content
The purpose of this utility model is to provide that a kind of processing efficiency is high, energy consumption is little, less investment, garbage incinerating power plant percolate treatment unit that floor space is little.
For achieving the above object, technical solution of the present utility model is:
The utility model is a kind of garbage incinerating power plant percolate treatment unit, and it comprises former water equalizing tank, coagulating system, one-level UBF reactor (composite anaerobic fluidized-bed reactor), one-level UBF reactor water outlet intermediate pool, secondary UBF reactor (composite anaerobic fluidized-bed reactor), secondary UBF reactor water outlet intermediate pool, anti-nitration reaction pond, nitration reaction pond, built-in MBR system (membrane bioreactor), nanofiltration system, clean water basin and sludge thickener, sludge dewatering system; Described former water equalizing tank, coagulating system, one-level UBF reactor (composite anaerobic fluidized-bed reactor), one-level UBF reactor water outlet intermediate pool, secondary UBF reactor (composite anaerobic fluidized-bed reactor), secondary UBF reactor water outlet intermediate pool, anti-nitration reaction pond, nitration reaction pond, built-in MBR system (membrane bioreactor), nanofiltration system, clean water basin connect successively by pipeline; Described coagulating system, one-level UBF reactor, secondary UBF reactor, nitration reaction pond, built-in MBR system connect sludge thickener by pipeline respectively, and sludge thickener connects sludge dewatering system by pipeline; Described one-level UBF reactor, one-level UBF reactor water outlet intermediate pool, secondary UBF reactor, secondary UBF reactor water outlet intermediate pool form the anaerobic reaction system.
Be provided with reflux line between described one-level UBF reactor and the one-level UBF reactor water outlet intermediate pool.
Be provided with reflux line between described secondary UBF reactor and the secondary UBF reactor water outlet intermediate pool.
Described anti-nitration reaction pond, nitration reaction are provided with reflux line between the pond.
Described coagulating system comprises coagulation reaction tank, coagulating settling tank, coagulating outlet sump, and coagulation reaction tank, coagulating settling tank, coagulating outlet sump connect successively by pipeline.
After adopting such scheme, because the utility model utilizes materialization, biochemistry, membrane filtration technique coupling that percolate is directly processed, can reach Zero-discharge reuse; Adopt the treatment process of materialization and biochemical processing process to compare with tradition, the utlity model has following remarkable advantage and effect:
1, is provided with mud-water separation and backflow after UBF reactor intermediate pool carries out the water outlet of UBF reactor behind the UBF reactor, guarantees sludge concentration and processing efficiency in the UBF reactor.
2, adopt built-in MBR membrane module to place in the biochemistry pool, thereby reduce floor space, reduce energy consumption.
3, waste water can reach the standard of production technique reuse after treatment, and producing water ratio is high, realizes the on-the-spot reuse of production technique of waste water, saves a large amount of water sources.
4, process waste water flow process weak point, efficient is high, the treatment facility less investment, and floor space is little.
5, the utility model processing method can realize discharged wastewater met the national standard, preserves the ecological environment, for the garbage incinerating power plant percolate has dealt with critical problem.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is a kind of garbage incinerating power plant percolate treatment unit, and it comprises former water equalizing tank 1, coagulating system 2, one-level UBF reactor (composite anaerobic fluidized-bed reactor) 3, one-level UBF reactor water outlet intermediate pool 4, secondary UBF reactor (composite anaerobic fluidized-bed reactor) 5, secondary UBF reactor water outlet intermediate pool 6, anti-nitration reaction pond 7, nitration reaction pond 8, built-in MBR system (membrane bioreactor) 9, nanofiltration system 10, clean water basin 11 and sludge thickener 12, sludge dewatering system 13.
Described former water equalizing tank 1, coagulating system 2, one-level UBF reactor (composite anaerobic fluidized-bed reactor) 3, one-level UBF reactor water outlet intermediate pool 4, secondary UBF reactor (composite anaerobic fluidized-bed reactor) 5, secondary UBF reactor water outlet intermediate pool 6, anti-nitration reaction pond 7, nitration reaction pond 8, built-in MBR system (membrane bioreactor) 9, nanofiltration system 10, clean water basin 11 connect successively by pipeline.Described coagulating system 2, one-level UBF reactor 3, secondary UBF reactor 5, nitration reaction pond 8, built-in MBR system 9 connect sludge thickener 12 by pipeline respectively, and sludge thickener 12 connects sludge dewatering system 13 by pipeline.
Described coagulating system 2 comprises coagulation reaction tank 21, coagulating settling tank 22, coagulating outlet sump 23, and coagulation reaction tank 21, coagulating settling tank 22, coagulating outlet sump 23 connect successively by pipeline.
Described built-in MBR system's 9 employing polypropylene hollow fiber dedicated film assemblies and MBR membrane module place in the biochemistry pool.
Described one-level UBF reactor 3, one-level UBF reactor water outlet intermediate pool 4, secondary UBF reactor 5, secondary UBF reactor water outlet intermediate pool 6 form anaerobic reaction system 90.
Principle of work of the present utility model:
At first through the former water equalizing tank 1 stabilizing water quality water yield; Suspended solids, impurity, heavy metal that water outlet is removed in the waste water by coagulating system 2; 2 water outlets of coagulating system enter one-level UBF reactor 3 and carry out the most of organic impurities of anaerobic biological processing removal, and one-level UBF reactor water outlet intermediate pool 4 mixed-liquor returns guarantee sludge concentration to one-level UBF reactor 3; 4 water outlets of one-level UBF reactor water outlet intermediate pool are further carried out anaerobic biological and are processed the most of organic impurities of removal to secondary UBF reactor 5, and secondary UBF reactor water outlet intermediate pool 6 mixed-liquor returns guarantee sludge concentration to secondary UBF reactor 5; 6 water outlets of secondary UBF reactor water outlet intermediate pool enter anti-nitration reaction pond 7, nitration reaction pond 8 is processed and carried out aerobic treatment and nitrated, anti-nitration reaction, further reduce organism and ammonia nitrogen in the waste water; Suspended matters such as holding back bacterium, colloid and solid particulate fully filters in built-in MBR system 9; 9 water outlets of built-in MBR system enter nanofiltration treatment system 10, further remove tiny organism and part metals ion, and water outlet reaches the miscellaneous water reuse standard, realize the on-the-spot reuse of technique; The concentrated solution of nanofiltration treatment system 10 is regularly gone back to coagulating system 2, remove most of divalence and polyvalent ion, and avoid producing biochemical system salt separating/enriching and the impact that brings, thereby the organic pollutant that anaerobic reactor is further degraded in the dope in the recycling native system can be realized zero release.Processed percolate, COD
CrConcentration is at 40000 ~ 80000mg/L, BOD
5Concentration is at 20000 ~ 40000mg/L, and ammonia nitrogen concentration is at 1000 ~ 2000mg/l.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, the equivalence of namely doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (5)
1. garbage incinerating power plant percolate treatment unit is characterized in that: it comprises former water equalizing tank, coagulating system, one-level UBF reactor, one-level UBF reactor water outlet intermediate pool, secondary UBF reactor, secondary UBF reactor water outlet intermediate pool, anti-nitration reaction pond, nitration reaction pond, built-in MBR system, nanofiltration system, clean water basin and sludge thickener, sludge dewatering system; Described former water equalizing tank, coagulating system, one-level UBF reactor, one-level UBF reactor water outlet intermediate pool, secondary UBF reactor, secondary UBF reactor water outlet intermediate pool, anti-nitration reaction pond, nitration reaction pond, built-in MBR system, nanofiltration system, clean water basin connect successively by pipeline; Described coagulating system, one-level UBF reactor, secondary UBF reactor, nitration reaction pond, built-in MBR system connect sludge thickener by pipeline respectively, and sludge thickener connects sludge dewatering system by pipeline; Described one-level UBF reactor, one-level UBF reactor water outlet intermediate pool, secondary UBF reactor, secondary UBF reactor water outlet intermediate pool form the anaerobic reaction system.
2. garbage incinerating power plant percolate treatment unit according to claim 2 is characterized in that: be provided with reflux line between described one-level UBF reactor and the one-level UBF reactor water outlet intermediate pool.
3. garbage incinerating power plant percolate treatment unit according to claim 1 is characterized in that: be provided with reflux line between described secondary UBF reactor and the secondary UBF reactor water outlet intermediate pool.
4. garbage incinerating power plant percolate treatment unit according to claim 1, it is characterized in that: described anti-nitration reaction pond, nitration reaction are provided with reflux line between the pond.
5. garbage incinerating power plant percolate treatment unit according to claim 1, it is characterized in that: described coagulating system comprises coagulation reaction tank, coagulating settling tank, coagulating outlet sump, and coagulation reaction tank, coagulating settling tank, coagulating outlet sump connect successively by pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012204233882U CN202808539U (en) | 2012-08-24 | 2012-08-24 | Leachate treatment device for garbage incineration power plant |
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| CN2012204233882U CN202808539U (en) | 2012-08-24 | 2012-08-24 | Leachate treatment device for garbage incineration power plant |
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| CN202808539U true CN202808539U (en) | 2013-03-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254122A (en) * | 2015-10-16 | 2016-01-20 | 成都中节能再生能源有限公司 | Treatment method of leachate of waste incineration power plant |
| CN108017222A (en) * | 2016-11-02 | 2018-05-11 | 中国环境保护集团有限公司 | The processing method and processing system of garbage burning factory percolate |
| CN108328853A (en) * | 2017-12-29 | 2018-07-27 | 海天世浦泰膜科技股份有限公司 | A kind of system that sewage disposal is carried out using plate membrane |
| CN110395847A (en) * | 2019-08-02 | 2019-11-01 | 宇创环保产业有限公司 | A kind of domestic garbage burning electricity generation clinker resource utilization Environmental Protection System |
-
2012
- 2012-08-24 CN CN2012204233882U patent/CN202808539U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254122A (en) * | 2015-10-16 | 2016-01-20 | 成都中节能再生能源有限公司 | Treatment method of leachate of waste incineration power plant |
| CN108017222A (en) * | 2016-11-02 | 2018-05-11 | 中国环境保护集团有限公司 | The processing method and processing system of garbage burning factory percolate |
| CN108328853A (en) * | 2017-12-29 | 2018-07-27 | 海天世浦泰膜科技股份有限公司 | A kind of system that sewage disposal is carried out using plate membrane |
| CN110395847A (en) * | 2019-08-02 | 2019-11-01 | 宇创环保产业有限公司 | A kind of domestic garbage burning electricity generation clinker resource utilization Environmental Protection System |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Ying Inventor after: Wang Dehong Inventor after: Zhang Chuanjian Inventor after: Zhou Jundang Inventor after: Ji Zhe Inventor after: Mao Zhongjian Inventor after: Wu Yanqin Inventor before: Li Ying Inventor before: Wang Dehong Inventor before: Zhang Chuanjian Inventor before: Zhou Jundang Inventor before: Ji Zhe Inventor before: Mao Zhongjian Inventor before: Wu Yanqin |
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| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
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| CX01 | Expiry of patent term |