CN105016574A - Method for processing garbage filtrate - Google Patents
Method for processing garbage filtrate Download PDFInfo
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- CN105016574A CN105016574A CN201510380221.0A CN201510380221A CN105016574A CN 105016574 A CN105016574 A CN 105016574A CN 201510380221 A CN201510380221 A CN 201510380221A CN 105016574 A CN105016574 A CN 105016574A
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- leachate
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Abstract
The invention relates to a method for processing a garbage filtrate, which comprises the following steps: 1) performing a pretreatment technology so as to remove a suspended matter and a colloid substance for standby; 2)filtering a garbage leachate and introducing into a homogenizing pool, adjusting acid-base value in the homogenizing pool, employing recirculation water for diluting, stirring and homogenizing; 3)introducing an effluent in the homogenizing pool into a two-phase anaerobic biochemistry system, performing biochemical degradation on a highly concentrated organic matter in the garbage leachate; 4)performing low energy consumption MVR evaporative concentration treatment on the degraded garbage filtrate, performing nitrogen stripping and MBR biological treatment; and 5)adding a proper amount of sodium chloride in the processed concentrated solution, and adding into an electrolysis bath for catalytic electrolysis under certain condition, wherein the garbage leachate after catalytic electrolysis is the drainage which can reach a discharge standard. The method can effectively process the high density organic matter and ammonia nitrogen pollutant-containing garbage leachate, the effluent can reach a nationally-prescribed discharge standard, and the problem of nanofiltration concentrate biochemical degradation can be solved.
Description
Technical field
The present invention relates to a kind of leachate processing technology field, be specifically related to a kind of method of leachate process.
Background technology
Along with the quickening of Chinese Urbanization pace of construction, the growth of population and the raising of living standards of the people, domestic waste is also growing.At present, the method for waste treatment and disposal mainly comprises garbage loading embeading, composting process, burning method etc., and burning method is relative to traditional garbage loading embeading, composting process, because having the advantage of the aspects such as minimizing, innoxious, resource utilization, obtains good development.
Garbage loading embeading and garbage power are two kinds of modes to refuse treatment, but a large amount of percolates can be produced in refuse landfill and refuse-burning plant, this is a kind of containing high pollution thing, the waste water of high-enriched organics, if do not dealt carefully with, severe contamination can be caused to the water body of surrounding and soil, method process at present to the many employings of this percolate " biochemistry+membrane filtration ", but in membrane filtration processes, have the nanofiltration dope of 30% to be difficult to biochemical degradation, if turn back in original system, can accumulate more and more many, this is the difficult problem always perplexing landfill leachate treatment, also be a urgent problem.
Summary of the invention
The object of the present invention is to provide a kind of method of leachate process, in solution prior art, in percolate, nanofiltration dope is difficult to the problem of biochemical degradation.
For achieving the above object, present invention employs following technical scheme:
A method for leachate process, comprises the following steps:
(1) pretreatment technology, adopts coagulating kinetics, adds coagulating agent, coagulant aids in rubbish leachate, for subsequent use after removing suspended substance and colloidalmaterial;
(2) percolate enters balancing reservoir after filtering, in balancing reservoir, regulate potential of hydrogen, adopts recirculation water to dilute, and carries out stirring homogenizing; Described recirculation water comprises the supernatant liquor that ultrafiltration membrane system produces concentrated solution and the generation of scavenging solution, reverse osmosis scavenging solution and drying bed;
(3) balancing reservoir water outlet enters diphasic anaerobic biochemical system, comprises anaerobic acid-production phase reaction district, sulphate reducing bacteria zone of action and anaerobic methane production phase reaction district, carries out biochemical degradation to the high-enriched organics in percolate;
(4) process of less energy-consumption MVR evaporation concentration is carried out to the leachate after degraded, the water of condensation obtained after the process of less energy-consumption MVR evaporation concentration is entered nitrogen stripping and the process of MBR biological treatment process;
(5) concentrated solution will obtained after the process of less energy-consumption MVR evaporation concentration, add appropriate sodium-chlor, the chlorine ion concentration in percolate is made to be 15000mg/L, then percolate is joined the catalytic electrolysis carrying out certain condition in electrolyzer, the percolate after catalytic electrolysis is the draining of qualified discharge.
A nearly step, described less energy-consumption MVR evaporation concentration treating processes utilizes the hot gas produced in evaporation process, this hot gas is carried out boosting temperature raising by vapour compressor, and the hot gas after boosting temperature raising enters the thermal source of the pre-heating step before evaporation process as the thermal source in evaporation process process or rubbish leachate.
Further, the hot gas utilizing garbage burning factory to produce in described less energy-consumption MVR evaporation concentration treating processes is as the thermal source of rubbish leachate.
As shown from the above technical solution, the method of leachate process of the present invention, by adding coagulating agent in rubbish leachate, coagulant aids carries out coagulating sedimentation pre-treatment, remove suspended substance and colloidalmaterial, and pretreated leaching vat is carried out the steps such as less energy-consumption MVR evaporation concentration process, rubbish leachate containing the pollutent such as high-enriched organics, ammonia nitrogen effectively can be processed, water outlet reaches state emission standard, is difficult to the problem of biochemical degradation to solve in prior art nanofiltration dope in percolate.
Embodiment
The treatment process of the leachate treatment system of the present embodiment, comprises the following steps:
S1: pretreatment technology, adopts coagulating kinetics, adds coagulating agent, coagulant aids in rubbish leachate, for subsequent use after removing suspended substance and colloidalmaterial;
S2: percolate enters balancing reservoir after filtering, regulates potential of hydrogen in balancing reservoir, adopts recirculation water to dilute, and carries out stirring homogenizing; Described recirculation water comprises the supernatant liquor that ultrafiltration membrane system produces concentrated solution and the generation of scavenging solution, reverse osmosis scavenging solution and drying bed;
S3: balancing reservoir water outlet enters diphasic anaerobic biochemical system, comprises anaerobic acid-production phase reaction district, sulphate reducing bacteria zone of action and anaerobic methane production phase reaction district, carries out biochemical degradation to the high-enriched organics in percolate;
S4: the process of less energy-consumption MVR evaporation concentration is carried out to the leachate after degraded, the water of condensation obtained after the process of less energy-consumption MVR evaporation concentration is entered nitrogen stripping and the process of MBR biological treatment process;
Described less energy-consumption MVR evaporation concentration treating processes utilizes the hot gas produced in evaporation process, this hot gas is carried out boosting temperature raising by vapour compressor, and the hot gas after boosting temperature raising enters the thermal source of the pre-heating step before evaporation process as the thermal source in evaporation process process or rubbish leachate.
In order to improve the utilising efficiency of the energy, the hot gas utilizing garbage burning factory to produce in described less energy-consumption MVR evaporation concentration treating processes is as the thermal source of rubbish leachate.
S5: by the concentrated solution obtained after the process of less energy-consumption MVR evaporation concentration, add appropriate sodium-chlor, the chlorine ion concentration in percolate is made to be 15000mg/L, then percolate is joined the catalytic electrolysis carrying out certain condition in electrolyzer, the percolate after catalytic electrolysis is the draining of qualified discharge.
The method of leachate process of the present invention, by adding coagulating agent in rubbish leachate, coagulant aids carries out coagulating sedimentation pre-treatment, remove suspended substance and colloidalmaterial, and pretreated leaching vat is carried out the steps such as less energy-consumption MVR evaporation concentration process, rubbish leachate containing the pollutent such as high-enriched organics, ammonia nitrogen effectively can be processed, water outlet reaches state emission standard, is difficult to the problem of biochemical degradation to solve in prior art nanofiltration dope in percolate.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (3)
1. the method for a kind of leachate process according to claim 1, is characterized in that, comprise the following steps:
(1) pretreatment technology, adopts coagulating kinetics, adds coagulating agent, coagulant aids in rubbish leachate, for subsequent use after removing suspended substance and colloidalmaterial;
(2) percolate enters balancing reservoir after filtering, in balancing reservoir, regulate potential of hydrogen, adopts recirculation water to dilute, and carries out stirring homogenizing; Described recirculation water comprises the supernatant liquor that ultrafiltration membrane system produces concentrated solution and the generation of scavenging solution, reverse osmosis scavenging solution and drying bed;
(3) balancing reservoir water outlet enters diphasic anaerobic biochemical system, comprises anaerobic acid-production phase reaction district, sulphate reducing bacteria zone of action and anaerobic methane production phase reaction district, carries out biochemical degradation to the high-enriched organics in percolate;
(4) process of less energy-consumption MVR evaporation concentration is carried out to the leachate after degraded, the water of condensation obtained after the process of less energy-consumption MVR evaporation concentration is entered nitrogen stripping and the process of MBR biological treatment process;
(5) concentrated solution will obtained after the process of less energy-consumption MVR evaporation concentration, add appropriate sodium-chlor, the chlorine ion concentration in percolate is made to be 15000mg/L, then percolate is joined the catalytic electrolysis carrying out certain condition in electrolyzer, the percolate after catalytic electrolysis is the draining of qualified discharge.
2. according to the Garbage leachate disposal method described in claim 1, it is characterized in that, described less energy-consumption MVR evaporation concentration treating processes utilizes the hot gas produced in evaporation process, this hot gas is carried out boosting temperature raising by vapour compressor, and the hot gas after boosting temperature raising enters the thermal source of the pre-heating step before evaporation process as the thermal source in evaporation process process or rubbish leachate.
3. according to the Garbage leachate disposal method described in claim 1, it is characterized in that, the hot gas utilizing garbage burning factory to produce in described less energy-consumption MVR evaporation concentration treating processes is as the thermal source of rubbish leachate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380221.0A CN105016574A (en) | 2015-07-02 | 2015-07-02 | Method for processing garbage filtrate |
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| CN201510380221.0A CN105016574A (en) | 2015-07-02 | 2015-07-02 | Method for processing garbage filtrate |
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| CN201510380221.0A Pending CN105016574A (en) | 2015-07-02 | 2015-07-02 | Method for processing garbage filtrate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731692A (en) * | 2016-04-13 | 2016-07-06 | 湖北合加环境设备有限公司 | Pretreatment method suitable for evaporative crystallization of landfill leachate stock solution |
| CN106630395A (en) * | 2016-11-30 | 2017-05-10 | 中节能（沧州）环保能源有限公司 | Leachate sewage treatment method |
| CN106630416A (en) * | 2016-12-20 | 2017-05-10 | 浙江迪邦化工有限公司 | Treatment method for sodium hydrosulfite production wastewater |
| CN109231443A (en) * | 2018-09-25 | 2019-01-18 | 大连理工大学 | A kind of industrial wastewater anaerobism desulfurizer and technique based on magnetic iron ore reinforcing |
| CN109319928A (en) * | 2018-12-13 | 2019-02-12 | 北京舞鹤环境工程设计有限公司 | High Fat wastewater treatment device and technique |
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| CN101723538A (en) * | 2008-10-24 | 2010-06-09 | 曾华 | Process for treating landfill leachate |
| CN101967031A (en) * | 2010-10-20 | 2011-02-09 | 江苏兆盛环保集团有限公司 | Garbage percolate treatment method |
| CN103663834A (en) * | 2013-12-06 | 2014-03-26 | 南京万德斯环保科技有限公司 | Treating method for landfill leachate |
| CN103922543A (en) * | 2014-04-22 | 2014-07-16 | 东南大学 | Garbage leaching liquor treatment method |
| CN104355463A (en) * | 2014-10-13 | 2015-02-18 | 西安华陆环保设备有限公司 | Deep treatment method for landfill leachate |
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2015
- 2015-07-02 CN CN201510380221.0A patent/CN105016574A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101723538A (en) * | 2008-10-24 | 2010-06-09 | 曾华 | Process for treating landfill leachate |
| CN101967031A (en) * | 2010-10-20 | 2011-02-09 | 江苏兆盛环保集团有限公司 | Garbage percolate treatment method |
| CN103663834A (en) * | 2013-12-06 | 2014-03-26 | 南京万德斯环保科技有限公司 | Treating method for landfill leachate |
| CN103922543A (en) * | 2014-04-22 | 2014-07-16 | 东南大学 | Garbage leaching liquor treatment method |
| CN104355463A (en) * | 2014-10-13 | 2015-02-18 | 西安华陆环保设备有限公司 | Deep treatment method for landfill leachate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731692A (en) * | 2016-04-13 | 2016-07-06 | 湖北合加环境设备有限公司 | Pretreatment method suitable for evaporative crystallization of landfill leachate stock solution |
| CN106630395A (en) * | 2016-11-30 | 2017-05-10 | 中节能（沧州）环保能源有限公司 | Leachate sewage treatment method |
| CN106630416A (en) * | 2016-12-20 | 2017-05-10 | 浙江迪邦化工有限公司 | Treatment method for sodium hydrosulfite production wastewater |
| CN109231443A (en) * | 2018-09-25 | 2019-01-18 | 大连理工大学 | A kind of industrial wastewater anaerobism desulfurizer and technique based on magnetic iron ore reinforcing |
| CN109319928A (en) * | 2018-12-13 | 2019-02-12 | 北京舞鹤环境工程设计有限公司 | High Fat wastewater treatment device and technique |
| CN109319928B (en) * | 2018-12-13 | 2021-09-17 | 北京舞鹤环境工程设计有限公司 | High-grease wastewater treatment device and process |
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Application publication date: 20151104 |