CN103848536A - Method for processing house refuse leachate - Google Patents
Method for processing house refuse leachate Download PDFInfo
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- CN103848536A CN103848536A CN201210496422.3A CN201210496422A CN103848536A CN 103848536 A CN103848536 A CN 103848536A CN 201210496422 A CN201210496422 A CN 201210496422A CN 103848536 A CN103848536 A CN 103848536A
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Abstract
The invention provides a method for processing a house refuse leachate, which comprises the following steps: introducing the leachate in an adjusting tank for diluting; processing the diluted waste water through a membrane bioreactor technology, simultaneously removing bacteria, virus, ammonia nitrogen, heavy metal and difficultly-degraded organic matters; deeply processing the processed waste water through a reverse osmosis technology, removing heavy metal and micro-molecule organic matters; monitoring the processed drainage, and discharging if the processed drainage is qualified; or continuously processing the processed drainage after backflow to the adjusting tank if the processed drainage is unqualified.
Description
Technical field
The present invention relates to offal treatment field, relate in particular to one way of life rubbish burn or landfill disposal process in the treatment process of the percolate that produces.
Background technology
Along with the raising of socioeconomic development and resident living level, the output of municipal wastes grows with each passing day, and the disposal of municipal wastes becomes a great problem of modern metropolitan cities.The mode of refuse treatment is at present mainly burning disposal and landfill disposal.No matter adopt that processing mode, all can have the generation of garbage leachate.
Percolate mainly contains following characteristics: (1) leachate quality is very complicated, not only contain oxygen consumption organic pollutant, also contain each metalloid and nutrient for plants (ammonia nitrogen etc.), if industrial sector uses refuse landfill, in percolate, also have poisonous and harmful organic pollutant; (2) COD and BOD concentration are high, reach as high as several ten thousand, far away higher than municipal effluent; (3) in percolate, organic pollutant category is many, wherein has and is difficult to the non-chlorination aromatics such as biodegradable naphthalene, phenanthrene, chlorination aromatics, phosphoric acid ester, phthalic ester, phenolic compound and amino benzenes compounds etc.; (4) in percolate, contain 10 many kinds of metal ions, heavy metal ion wherein can produce severe inhibition effect to biological treatment process; (5) ammonia-nitrogen content is high, and C/N is out of proportion, brings certain difficulty to biological treatment.
The treatment process of percolate comprises physico-chemical processes and biological process.Physico-chemical processes mainly contains the several different methods such as charcoal absorption, chemical precipitation, density separation, chemical oxidation, chemical reduction, ion-exchange, film dialysis, air lift and wet oxidation process, in the time that COD is 2000 ~ 4000mg/L, the COD clearance of physical chemistry method can reach 50% ~ 87%.Compare with biological treatment, the impact that is not subject to water quality and quantity variation is processed in materialization, and effluent quality is more stable, especially to BOD
5/ COD ratio lower (0.07 ~ 0.20) is difficult to the percolate of biological treatment, has good treatment effect.But physical chemistry method processing cost is higher, be unsuitable for the processing of big yield percolate, therefore percolate is mainly to adopt biological process at present.Biological process is divided into aerobe processing, anaerobic biological treatment and the combination of the two.Aerobic treatment comprises activated sludge process, aeration oxidation pond, the aerobic stabilization pool, blodisc and trickling filter etc.Anaerobic treatment comprises upward flow Sludge Bed, anaerobic immobilized bio-reactor, mixing reactor and anaerobism stabilization pond.
Summary of the invention
The object of the present invention is to provide the percolate producing in one way of life garbage processing procedure to obtain treatment process.Adopt the membrane bioreactor technique of being combined with reverse osmosis, reach the object of percolate advanced treatment.
For achieving the above object, the present invention adopts following technical scheme:
Consumer waste infiltration liquid treatment process, comprises the following steps:
(1) percolate enters equalizing tank and dilutes;
(2) waste water after dilution is processed through membrane biological reactor process, removes bacterium, virus, ammonia nitrogen, heavy metal and hardly degraded organic substance simultaneously;
(3) through step (2) waste water after treatment through reverse osmosis process advanced treatment, further removal heavy metal and small organic molecule;
(4) to step (3), draining after treatment is monitored, qualified discharge; The defective equalizing tank that is back to continues to process.
In technical scheme provided by the invention, the described membrane biological reactor process of step (2) adopts solid-liquid separating type film-bioreactor.
In technical scheme provided by the invention, waste water also passes through Air Exposure before entering the described membrane biological reactor process of step (2).
In traditional biologic treating technique, mud-water separation completes by action of gravity in second pond, and its separation efficiency depends on the settling property of active sludge, and settleability is better, and mud-water separation efficiency is higher.And the settleability of mud depends on the operation conditions of aeration tank, improve the strictly operational condition of control aeration tank of sludge settling, this has limited the use of traditional biological treatment process.Due to the requirement of second pond solid-liquid separation, the mud of aeration tank can not maintain higher concentration, thereby has limited biochemical reaction rate.Hydraulic detention time and sludge age interdepend, and improve volumetric loading and often form contradiction with reduction sludge loading.And the present invention adopt membrane biological reactor process not only treatment effect is good, can under high volumetric loading, low sludge loading, move, excess sludge production low (can realize in theory zero sludge discharge), has reduced sludge treatment expense; And because microorganism is dammed in bio-reactor completely, thereby be conducive to breed, microorganism is as the growth of holding back of nitrobacteria slowly, system nitrification efficiency is improved.Meanwhile, the hydraulic detention time of the organism that can increase some difficult degradations in system, is conducive to the raising of hardly degraded organic substance degradation efficiency.
Above-mentioned waste water after treatment carries out advanced treatment via reverse osmosis process again, makes draining water quality reach the standard of national security discharge.Sub-standard waste water refluxes and continues to process.
Embodiment
The following examples can make the present invention of those of ordinary skill in the art's comprehend, but do not limit the present invention in any way.
Embodiment 1
3. consumer waste infiltration liquid treatment process, is characterized in that comprising the following steps:
(1) percolate enters equalizing tank and dilutes, and the waste water after dilution carries out Air Exposure through aeration tank;
(2) waste water after dilution is processed through solid-liquid separating type film-bioreactor, removes bacterium, virus, ammonia nitrogen, heavy metal and hardly degraded organic substance simultaneously;
(3) through step (2) waste water after treatment through reverse osmosis process advanced treatment, further removal heavy metal and small organic molecule;
(4) to step (3), draining after treatment is monitored, qualified discharge; The defective equalizing tank that is back to continues to process.
Claims (3)
1. consumer waste infiltration liquid treatment process, is characterized in that comprising the following steps:
(1) percolate enters equalizing tank and dilutes;
(2) waste water after dilution is processed through membrane biological reactor process, removes bacterium, virus, ammonia nitrogen, heavy metal and hardly degraded organic substance simultaneously;
(3) through step (2) waste water after treatment through reverse osmosis process advanced treatment, further removal heavy metal and small organic molecule;
(4) to step (3), draining after treatment is monitored, qualified discharge; The defective equalizing tank that is back to continues to process.
2. method according to claim 1, is characterized in that: the described membrane biological reactor process of step (2) adopts solid-liquid separating type film-bioreactor.
3. method according to claim 1, is characterized in that: waste water also passes through Air Exposure before entering the described membrane biological reactor process of step (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496422.3A CN103848536A (en) | 2012-11-28 | 2012-11-28 | Method for processing house refuse leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496422.3A CN103848536A (en) | 2012-11-28 | 2012-11-28 | Method for processing house refuse leachate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103848536A true CN103848536A (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210496422.3A Pending CN103848536A (en) | 2012-11-28 | 2012-11-28 | Method for processing house refuse leachate |
Country Status (1)
| Country | Link |
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| CN (1) | CN103848536A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975640A (en) * | 2018-09-27 | 2018-12-11 | 山东理工大学 | A kind of high-efficient treatment method of rubbish leachate |
| CN108975641A (en) * | 2018-09-27 | 2018-12-11 | 山东理工大学 | A kind of processing method of rubbish leachate |
-
2012
- 2012-11-28 CN CN201210496422.3A patent/CN103848536A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975640A (en) * | 2018-09-27 | 2018-12-11 | 山东理工大学 | A kind of high-efficient treatment method of rubbish leachate |
| CN108975641A (en) * | 2018-09-27 | 2018-12-11 | 山东理工大学 | A kind of processing method of rubbish leachate |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |