CN103145292B - Technology and device for treating percolate from small rubbish transfer station - Google Patents
Technology and device for treating percolate from small rubbish transfer station Download PDFInfo
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- CN103145292B CN103145292B CN201210129450.1A CN201210129450A CN103145292B CN 103145292 B CN103145292 B CN 103145292B CN 201210129450 A CN201210129450 A CN 201210129450A CN 103145292 B CN103145292 B CN 103145292B
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Abstract
The invention relates to a technology and a device for treating a percolate from a small rubbish transfer station. The technology realizes combination of two-stage microelectrolysis physicochemical treatment and two-stage MBR biochemical treatment. The technology comprises the following steps of collecting a rubbish percolate by a collection tank, pumping the collected rubbish percolate into a first-stage iron-carbon micro-electrolysis reactor, pumping product water into a second-stage iron-carbon micro-electrolysis reactor, feeding product water obtained by physicochemical treatment orderly into an aeration reactor, a first-stage MBR reactor, an aeration settling pond and a second-stage MBR reactor, carrying out biochemical treatment, and pumping product water obtained by the biochemical treatment out of the device by a metering pump. The technology and the device have advantages of physicochemical and biochemical treatment and realize product water COD less than 1000mg/L in short treatment time. The device has a long service life, low investment and operation costs, and a small floor space, and is a novel rubbish percolate treatment device satisfying transfer station requirements.
Description
Technical field
The present invention relates to a kind of small-sized rubbish transhipment station percolate treatment unit, belong to water-treatment technology field.
Background technology
Percolate is a class high density, organic wastewater with difficult degradation thereby, is a great problem of domestic and international field of water treatment to its processing.Leachate in garbage transfer station belongs to one wherein, and it not only has the popular feature of percolate, treatment process more complicated.And its treatment facility is higher to space requirement, to reduce as much as possible the volume of refuse treatment plant facility, protection surrounding landscape environment.Traditional technology generally adopts biochemistry+film to process or simple biochemical process operational path, although above technique treatment effect still can, but there is many drawbacks: larger floor space, higher working cost, higher process operation requirement, traditional garbage leachate treatment process can not meet above requirement.Particularly the feature of transhipment station percolate determines that it is not suitable for adopting the operational path that space hold is large, the treatment time is long.Therefore, must develop a kind of problem for the treatment of system solution transhipment station percolate of small-sized efficient.
Summary of the invention
Object of the present invention is just to provide a kind of New-type refuse vehicle device for treating leachate that meets transhipment station feature, in pollutent minimizing, accomplishes long service life, investment and running cost is low, occupation of land less.
Target of the present invention is the process combination (micro-electrolysis+MBR) that adopts shorter treatment time, higher processing efficiency and lower running cost, give full play to the advantage of materialization processing and biochemical treatment, in the shorter treatment time, water outlet COD is reached in 1000mg/L.
A kind of small-sized rubbish transhipment station of the present invention percolate treatment unit, adopts the materialization district A of iron-carbon micro-electrolysis reactor formation and the biochemical zone B that MBR reactor forms, and is combined into integrated small leachate in garbage transfer station treatment unit.
Iron-carbon micro-electrolysis reactor materialization district A in the present invention comprises two-stage iron-carbon micro-electrolysis reactor, percolate stoste pumps into first step iron-carbon micro-electrolysis reactor 2 after being collected by collecting tank 1, and the water outlet of first step iron-carbon micro-electrolysis reactor 2 pumps into second stage iron-carbon micro-electrolysis reactor 3.
MBR reactor biochemical zone B in the present invention comprises preaeration tank 4, first step MBR reactor 5, aerated precipitation tank 6 and second stage MBR reactor 8, the water outlet of second stage iron-carbon micro-electrolysis reactor 3 pumps into preaeration tank 4, preaeration tank 4 is communicated with baffle for separating bottom with first step MBR reactor 5, the mud that preaeration tank 4 and first step MBR reactor 5 produce drains into device outside by stripping tube, and the water outlet of first step MBR reactor 5 is pumped to aerated precipitation tank 6 with volume pump 9.Aerated precipitation tank 6 has dosing pond 7, coagulant aids solution in dosing pond 7 pumps into aerated precipitation tank 6, the supernatant liquor of aerated precipitation tank 6 pumps into second stage MBR reactor 8 with volume pump 9, the mud that aerated precipitation tank 6 produces drains into device outside by stripping tube, the water outlet of second stage MBR reactor 8 drains into device outside with volume pump 9 suctions, and the mud that second stage MBR reactor 8 produces drains into device outside by stripping tube.
Tool of the present invention has the following advantages:
Conventional iron carbon micro-electrolysis pretreatment technology, need first reduce wastewater pH, then enters iron-carbon micro-electrolysis reaction, then the pH that raises provides ferro element in biochemical reaction condition and precipitation system, last spoil disposal; The present invention is directed to leachate in garbage transfer station water quality characteristics (pH=3～5), waste water directly enters reactor, reaction times (1～2h) by iron-carbon micro-electrolysis is controlled, progressively improve system pH, control by iron carbon packing ratio (50%～80%), make a part of ferro element enter next stage functional section.Compare traditional technology, the present invention has reduced the step that reduces pH, readjustment pH, precipitation, spoil disposal, greatly simple flow save cost.
Two-stage (or more than) iron-carbon micro-electrolysis adopts different aeration rates and iron carbon packing ratio, efficiently solves several problems: (1) iron carbon filler metal surface passivation that overstand causes in reactor and the problem that hardens; (2) under different aeration rates and pH condition, separate out the control problem of ferro element amount;
By controlling the aeration rate of pre-exposure gas area, dissolved oxygen (DO) content in effectively raising system avoids excessive the caused ferrous ion of tolerance be oxidized in advance and precipitate simultaneously.
In first step MBR reactor, utilize the biochemical section of the ferro element domestication active sludge producing in iron-carbon micro-electrolysis process, produce Biology-iron reinforcement sludge, make active sludge remove pollutent efficiency and improve 20%～30%, greatly reduce the load of rear class processing.
At settling tank aeration, separate out ferro element in solution, making it to become iron is suspended substance and throw out, produces throwing out simultaneously, improves sludge settling property and pollutants removal rate, has denitrogenation dephosphorizing function concurrently.
Because front order reaction is removed a large amount of pollutents, in the MBR reactor of the second stage, load is less, guarantees effluent characteristics, shortens the residence time.
Accompanying drawing explanation
Fig. 1 technique general block diagram of the present invention
Fig. 2 technical process of the present invention and equipment drawing
Wherein A materialization district, B biochemical zone
1 collecting tank, 2 first step iron-carbon micro-electrolysis reactors, 3 second stage iron-carbon micro-electrolysis reactors, 4 preaeration tanks,
5 first step MBR reactors, 6 aerated precipitation tanks, 7 dosing ponds, 8 second stage MBR reactors,
9 volume pumps, 10 air pumps.
Embodiment
The leachate in garbage transfer station that collecting tank 1 is collected directly pumps into first step iron-carbon micro-electrolysis reactor 2, and water outlet pumps into second stage iron-carbon micro-electrolysis reactor 3 again.Due to the water quality characteristics acidity more intense (pH=3～5) of leachate in garbage transfer station, in two-stage iron-carbon micro-electrolysis reaction process, need to control the reaction times of micro-electrolysis, the reaction times is controlled at 1-2h.Progressively improve system pH, the control of iron carbon packing ratio is 50%-80%, makes a part of ferro element enter next stage functional section.The water outlet of second stage iron-carbon micro-electrolysis reactor 3 enters preaeration tank 4, by controlling the aeration rate of preaeration tank 4, the control of two-stage iron-carbon micro-electrolysis gas-water ratio is 3: 1-5: 1, effectively dissolved oxygen (DO) content in raising system avoids excessive the caused ferrous ion of tolerance be oxidized in advance and precipitate simultaneously.
Described first step iron-carbon micro-electrolysis reactor (2) and second stage iron-carbon micro-electrolysis reactor (3) adopt bottom perforated pipe aeration, and iron-carbon micro-electrolysis gas-water ratio is 3: 1-5: 1, and media-filling rate 50%-80%, reaction times 1-2h.
Preaeration tank 4 and first step MBR reactor 5 use dividing plates separate bottom and are communicated with, in first step MBR reactor 5, utilize the biochemical section of the ferro element domestication active sludge producing in iron-carbon micro-electrolysis process, produce Biology-iron reinforcement sludge, make active sludge remove pollutent efficiency and improve 20%～30%, greatly reduce the load of rear class processing.
The water outlet of first step MBR reactor 5 is pumped to aerated precipitation tank 6 with volume pump 9.Aerated precipitation tank 6 has dosing pond 7, and the coagulant aids solution in dosing pond 7 pumps into aerated precipitation tank 6, and aerated precipitation tank 6 supernatant liquors pump into second stage MBR reactor 8 with volume pump 9.Regulating the gas-water ratio of MBR is 80: 1-150: in 1 scope, first step MBR dissolved oxygen is adjusted to 0.5-2mg/L, second stage MBR dissolved oxygen is adjusted to 3-5mg/L.
The mud that aerated precipitation tank 6 produces drains into device outside by stripping tube.The water outlet of second stage MBR reactor 8 drains into device outside with volume pump 9 suctions.Because front order reaction is removed a large amount of pollutents, in the MBR reactor of the second stage, load is less, guarantees effluent characteristics, shortens the residence time.Pollutants removal rate reaches 99%, and water outlet COD reaches in 1000mg/L.Actual motion shows, membrane module water outlet is normal, and whole system is stable.
Claims (3)
1. a small-sized rubbish transhipment station percolate treatment unit, comprise the materialization district of iron-carbon micro-electrolysis reactor formation and the biochemical zone that MBR reactor forms, it is characterized in that, the materialization district (A) that described iron-carbon micro-electrolysis reactor forms comprises two-stage iron-carbon micro-electrolysis reactor, percolate stoste pumps into first step iron-carbon micro-electrolysis reactor (2) after being collected by collecting tank (1), and the water outlet of first step iron-carbon micro-electrolysis reactor (2) pumps into second stage iron-carbon micro-electrolysis reactor (3), the biochemical zone (B) that described MBR reactor forms comprises preaeration tank (4), first step MBR reactor (5), aerated precipitation tank (6) and second stage MBR reactor (8), the water outlet of second stage iron-carbon micro-electrolysis reactor (3) pumps into preaeration tank (4), preaeration tank (4) is communicated with baffle for separating bottom with first step MBR reactor (5), the mud that preaeration tank (4) and first step MBR reactor (5) produce drains into device outside by stripping tube, the volume pump for water outlet (9) of first step MBR reactor (5) is pumped to aerated precipitation tank (6), aerated precipitation tank (6) has dosing pond (7), the coagulant aids solution in dosing pond (7) pumps into aerated precipitation tank (6), aerated precipitation tank (6) volume pump for supernatant liquor (9) pumps into second stage MBR reactor (8), the mud that aerated precipitation tank (6) produces drains into device outside by stripping tube, volume pump for water outlet (9) suction of second stage MBR reactor (8) drains into device outside, the mud that second stage MBR reactor (8) produces drains into device outside by stripping tube, described first step iron-carbon micro-electrolysis reactor (2) and second stage iron-carbon micro-electrolysis reactor (3) adopt bottom perforated pipe aeration, iron-carbon micro-electrolysis gas-water ratio is 3: 1-5: 1, media-filling rate 50%-80%, reaction times 1-2h.
2. a kind of small-sized rubbish transhipment station percolate treatment unit according to claim 1, it is characterized in that, described MBR reactor, first step MBR reactor (5) and second stage MBR reactor (8), all adopt aeration plate apart from bottom of device 400mm place aeration, MBR diaphragm adopts flat sheet membrane, the gas-water ratio of MBR is 80: 1-150: 1, first step MBR reactor (5) dissolved oxygen is adjusted to 0.5-2mg/L, and second stage MBR reactor (8) dissolved oxygen is adjusted to 3-5mg/L.
3. a kind of small-sized rubbish transhipment station percolate treatment unit according to claim 1, it is characterized in that, air pump (10) is simultaneously to two-stage iron-carbon micro-electrolysis reactor, two-stage MBR reactor and preaeration tank (4), aerated precipitation tank (6) air feed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210129450.1A CN103145292B (en) | 2012-04-28 | 2012-04-28 | Technology and device for treating percolate from small rubbish transfer station |
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| CN201210129450.1A CN103145292B (en) | 2012-04-28 | 2012-04-28 | Technology and device for treating percolate from small rubbish transfer station |
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| CN103145292B true CN103145292B (en) | 2014-05-14 |
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| CN106587509A (en) * | 2016-12-28 | 2017-04-26 | 苏州首创嘉净环保科技股份有限公司 | Garbage press filtrate treatment device |
| CN109748460A (en) * | 2019-03-01 | 2019-05-14 | 江苏天楹环保能源成套设备有限公司 | A kind of household garbage-compressing terminal diafiltration liquid processing device and technique |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020024253A (en) * | 2002-02-09 | 2002-03-29 | 서영진 | Treatment method for organic wastewater |
| CN201932982U (en) * | 2010-12-30 | 2011-08-17 | 厦门理工学院 | Combined system using micro-electrolysis-MBR (membrane bio-reactor) combined technology to treat printing and dyeing wastewater |
| CN202022821U (en) * | 2010-12-31 | 2011-11-02 | 上海轻工业研究所有限公司 | Equipment for treating ammonia nitrogen and COD (chemical oxygen demand) in wastewater of surface treatment |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020024253A (en) * | 2002-02-09 | 2002-03-29 | 서영진 | Treatment method for organic wastewater |
| CN201932982U (en) * | 2010-12-30 | 2011-08-17 | 厦门理工学院 | Combined system using micro-electrolysis-MBR (membrane bio-reactor) combined technology to treat printing and dyeing wastewater |
| CN202022821U (en) * | 2010-12-31 | 2011-11-02 | 上海轻工业研究所有限公司 | Equipment for treating ammonia nitrogen and COD (chemical oxygen demand) in wastewater of surface treatment |
Non-Patent Citations (2)
| Title |
|---|
| 内电解-MBR工艺处理制药废水的研究;迟娟 等;《工业水处理》;20060131;第26卷(第1期);第1.2、第2部分以及附图1 * |
| 迟娟 等.内电解-MBR工艺处理制药废水的研究.《工业水处理》.2006,第26卷(第1期),第1.2、第2部分以及附图1. |
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Owner name: SUZHOU SHOUCHUANG JIAJING ENVIRONMENTAL PROTECTION Free format text: FORMER NAME: SUZHOU GREINWORTH ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
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Address after: Suzhou City, Jiangsu province 215126 Industrial Park town Sheng Jiangpu Road No. 46 Patentee after: Jia Jing environmental protection Science and Technology Co., Ltd. is initiated in Suzhou Address before: Suzhou City, Jiangsu province 215126 Industrial Park town Sheng Jiangpu Road No. 46 Patentee before: Suzhou Greinworth Environmental Protection Technology Co., Ltd. |