CN108483799B - Leachate treatment process for waste incineration power plant - Google Patents
Leachate treatment process for waste incineration power plant Download PDFInfo
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- CN108483799B CN108483799B CN201810242066.XA CN201810242066A CN108483799B CN 108483799 B CN108483799 B CN 108483799B CN 201810242066 A CN201810242066 A CN 201810242066A CN 108483799 B CN108483799 B CN 108483799B
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- 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
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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- 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
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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- 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
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- 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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a percolate treatment process of a refuse incineration power plant, which comprises the treatment processes of mixing regulation, composite precipitation, water quality equalization, biodegradation, solid-liquid separation, nanofiltration, reverse osmosis and the like, wherein a water quality equalization tank consists of a first water quality equalization tank and a second water quality equalization tank which are mutually standby, the speed of percolate treatment can be accelerated, a standby pipeline connected with a composite precipitation tank is arranged in a refuse pit percolate filter tank, when water is sufficient and the COD concentration of percolate is low, the percolate in the refuse pit percolate filter tank can be directly guided into the composite precipitation tank for precipitation, the construction space of a percolate regulation tank can be saved, the construction cost is reduced, the combination of the water quality equalization tank and the composite precipitation tank can artificially control the quality and the treatment capacity of inlet water, the uninterrupted treatment of the percolate is ensured, the water quality fluctuation is small, and the operation of the whole treatment process is stabilized, the COD concentration can be regulated without adding an anaerobic reaction tank, the construction and operation cost is reduced, no odor and raw biogas are discharged, and the method is green and environment-friendly.
Description
Technical Field
The invention relates to treatment of high-concentration organic leachate, in particular to a treatment process of leachate of a waste incineration power plant.
Background
Along with the improvement of people's standard of living, the gathering of population leads to domestic waste's production volume to increase year by year, and people also are higher and higher to the requirement of environment, and rubbish is enclosed city the problem that country and government are waited to solve for the build of msw incineration power plant also becomes the trend, and wherein, the filtration liquid that rubbish produced needs, filtration liquid treatment plant handles, because several big characteristics of rubbish leachate: the COD and ammonia nitrogen concentration of the leachate are high, the heavy metal ion and salt content are high, the PH is low and is acidic, the seasonal change of the quantity of the leachate determines that the difficulty of treating the leachate and domestic sewage is high, the modes adopted by the current leachate treatment plant generally adopt adjustment modes such as leachate, anaerobic treatment, aerobic treatment, membrane treatment and the like, and the biochemical treatment process generally adopts an anaerobic-aerobic combined process, wherein an anaerobic reactor mainly functions to reduce the COD concentration and reduce the load of the aerobic treatment, but the anaerobic reactor can generate odor and generate biogas in the biochemical process, has great influence on the environment and damages subsequent filtering membranes.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the leachate treatment process of the waste incineration power plant, which is environment-friendly, low in application cost and capable of regulating and controlling the COD concentration without an anaerobic reactor.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a process for treating percolate from a waste incineration power plant comprises the following process steps: (1) inputting the common percolate of the landfill leachate pool and the sewage of the domestic sewage pool into a percolate adjusting pool for storage and mixed adjustment; (2) conveying the mixed percolate in the percolate adjusting tank to a composite sedimentation tank for separation and sedimentation, and discharging sediment impurities such as sludge and the like into a sludge treatment tank; (3) injecting the precipitated percolate into a water quality balancing tank, and introducing low-concentration water liquid in a supernatant tank for water quality balancing blending; (4) leading the balanced percolate into an external membrane biochemical reactor for biodegradation and further solid-liquid separation, and discharging separated sludge into a sludge treatment tank; (5) the sludge treatment tank centrifugally dehydrates the gathered sludge, and respectively discharges separated supernatant and dehydrated sludge to a supernatant liquid tank and a dehydrated sludge tank; (6) and after the degraded percolate is sequentially filtered and separated by the NF system and the RO system, standard-reaching clear liquid is output, and concentrated solution separated by nanofiltration and reverse osmosis is gathered in a concentrated hot tank and then is discharged to a garbage pit.
And the landfill leachate tank is provided with a standby pipeline for connecting the composite sedimentation tank.
The water quality equalizing tank is composed of a first water quality equalizing tank and a second water quality equalizing tank which are mutually standby.
The volume of the percolate adjusting tank is 20000m3～30000m3。
The balance blending C/N of the water quality equalizing tank is 4-7: 1, and the COD concentration is 15000-6000 mg/L.
The NF system has a membrane pore size of 0.95 nm.
The sludge reflux ratio of the external membrane biochemical reactor is 4: 1.
The invention has the beneficial effects that: the water quality equalizing tank of the invention is composed of a first water quality equalizing tank and a second water quality equalizing tank which are mutually spare, can accelerate the processing speed of percolate, the garbage pit percolate tank is provided with a spare pipeline connected with a composite sedimentation tank, when the water is sufficient and the COD concentration of the percolate is low, the percolate of the garbage pit percolate tank can be directly guided into the composite sedimentation tank for sedimentation, the construction space of a percolate adjusting tank can be saved, the construction cost is reduced, the combination of the water quality equalizing tank and the composite sedimentation tank can artificially control the quality and the processing amount of inlet water, ensures that the percolate is uninterruptedly processed and has small water quality fluctuation, plays a stable role in the operation of the whole set of processing technology, can reduce the damage of the percolate to the subsequent NF system and RO system filtering membrane, can regulate and control the concentration of the water quality equalizing tank without adding an anaerobic reaction tank, and avoids the frequent replacement of an anaerobic reactor due to the service life of one or two, the construction and operation cost is reduced, the repeated construction of a biogas collection and torch combustion device can be reduced, no odor and raw biogas discharge are generated, and the method is green and environment-friendly.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
Referring to fig. 1, a leachate treatment process for a waste incineration power plant comprises the following process steps:
1. inputting common percolate of a landfill leachate pool and sewage of a domestic sewage pool into a percolate adjusting pool for storage and mixed adjustment; the volume of the percolate adjusting tank is 20000m 3-30000 m3, and the percolate adjusting tank can be used as an accident emergency tank and a storage tank for percolate and slag landfill leaked or other sewage.
2. Conveying the mixed percolate in the percolate adjusting tank to a composite sedimentation tank for separation and sedimentation, and discharging sludge sediment impurities into a sludge treatment tank; the landfill pit leachate pond is provided with a standby pipeline for connecting the composite sedimentation tank, in a rainwater season, the water in the landfill pit leachate pond is sufficient, the COD concentration is low, leachate in the landfill pit leachate pond can be directly guided into the composite sedimentation tank for sedimentation, the construction space of the leachate adjusting tank can be saved, and the construction cost is reduced.
3. Injecting the precipitated percolate into a water quality balancing tank, and introducing low-concentration water liquid in a supernatant tank for water quality balancing blending; the water quality equalizing tank is composed of a first water quality equalizing tank and a second water quality equalizing tank which are mutually spare, high-concentration percolate enters the first water quality equalizing tank or the second water quality equalizing tank which is empty, a certain amount of low-concentration supernatant is added and mixed, the prepared percolate is used as spare equalizing water, the C/N of balanced blending is 4-7: 1, the COD concentration is 15000-6000mg/L, and the spare equalizing water can be directly used after the equalizing liquid of the water in the other equalizing tank is used.
4. Leading the balanced percolate into an external membrane biochemical reactor for biodegradation and further solid-liquid separation, and discharging separated sludge into a sludge treatment pool; the sludge reflux ratio of the external membrane biochemical reactor is 4: 1.
5. The sludge treatment tank centrifugally dewaters the gathered sludge, and respectively discharges separated supernatant and dewatered sludge into a supernatant liquid tank and a dewatered sludge tank; ensuring maximum utilization of the sludge.
6. Degraded leachate is sequentially filtered and separated by an NF system and an RO system, standard-reaching clear liquid is output, concentrated liquid separated by nanofiltration and reverse osmosis is gathered in a concentrated hot tank and then is discharged into a garbage pit, and the membrane aperture size of the NF system is 0.95 nanometer, so that the purity of the standard-reaching clear liquid is ensured.
According to the invention, COD concentration regulation and control are carried out through the water quality balancing tank, an anaerobic reaction tank is not required to be added, frequent replacement of the anaerobic reactor due to one or two years of service life is avoided, construction and operation cost is reduced, repeated construction of a biogas collection and torch combustion device can be reduced, odor and raw biogas discharge are avoided, and the method is green and environment-friendly.
The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.
Claims (4)
1. A process for treating percolate from a waste incineration power plant is characterized by comprising the following process steps:
(1) inputting the common percolate of the landfill leachate pool and the sewage of the domestic sewage pool into a percolate adjusting pool for storage and mixed adjustment;
(2) conveying the mixed percolate in the percolate adjusting tank to a composite sedimentation tank for separation and sedimentation, and discharging sludge into a sludge treatment tank;
(3) injecting the precipitated percolate into a water quality balancing tank, introducing low-concentration water liquid in a supernatant tank for water quality balancing blending, wherein the water quality balancing tank consists of a first water quality balancing tank and a second water quality balancing tank which are mutually spare;
(4) leading the balanced percolate into an external membrane biochemical reactor for biodegradation and further solid-liquid separation, and discharging separated sludge into a sludge treatment tank;
(5) the sludge treatment tank centrifugally dehydrates the gathered sludge, and respectively discharges separated supernatant and dehydrated sludge to a supernatant liquid tank and a dehydrated sludge tank;
(6) the degraded percolate is sequentially filtered and separated by an NF system and an RO system, and then a clear liquid reaching the standard is output, and concentrated solution separated by nanofiltration and reverse osmosis is gathered in a concentrated solution pool and then is discharged to a garbage pit;
and the landfill leachate tank is provided with a standby pipeline for connecting the composite sedimentation tank.
2. The leachate treatment process in a waste incineration power plant as set forth in claim 1, wherein the volume of the leachate adjusting tank is 20000m3～30000m3。
3. The landfill leachate treatment process of claim 1, wherein the NF system has a membrane pore size of 0.95 nm.
4. The leachate treatment process for a waste incineration power plant according to claim 1, wherein the sludge reflux ratio of the external membrane biochemical reactor is 4: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810242066.XA CN108483799B (en) | 2018-03-22 | 2018-03-22 | Leachate treatment process for waste incineration power plant |
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| CN201810242066.XA CN108483799B (en) | 2018-03-22 | 2018-03-22 | Leachate treatment process for waste incineration power plant |
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| CN108483799B true CN108483799B (en) | 2021-02-26 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060038097A (en) * | 2004-10-29 | 2006-05-03 | 주식회사 새 한 | Apparatus for leachate treatment by mbr and electro-oxidizer |
| CN101723552A (en) * | 2009-12-07 | 2010-06-09 | 广州大学 | Treatment method of garbage leachate |
| CN102190409A (en) * | 2011-04-18 | 2011-09-21 | 深圳市能源环保有限公司 | Garbage leachate treatment system |
| CN102249480A (en) * | 2011-05-12 | 2011-11-23 | 中国科学院生态环境研究中心 | System and operating method for treating rubbish leachate and urban household sewage in combined way |
| CN102351382A (en) * | 2011-09-06 | 2012-02-15 | 北京昊业怡生科技有限公司 | Combined treatment method of leachate and excrement wastewater |
| CN103708675A (en) * | 2013-12-13 | 2014-04-09 | 广东省环境科学研究院 | Landfill leachate treatment method based on high-frequency vibration membrane |
| CN104445747A (en) * | 2014-12-24 | 2015-03-25 | 中国第一重型机械股份公司 | Comprehensive wastewater reuse treatment method for waste incineration power plant |
| CN105347616A (en) * | 2015-11-12 | 2016-02-24 | 天津晟瑞通市政工程有限公司 | Garbage leachate treatment system and process |
| CN107200440A (en) * | 2017-07-05 | 2017-09-26 | 佛山市银禾企业管理咨询有限公司 | A kind of leachate processing method in power plant of burning away the refuse |
| CN207002512U (en) * | 2017-06-04 | 2018-02-13 | 江苏沃尔特环保有限公司 | A kind of New-type refuse vehicle percolation liquid treating system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2939406A1 (en) * | 2015-08-20 | 2017-02-20 | Blumetric Environmental Inc. | Wastewater treatment system |
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- 2018-03-22 CN CN201810242066.XA patent/CN108483799B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060038097A (en) * | 2004-10-29 | 2006-05-03 | 주식회사 새 한 | Apparatus for leachate treatment by mbr and electro-oxidizer |
| CN101723552A (en) * | 2009-12-07 | 2010-06-09 | 广州大学 | Treatment method of garbage leachate |
| CN102190409A (en) * | 2011-04-18 | 2011-09-21 | 深圳市能源环保有限公司 | Garbage leachate treatment system |
| CN102249480A (en) * | 2011-05-12 | 2011-11-23 | 中国科学院生态环境研究中心 | System and operating method for treating rubbish leachate and urban household sewage in combined way |
| CN102351382A (en) * | 2011-09-06 | 2012-02-15 | 北京昊业怡生科技有限公司 | Combined treatment method of leachate and excrement wastewater |
| CN103708675A (en) * | 2013-12-13 | 2014-04-09 | 广东省环境科学研究院 | Landfill leachate treatment method based on high-frequency vibration membrane |
| CN104445747A (en) * | 2014-12-24 | 2015-03-25 | 中国第一重型机械股份公司 | Comprehensive wastewater reuse treatment method for waste incineration power plant |
| CN105347616A (en) * | 2015-11-12 | 2016-02-24 | 天津晟瑞通市政工程有限公司 | Garbage leachate treatment system and process |
| CN207002512U (en) * | 2017-06-04 | 2018-02-13 | 江苏沃尔特环保有限公司 | A kind of New-type refuse vehicle percolation liquid treating system |
| CN107200440A (en) * | 2017-07-05 | 2017-09-26 | 佛山市银禾企业管理咨询有限公司 | A kind of leachate processing method in power plant of burning away the refuse |
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| CN108483799A (en) | 2018-09-04 |
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