CN1303016C - Deep treating method of sewage, such as percolate for urban refuse filling area - Google Patents
Deep treating method of sewage, such as percolate for urban refuse filling area Download PDFInfo
- Publication number
- CN1303016C CN1303016C CNB2004100175534A CN200410017553A CN1303016C CN 1303016 C CN1303016 C CN 1303016C CN B2004100175534 A CNB2004100175534 A CN B2004100175534A CN 200410017553 A CN200410017553 A CN 200410017553A CN 1303016 C CN1303016 C CN 1303016C
- Authority
- CN
- China
- Prior art keywords
- percolate
- electrolysis
- sewage
- molysite
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The present invention belongs to the technical field of environmental protection, particularly to a deep treatment method of sewage, such as the percolate of refuse landfill sites. The pH of the percolate is regulated by adding iron salt; an electrolyzer with an insoluble anode is used for electrolysis. The pH of the percolate after electrolysis is regulated to neutrality; iron ions are deposited. The deposited iron can be reused. After the treatment of the present invention, the concentration of supernatant codcr is less than 250 mg/L, which can reach the second-level discharge standard of the percolate; chroma is less than 10 times; the concentration of NH3-N is less than 10 mg/L, which can reach the first-level discharge standard of the percolate. The present invention reduces the energy consumption of the electrolysis greatly, and reaches the level of engineering application.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to the deep treatment method of sewage such as a kind of percolate from garbage filling field.
Background technology
The disposal of current municipal wastes is still based on sanitary landfill, the percolate that in refuse landfill, produces, be a kind of high pollution concentration, polycomponent organic waste water, it is its key character that water quality and quantity fluctuates widely, so the processing of percolate is a global difficult problem always.
At present, the processing of percolate has biological process, physico-chemical process and soil facture.Because percolate Pollutant levels height, from technology and economic two angle analysis of present stage, the method for single use materialization can not be dealt with problems, and the method for materialization can only be as pre-treatment and the means of strengthening handling.Biological process is still the main and important treatment process of percolate, and biological method commonly used has anaerobic process (anoxic method), aerobic method, biological pond method and recharges facture etc.In various biological treatments, anaerobic process (anoxic method) and aerobic method combination treatment are main processing units, and this technology is remarkable to organism in the percolate and ammonia nitrogen degradation effect.The method of recharging be exactly the percolate that will collect in landfill yard bottom with appropriate means from the covering layer of landfill site surface or the tectum bottom pour into landfill yard again, utilize landfill yard waste layer this " bacteria bed ", by the aerobic microbiological of upper soll layer, the Degradation of anaerobion in the landfill layer and absorption, ion-exchange and the sequestering action etc. of soil particle, percolate is purified.Advantages such as scrubbing is effective, but investment running cost is low that the method for recharging has.The water purification of soil facture swashs mechanism and the method for recharging is basic identical.Though the scrubbing effect of above technology or process combination is better, but still can't reach national relevant emission standards, therefore also must carry out advanced treatment it.
The advanced treatment of percolate generally should be selected from materialization or chemical method, and electrolytic process is exactly effectively to remove one of method of pollutent in the percolate.It is simple that this method has equipment, convenient management, advantages such as weatherproof not only can be directly with the direct mineralising of organism, can also not biodegradable organism be converted into biodegradable organism by the anodic oxygenizement, and then utilize biological process that organism is thoroughly removed.Achievement in research according to present stage, utilize electrolytic process to remove the energy consumption of the CODcr of 1kg in the percolate generally greater than 40kw.h, such power consumption limitations this method in actual application in engineering, the energy consumption problem that therefore how to reduce electrolytic process is the key that can this method be used widely.
Summary of the invention
The objective of the invention is to propose the deep treatment method of the sewage such as percolate from garbage filling field that a kind of energy consumption is low, efficient is high.
The advanced waste treatment method that the present invention proposes is a kind of " iron urge electrolytic process ", and concrete steps are to add ferrous salt or molysite in sewage, and to regulate pH be acidity, enters the electrolyzer of employing insoluble anode then, carries out electrolysis treatment; The electrolysis water outlet adds alkali and regulates pH near neutral, precipitates molysite, the supernatant liquor discharging; Molysite recycles.
In the inventive method, add ferrous salt or molysite, making its concentration is 500-2500mg/L.During electrolysis, its current density is 5-40mA/cm
2, electrolysis time 20-60 minute.
The inventive method can be used for the advanced treatment of percolated liquid in city refuse landfill, also can be used for the processing of other difficult-degradation organic sewage, is specially adapted to weave, the advanced treatment of waste water such as printing and dyeing, papermaking.Handle through the present invention, supernatant C ODcr concentration can reach the percolate secondary discharge standard less than 250mg/L; Colourity is less than 10 times, NH
3-N concentration can reach the percolate first discharge standard less than 10mg/L.The present invention greatly reduces electrolysis energy consumption, has reached the engineering application level.
Embodiment
To regulate pH to acid (the pH value is 2～4) scope with industrial spent pickle liquor through the percolate of pre-treatment (biological process or mineralized waste recharge), add FeCl
2, FeSO
4, FeCl
3Or Fe
2(SO
4)
3Deng, its concentration is respectively 500mg/L, 1000mg/L, 2000mg/L, 2500mg/L etc., uses respectively then and adopts the electrolyzer of insoluble anode to carry out electrolysis, and current density is got 5mA/cm respectively
2, 15mA/cm
2, 30mA/cm
2, 40mA/cm
2Deng, electrolysis 20-60 minute.Water outlet after the electrolysis is with industrial waste lye, NaOH, Ca (OH)
2Deng, to regulate pH and be neutral (the pH value is 6～7), supernatant liquor all can qualified discharge.The sedimentary molysite of adjusting pH uses industrial acid-washed waste liquid dissolving to return electrolysis reactor and utilizes again, avoids the problem of sludge dewatering.Because molysite can recycle in the process of disposing of sewage, and small loss is only arranged, so only need additional a small amount of molysite to get final product in the operational process.
Claims (3)
1, a kind of deep treatment method of percolate from garbage filling field sewage is characterized in that concrete steps are: add ferrous salt or molysite in sewage, and to regulate pH be acid, enter the electrolyzer of employing insoluble anode then, carry out electrolysis treatment; The electrolysis water outlet adds alkali and regulates pH near neutral, precipitates molysite, the supernatant liquor discharging; Molysite recycles.
2, the deep treatment method of sewage according to claim 1 is characterized in that the ferrous salt or the molysite that add, and its concentration is 500-2500mg/L.
3, the deep treatment method of sewage according to claim 1, when it is characterized in that electrolysis, current density is 5-40mA/cm
2, electrolysis time 20-60 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100175534A CN1303016C (en) | 2004-04-08 | 2004-04-08 | Deep treating method of sewage, such as percolate for urban refuse filling area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100175534A CN1303016C (en) | 2004-04-08 | 2004-04-08 | Deep treating method of sewage, such as percolate for urban refuse filling area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1579966A CN1579966A (en) | 2005-02-16 |
| CN1303016C true CN1303016C (en) | 2007-03-07 |
Family
ID=34581742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100175534A Expired - Fee Related CN1303016C (en) | 2004-04-08 | 2004-04-08 | Deep treating method of sewage, such as percolate for urban refuse filling area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1303016C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424494B (en) * | 2011-10-14 | 2013-04-10 | 朗照技术(北京)有限公司 | Method for treating garbage leachate by multistage electrolysis |
| CN105271477A (en) * | 2014-06-06 | 2016-01-27 | 蒋寿悟 | Deep treatment method of municipal waste landfill leachate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1351969A (en) * | 2000-11-07 | 2002-06-05 | 同济大学 | Purifying treatment method for diffusion water of garbage burying ground |
| CN1406883A (en) * | 2001-09-05 | 2003-04-02 | 武汉墨金经济发展有限公司 | Sewage treatment |
| JP2003230883A (en) * | 2002-02-08 | 2003-08-19 | Sanyo Electric Co Ltd | Wastewater treatment method and wastewater treatment system |
| CN1468810A (en) * | 2003-01-31 | 2004-01-21 | 同济大学 | Catalytic aluminium internally electrolyzing process of treating sewage |
-
2004
- 2004-04-08 CN CNB2004100175534A patent/CN1303016C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1351969A (en) * | 2000-11-07 | 2002-06-05 | 同济大学 | Purifying treatment method for diffusion water of garbage burying ground |
| CN1406883A (en) * | 2001-09-05 | 2003-04-02 | 武汉墨金经济发展有限公司 | Sewage treatment |
| JP2003230883A (en) * | 2002-02-08 | 2003-08-19 | Sanyo Electric Co Ltd | Wastewater treatment method and wastewater treatment system |
| CN1468810A (en) * | 2003-01-31 | 2004-01-21 | 同济大学 | Catalytic aluminium internally electrolyzing process of treating sewage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1579966A (en) | 2005-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101781066B (en) | Caffeine production wastewater treatment method | |
| CN101698550A (en) | Advanced treating method of landfill leachate | |
| CN102603132B (en) | Sludge treatment device based on electrolysis and pressure filtration technologies and method thereof | |
| CN101353196A (en) | Fur nitro dyeing wastewater treatment and cyclic utilization method | |
| CN102583879A (en) | High-concentration integrated chemical organic wastewater treatment process | |
| CN103723886B (en) | Cyclotetramethylenete-tranitramine production sewage treatment device and method | |
| CN101302053A (en) | Phosphorus removing method for municipal sewage plant | |
| CN110407412A (en) | It is a kind of to utilize high-power electron beam catalysis oxidation method for treating garbage percolation liquid | |
| Huang et al. | Recycling struvite pyrolysate obtained at negative pressure for ammonia nitrogen removal from landfill leachate | |
| CN103601313B (en) | Processing method of landfill leachate | |
| CN103373789A (en) | Treatment method of garbage leachate | |
| CN102040309A (en) | Combined treatment process for urban garbage percolate | |
| CN102531313A (en) | Method for treating sludge and promoting reduction of sludge by using ferrate | |
| CN107555724A (en) | A kind of handling process of high-concentration phosphorus-containing wastewater | |
| CN102491592A (en) | Method for treating concentrate produced by landfill leachate | |
| CN102358634A (en) | Deep treatment method for coking waste water | |
| CN104743734A (en) | Coupled sewage biological nitrogen and phosphorus removal and phosphate recovery method | |
| CN102295389A (en) | Industrial waste water treating technology | |
| CN105366871A (en) | Processing method of landfill leachate | |
| Dai et al. | Investigation of a sewage-integrated technology combining an expanded granular sludge bed (EGSB) and an electrochemical reactor in a pilot-scale plant | |
| CN1303016C (en) | Deep treating method of sewage, such as percolate for urban refuse filling area | |
| CN102992459A (en) | Method for treating wastewater by using flocculant | |
| CN103496817A (en) | Garbage leachate treatment method | |
| CN105084686A (en) | Sanitary production method for recycling residual activated sludge in sewage treatment plant | |
| CN101665307B (en) | Rubbish leachate treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070307 Termination date: 20100408 |