CN101164919A - Deep treatment method for garbage percolate - Google Patents
Deep treatment method for garbage percolate Download PDFInfo
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- CN101164919A CN101164919A CNA2007100469372A CN200710046937A CN101164919A CN 101164919 A CN101164919 A CN 101164919A CN A2007100469372 A CNA2007100469372 A CN A2007100469372A CN 200710046937 A CN200710046937 A CN 200710046937A CN 101164919 A CN101164919 A CN 101164919A
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- percolate
- concentration
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- oxidation
- deep treatment
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Abstract
This invention relates to a method for deep treatment of the percolating liquor from garbage. First, the hydrogen peroxide or ozone is used for oxidizing the percolating liquor. The organic substances are degradation into the organic intermediate products containing carboxyl group, carbonyl group and hydroxyl group, then added are complexing agents containg ions of calcium or barium, which are reacted with said intermediate products. Finally, the liquor is proceeded by regulation of its pH value to alkalinity for precipitation, to achieve the deep treatment of the percolating liquid from garbage. This inventive method can reduce the volume of chemical oxidants, reducing the environmental pollution.
Description
Technical field
The present invention relates to a kind of advanced treating method of landfill leachate, be used for waste water treatment, belong to the environmental protection and energy saving technical field.
Background technology
Percolate is a kind of unmanageable organic waste water of high density, contains a large amount of organic pollutants, nitrogen, phosphorus and miscellaneous heavy metal class material in the percolate.Water quality characteristics is: (1) water quality complexity, not only contain miscellaneous organic pollutant, and also contain ammonia nitrogen and contents of many kinds of heavy metal ion (2) chemical oxygen demand COD, biochemical oxygen demand (BOD) BOD concentration height.The intractability of percolate is big.
At present, the leachate treatment technology of landfill yard application both at home and abroad mainly contains: the various array configurations of biologic treating technique, materialization treatment technology, membrane technology, soil treatment technology, evaporation process technology and above-mentioned technology etc.Biologic treating technique comprises that anaerobic biofilter (AF), upflow anaerobic sludge blanket reactor (UASB), anaerobic baffled reactor (ABR), activated sludge process, oxidation ditch, intermittent activated sludge process claim technology such as sequencing batch active sludge (SBR method), aeration oxidation pond again.Usually biological treatment and soil processing cost are low, and the percolate pollutent of handling is still higher, and the remaining COD of waste water can not satisfy the environment protection emission requirement of increasingly stringent between 300-2000mg/L.Membrane technology and evaporation process technical costs height are difficult to apply.
Chemical oxidization method can decompose the organism of difficult degradation in the percolate, thereby improves the bio-degradable of waste water.Oxygenant commonly used mainly contains hydrogen peroxide, ozone, chlorine and muriate.Be subject to people's attention owing to chemical oxidization method is easy and simple to handle.But because in the chemical oxidization method treating refuse percolate process, the incomplete oxidation product toxicity of generation can increase, the organism complete oxidation then needs the chemical agent amount big.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of advanced treating method of landfill leachate is provided, can effectively reduce the organic substance residues amount of water outlet, reduce the chemical oxidation dosing, reduce environmental pollution.
For realizing such purpose, in the technical scheme of the present invention, at first adopting hydrogen peroxide or ozone is oxygenant, join oxidizing reaction takes place in the percolate, make the organic matter degradation in the percolate generate the organic intermediate product that contains carboxyl, carbonyl, hydroxyl, the complexing agent and the organic intermediate product association reaction that add calcic or barium element then, and the pH value of regulating percolate makes percolate obtain deep purifying to the following precipitation of alkaline condition.
Method of the present invention is specially:
At the COD residual concentration is in the percolate of 300～2000mg/L, according to 100-1000g/m
3Concentration add hydrogen peroxide, or according to 10～300g/m
3Concentration feed ozone, carry out oxidizing reaction, the reaction times is controlled at 15min～24hr.Add 500～5000g/m in the percolate after oxidation
3Calcic or the complexing agent of barium element, and the pH value of percolate is adjusted to 8.5～11, remove throw out after, the COD of percolate can be reduced to below the 180mg/L.
The complexing agent of calcic of the present invention or barium element comprises CaO, Ca (OH)
2, Ba (OH)
2, CaCl
2, BaCl
2Deng.
Method of the present invention is simple, adopts the processing mode of chemical oxidation and complex-precipitation combination, and effective treating refuse percolate can reduce the organic substance residues amount of water outlet again, reduces the chemical oxidation dosing, the minimizing environmental pollution.
Embodiment
Below by specific embodiment technical scheme of the present invention is described further.
Embodiment 1
At the COD residual concentration is in the percolate of 300mg/L, according to 100g/m
3Concentration add H
2O
2Carry out oxidizing reaction, reacted 24 hours.Add 500g/m in the percolate after oxidation
3Ba (OH)
2, and the pH value of percolate is adjusted to 10, remove throw out after, the COD of percolate can be reduced to below the 160mg/L.
Embodiment 2
At the COD residual concentration is in the percolate of 2000mg/L, according to 300g/m
3Concentration feed O
3Reaction 120min carries out oxide treatment.Add 5000g/m in the percolate after oxidation
3Ca (OH)
2, and the pH value of percolate is adjusted to 11, percolate post precipitation COD can be reduced to 180mg/L.
Embodiment 3
At the COD residual concentration is in the percolate of 300mg/L, according to 10g/m
3Concentration feed ozone reaction 15min and carry out oxide treatment.Add 1000g/m in the percolate after oxidation
3CaO, and the pH value of percolate is adjusted to 8.5, percolate post precipitation COD can be reduced to 175mg/L.
Embodiment 4
At the COD residual concentration is in the percolate of 1000mg/L, according to 1000g/m
3Concentration add hydrogen peroxide, oxidation time is controlled at 20hr.Add 3000g/m in the percolate after oxidation
3CaCl
2, and the pH value of percolate is adjusted to 11, percolate post precipitation COD can be reduced to 160mg/L.
Embodiment 5
At the COD residual concentration is in the percolate of 500mg/L, according to 200g/m
3Concentration add hydrogen peroxide, oxidation time is controlled at 15hr.Add 3500g/m in the percolate after oxidation
3CaCl
2, and the pH value of percolate is adjusted to 10, percolate post precipitation COD can be reduced to 162mg/L.
Claims (2)
1. an advanced treating method of landfill leachate is characterized in that at the chemical oxygen demand COD residual concentration be in the percolate of 300～2000mg/L, according to 100-1000g/m
3Concentration add hydrogen peroxide, or according to 10～300g/m
3Concentration feed ozone, carry out oxidizing reaction, the reaction times is controlled at 15min～24hr; Add 500～5000g/m in the percolate after oxidation
3Calcic or the complexing agent of barium element, and the pH value of percolate is adjusted to 8.5～11, remove throw out after, the COD of percolate is reduced to below the 180mg/L.
2. according to the advanced treating method of landfill leachate of claim 1, the complexing agent that it is characterized in that described calcic or barium element is CaO, Ca (OH)
2, Ba (OH)
2, CaCl
2Or BaCl
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100469372A CN101164919A (en) | 2007-10-11 | 2007-10-11 | Deep treatment method for garbage percolate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100469372A CN101164919A (en) | 2007-10-11 | 2007-10-11 | Deep treatment method for garbage percolate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101164919A true CN101164919A (en) | 2008-04-23 |
Family
ID=39333804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100469372A Pending CN101164919A (en) | 2007-10-11 | 2007-10-11 | Deep treatment method for garbage percolate |
Country Status (1)
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|---|---|
| CN (1) | CN101164919A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826682A (en) * | 2012-09-04 | 2012-12-19 | 北京化工大学 | Treatment method for concentrated solution obtained by filtering landfill leachate film |
| CN105366785A (en) * | 2015-12-18 | 2016-03-02 | 北京伟创力科技有限公司 | Method for improving utilization efficiency of ozone and reducing COD of wastewater |
| CN110395796A (en) * | 2018-04-24 | 2019-11-01 | 上海交通大学 | High pass wind bio-trickling module reactor and high pass wind bio-trickling reaction system |
| CN111362520A (en) * | 2020-04-10 | 2020-07-03 | 广东自华科技有限公司 | Landfill leachate treatment system and method |
| CN111410336A (en) * | 2020-04-10 | 2020-07-14 | 广东自华科技有限公司 | Method and treatment process for precipitating and separating humic acid in landfill leachate |
-
2007
- 2007-10-11 CN CNA2007100469372A patent/CN101164919A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826682A (en) * | 2012-09-04 | 2012-12-19 | 北京化工大学 | Treatment method for concentrated solution obtained by filtering landfill leachate film |
| CN105366785A (en) * | 2015-12-18 | 2016-03-02 | 北京伟创力科技有限公司 | Method for improving utilization efficiency of ozone and reducing COD of wastewater |
| CN110395796A (en) * | 2018-04-24 | 2019-11-01 | 上海交通大学 | High pass wind bio-trickling module reactor and high pass wind bio-trickling reaction system |
| CN111362520A (en) * | 2020-04-10 | 2020-07-03 | 广东自华科技有限公司 | Landfill leachate treatment system and method |
| CN111410336A (en) * | 2020-04-10 | 2020-07-14 | 广东自华科技有限公司 | Method and treatment process for precipitating and separating humic acid in landfill leachate |
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Open date: 20080423 |