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Method for processing middle and late period of landfill leachate

A technology of landfill leachate and treatment method, which is applied in the treatment field of middle and late landfill leachate, can solve the problems of poor treatment effect, high cost, accumulation, etc., and achieve the effect of improving biodegradability and eliminating chromaticity

Active Publication Date: 2015-04-15
ZHONGSHAN ENVIRONMENTAL PROTECTION IND CO LTD
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Problems solved by technology

Some of them are treated by distillation concentration method and reverse osmosis filtration method. These two methods cause the accumulation of pollutants due to the high construction investment and operation costs and the concentrated water generated to recharge the garbage dump.
At present, the leachate of many large and medium-sized cities in China has problems such as poor treatment effect and need to enter the urban sewage treatment plant for treatment after treatment, so the efficiency is low and the cost is high.

Method used

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  • Method for processing middle and late period of landfill leachate

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, a treatment method for landfill leachate in the middle and late stages:

[0027] ⑴. Collect the leachate produced by the middle and late stage garbage into the adjustment tank 1.

[0028] (2) The leachate in the regulating pond 1 is transferred to the integrated denitrification reactor 3 through the water pump 2 arranged at the bottom of the regulating pond 1, and the denitrification reactor 3 includes a nitrification zone and a denitrification zone , installing a hydrophilic polyurethane filler in the nitrification zone, and placing a slow-release carbon source polymer material in the denitrification zone. The slow-release carbon source polymer material is preferably poly-β-hydroxy fatty acid ester, and the integrated denitrification reaction The aeration in the nitrification area of ​​device 3 uses the lifting force gener...

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Abstract

The invention relates to a method for processing middle and late period of landfill leachate. The method comprises steps of collecting middle and late period of landfill leachate through a regulating reservoir, transferring the landfill leachate into an integral denitrification reactor by a water pump for denitrification, then transferring into an acid-leaching reactor for acid leaching, then transferring into an integral iron-carbon fenton reactor for fenton reaction, then transferring into a coagulating precipitator for coagulating precipitation, then transferring into an active sludge reactor for active sludge treatment, then transferring into a filter tank for filtering, then transferring into a disinfecting tank for disinfecting, then discharging the solution meeting the national discharge standard into a municipal sewage pipeline. The method effectively protects the environment.

Description

【Technical field】 [0001] The invention relates to a method for treating landfill leachate in the middle and late stages. 【Background technique】 [0002] Landfill leachate is sewage seeping from landfills. Because it dissolves many substances in the garbage composition, the composition of landfill leachate is extremely complex. The main pollutants include a large number of organic substances such as organic hydrocarbons and their derivatives, Acids and lipids, heavy metals, nitrogen salts, etc. Its important features are: COD is as low as several thousand milligrams per liter, ammonia nitrogen and total nitrogen are as high as 1000 milligrams per liter, and the color is deep. Without harmless treatment, it will seriously pollute the surrounding soil and water system. So far, the relatively mature and under-researched methods for treating landfill leachate in China mainly include biological treatment and chemical methods. Oxidation pond, etc. Chemical methods mainly include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 宋应民
Owner ZHONGSHAN ENVIRONMENTAL PROTECTION IND CO LTD
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