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Garbage percolate treatment method

A technology of landfill leachate and a treatment method, which is applied in the field of landfill leachate treatment, can solve the problems of inability to flexibly adapt to changes in the water quality of the landfill, and achieves reduction of sludge treatment volume and extension of service life and life. , the effect of reducing land occupation

Active Publication Date: 2011-02-09
JIANGSU ZHAOSHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology

[0010] Aiming at the defect that the above-mentioned existing conventional landfill leachate treatment methods cannot flexibly adapt to changes in water quality in the long-term operation of landfills, the applicant provides a modular landfill leachate treatment method with strong impact resistance, so that it can flexibly adapt to landfill seepage Changes in water quality and water volume of filtrate in different seasons and different stages (initial, middle, and old stages) meet the effluent standards, reduce treatment costs, and extend the service life and life of treatment projects

Method used

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Embodiment Construction

[0035] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0036] Such as Figure 1 to Figure 5 As shown, the landfill leachate treatment method of the present invention mainly includes the following steps.

[0037] Step 1: The landfill leachate is filtered through two thick and thin grids to remove larger suspended solids or drifts, and then enters the water inlet 101 of the homogenization tank 100. At the same time, the reflux liquid of the subsequent process, including the concentrated liquid produced by the ultrafiltration membrane system and Cleaning solution, reverse osmosis cleaning solution and supernatant produced by the drying field also flow back into the homogenization tank 100 to dilute and buffer the landfill leachate. Acid and alkali are added to the homogenization tank 100 to control seepage. The pH value of the filtrate is stirred or aerated and stirred by the stirring device 103...

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Abstract

The invention relates to a garbage percolate treatment method. Garbage percolate is subjected to homogenization, a two-phase anaerobic biochemical system, a triple-effect enhanced biotreatment system and advanced treatment, a plurality of pollution elements can be removed with high efficiency by effectively aiming at the characteristics of high organic matter and ammonia nitrogen content in the garbage percolate in each step, and the effluent index is greatly superior to the standard in China. The garbage percolate treatment method has strong impact resistance capacity, can adapt to changes of water quality and water quantity of the garbage percolate in different seasons and different stages (a primary stage, a middle stage and an aged stage), prolongs the service life and the lifetime of the systems and reduces the treatment cost of the garbage percolate.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for treating landfill leachate. Background technique [0002] Landfill leachate refers to the liquid containing organic or inorganic components produced by the physical, biological, and chemical effects of compaction and fermentation during the process of stacking and landfilling, as well as the seepage of precipitation and other external water. According to the landfill life of the landfill and the chemical oxygen demand and ammonia nitrogen concentration of the leachate, the landfill leachate can be divided into the initial leachate of the new landfill, and the medium-term leachate of the middle-aged landfill of 5 to 10 years. Filtrate and old leachate from landfills older than 10 years. Table 1 is a comparison table of the water quality characteristics of the leachate in these three different periods, from which it can be seen that the properties of ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 卢国满周震球裴月新徐佳峰
Owner JIANGSU ZHAOSHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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