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On-spot treatment method for leachate of landfill field

A domestic garbage and garbage treatment technology, applied in the direction of solid waste removal, etc., can solve the problems of high investment and operation costs in leachate treatment, and achieve the effects of improving treatment effects, improving water quality, and uniform flow

Active Publication Date: 2009-08-26
TONGJI UNIV
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Problems solved by technology

This method can effectively purify the leachate, but because this method needs to lay out a leachate circulation distribution pipe network in the middle covering layer of each step of the landfill, and at the same time continue to circulate the leachate during the entire operation period of the landfill , so that the investment and operating costs of leachate treatment are relatively high

Method used

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  • On-spot treatment method for leachate of landfill field
  • On-spot treatment method for leachate of landfill field
  • On-spot treatment method for leachate of landfill field

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Embodiment Construction

[0016] see figure 1 , 2 , 3. Before landfilling, the anti-seepage layer 2 should be laid on the base soil layer 1 according to the requirements of the sanitary landfill, and then the leachate collection layer 3 should be laid, and the special garbage should be buried on the leachate collection layer 3 Process layer 4. Before landfilling garbage, landfill partitions should be formed by separating them with soil barriers (about 1m in height), each with an area of ​​about 1000m 2 . When the landfill thickness of the garbage layer reaches 1.5-2.0m, the middle uniform water distribution layer 5 formed by mixing graded crushed stone and construction sand is evenly laid on this layer, the particle size of graded crushed stone is 5-30mm, and the graded crushed stone The ratio of stone to construction sand is 1:1 by volume. Continue to bury garbage on the middle uniform water distribution layer 5 until the thickness reaches 1.5-2.0m, then lay porous water distribution pipes 8, and...

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Abstract

The invention relates to an in-site treatment method for leachate in a domestic garbage landfill. The invention relates to a method for treating the leachate of the municipal solid waste landfill in the landfill. First, a one-time off-site biological treatment is prepared to obtain a special garbage treatment layer for the methanogenic stage, and then use the anaerobic microorganisms in this layer and the middle uniform water distribution layer and surface water distribution layer in this layer to ensure that the leachate flows through This layer can evenly contact with the anaerobic microorganisms in it, so that the organic pollutants in the leachate can be converted into usable landfill gas. The invention can ensure uniform flow of leachate, stable and good treatment effect, save energy consumption of leachate transportation, investment and operation costs of water distribution pipe network facilities in each intermediate covering layer, and convert organic matter in leachate into flammable landfill Gas has good economic and social benefits. It can be widely used in valley-type or flat-type landfills, so that the leachate can be fully purified and utilized under the action of gravity or power through the special treatment garbage layer.

Description

technical field [0001] The invention relates to a method for treating the leachate of municipal solid waste landfill in the landfill. Background technique [0002] The leachate produced by municipal solid waste landfills contains high concentrations of pollutants (the COD content of which can reach 50,000mg / L or higher), making it difficult to treat. The pollution control and treatment technologies of leachate can be divided into two categories: one is off-site treatment, that is, after the landfill leachate is collected, it is transported to sewage treatment facilities and treated by various organic sewage treatment technologies. Since the specific technical units used in the off-site treatment of leachate are similar to those used in other organic sewage treatment, the treatment cost is very high, and because the quality and quantity of the leachate vary greatly in different operation periods of the landfill, the cost of off-site treatment It is very difficult to improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00
Inventor 何品晶邵立明李国建宗兵年瞿贤
Owner TONGJI UNIV
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