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Treatment method for infiltration liquid in domestic refuse burying field

A technology of domestic waste and treatment method, applied in the field of leachate treatment of urban domestic waste landfill, can solve the problems of high investment and operation cost of leachate treatment, and achieve the effect of improving treatment effect, water quality and uniform flow

Active Publication Date: 2004-12-29
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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  • Treatment method for infiltration liquid in domestic refuse burying field
  • Treatment method for infiltration liquid in domestic refuse burying field
  • Treatment method for infiltration liquid in domestic refuse burying 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 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 fill the special garbage 4 on the uniform water distribution layer 5 in the middle until the thickness reaches 1.5-2.0m, then lay the porous water distribu...

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Abstract

The present invention is in-situ percolate treating process in life garbage landfill. Special garbage treating layer to generate methane is first obtained with biological treating apparatus outside the landfill; and the garbage treating layer with anaerobic microbe, middle water distributing layer and surface water distributing layer is utilized for percolate to contact homogeneously with the anaerobic microbe to convert organic pollutant in percolate into landfill gas capable of being further utilized. The present invention has homogeneous flow of percolate, stable and high percolate treating effect, low power consumption and low cost, and may be used in various kinds of garbage landfill to treat and utilize percolate.

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 ...

Claims

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Application Information

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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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