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Aminonitrogen treatment system for garbage landfil leachate

A landfill and treatment system technology, applied in the field of landfill leachate ammonia nitrogen treatment system, can solve the problems of soil structure pollution, easy to be restricted by land conditions, etc., and achieve the effect of flexible operation

Inactive Publication Date: 2009-01-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the long run, there are accumulation and saturation problems of heavy metals and salts in the soil, which have potential pollution effects on soil structure, plant growth and surrounding groundwater, and are easily restricted by land conditions, so they are only suitable for areas with vast land.

Method used

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  • Aminonitrogen treatment system for garbage landfil leachate
  • Aminonitrogen treatment system for garbage landfil leachate
  • Aminonitrogen treatment system for garbage landfil leachate

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Embodiment Construction

[0020] Such as figure 1 , 2 As shown in , 3, the landfill leachate ammonia-nitrogen treatment system has a surrounding pit 13, and the surrounding pit is a cuboid, with a length of 300~500cm×a width of 300~500cm×a height of 80~120cm, a slope of 4~6%. The pit foundation 14 is formed by reinforcement of high-density polyethylene anti-seepage film (HDPE), geotextile and clay layer, and the pit is divided into multiple zones by multiple vertical partitions 10 parallel to each other. From top to bottom, the area consists of vegetation layer 8 (leachate tolerant plants, such as vetiver, water peanut, cattail, water onion, rushes, etc.), covering soil layer 11 (thickness 10cm; in order to enhance water permeability and fertility, the structure and Quality improvement), gravel drainage layer 12, second anti-seepage membrane 7, clay compaction layer 6 (thickness 10-15cm), first anti-seepage membrane 5, filler layer (thickness 30-35cm), evenly inserted in each area A plurality of vert...

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Abstract

A system for treating the ammoniacal nitrogen in the percolated liquid of refuse landfill site with a surrounding pit features that said surrounding pit is divided into multiple regions, and each region is vertically composed of vegetation layer, covered soil layer with water distributing tube, cobble layer, the second impervious film, compacted clay layer, the first impervious film and filler layer and has several inserted vertical tubes and a cobble layer before said filler layer.

Description

technical field [0001] The patent of the present invention relates to an ammonia nitrogen treatment system for landfill leachate. Background technique [0002] Municipal landfill leachate is a difficult problem in the field of sewage treatment. The main characteristics of landfill leachate are large amount of production, complex water quality, and high concentration of ammonia nitrogen. If it is not handled properly, it will cause serious pollution to groundwater and surface water near the landfill. The leachate emits odor and Breeding mosquitoes and flies also pose a great danger to the surrounding area. At present, the on-site treatment methods of landfill leachate mainly include physical and chemical methods, biological methods, land treatment, recharge and wetland treatment, etc. [0003] Compared with urban sewage, the concentration of ammonia nitrogen in landfill leachate is tens to hundreds of times higher. Ammonia nitrogen can inhibit the microbial activity in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/28C02F3/32C02F3/34C02F3/10C02F101/16C02F101/38
CPCY02W10/10
Inventor 郝永俊吴伟祥孙华吴松维陈英旭
Owner ZHEJIANG UNIV