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A recycling and sustainable domestic waste landfill treatment method

A technology of domestic waste and treatment methods, which is applied in the field of urban domestic waste treatment and disposal, can solve the problems of long stabilization time of bioreactor landfills, achieve the effects of shortening the stabilization period, low cost, and speeding up the stabilization process

Active Publication Date: 2018-11-06
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem of long stabilization time of the bioreactor landfill in the prior art, the present invention provides a recycling and sustainable domestic waste landfill treatment method

Method used

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  • A recycling and sustainable domestic waste landfill treatment method
  • A recycling and sustainable domestic waste landfill treatment method
  • A recycling and sustainable domestic waste landfill treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] combine Figure 1-14 , a circular and sustainable domestic waste landfill, including four processing units, that is, landfill units, which are 1# unit, 2# unit, 3# unit and 4# unit; 1# unit is sequentially arranged from bottom to top It is an anti-seepage lining with a height of 1-2m, a gravel layer 1 with a height of 0.15-0.20m, a garbage layer 2 with a height of 0.5-1.5m, and a humic layer 3 with a height of 0.15-0.20m; in 1# A vertical central pipe ventilation system is set up at every grid intersection point of 10-20m in the unit; HDPE geomembrane is covered on the humus layer 3 on the top layer of unit 1#, HDPE geomembrane has excellent anti-seepage, anti-corrosion performance, Good chemical stability. The landfill has a square structure and is divided into "field" shapes, that is, the 2# unit, 3# unit and 4# unit are the same as the 1# unit, and each unit is in the landfill, stabilization, and mining stages in sequence according to time. Used interchangeably.

...

Embodiment 2

[0085] A municipal project re-sites the landfill for construction, and proposes a recycling and sustainable domestic waste landfill treatment method. The structure and treatment method of the landfill are the same as in Example 1, as shown in figure 1 As shown, the landfill of the present invention is a new type of landfill unit structure, which combines clay composite anti-seepage technology, artificial reinforcement and multi-component stabilization technology, landfill gas recovery and utilization technology and leachate anaerobic pretreatment technology.

[0086] The anti-seepage lining uses the mature clay composite anti-seepage technology, that is, ordinary clay is added with 20% fly ash and 5% bentonite to form a composite clay material, which is compacted to play an anti-seepage effect, forming a strong anti-seepage ability and easy to repair anti-seepage system, the saturated permeability coefficient of the compacted composite clay layer should be less than 1.0×10 -7 ...

Embodiment 3

[0144] One of embodiment of the present invention, its structure and method are the same as embodiment 1, and wherein, the gravel layer 1 that height 0.2m is filled around casing pipe, anti-seepage liner height is 2m, and the height of rubbish layer 2 is 1.0m, The height of the humus layer 3 is 0.2m. In the 1# unit, a vertical ventilation system is installed at every 10m grid intersection, and the side slope of the new bioreactor landfill column 23 is provided with perforated ventilation at every 10m horizontal distance. The side pipe and the central pipe part in the sleeve pipe have a hole with a diameter of 10mm.

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Abstract

The invention discloses a circulating sustainable domestic waste landfill site and a treatment method thereof and belongs to the technical field of municipal domestic waste treatment and disposal. The circulating sustainable domestic waste landfill site comprises four treatment units, namely, the first unit, the second unit, the third unit and the fourth unit; the first unit is sequentially provided with a seepage-proofing lining, a rubble layer, a waste layer and a humus layer from the bottom to the top layer; vertically-upward central tube ventilating systems are arranged at mesh intersections in the first unit every other 10-20 m; the humus layer on the top layer of the first unit is covered with an HDPE geomembrane, and the HDPE geomembrane has excellent seepage-proofing and anti-corrosion performance and good chemical stability. The second unit, the third unit and the fourth unit are identical to the first unit, and all the units are sequentially at a landfilling stage, a stablizing stage and an exploitation stage according to the time sequence and are used alternately. The stabilizing degree of household waste is increased, and a circulating sustainable application of the landfill site is achieved.

Description

technical field [0001] The invention relates to the technical field of municipal solid waste treatment and disposal, in particular to a recycling and sustainable domestic solid waste landfill treatment method. Background technique [0002] As a low-investment, easy-to-manage, environmentally friendly form of domestic waste treatment technology and the only final disposal method for solid waste, landfill is widely used and continues to develop. More than 80% of municipal solid waste in China is disposed of by landfill technology. Although the landfill technology generally has the problems of harsh operating environment and unsatisfactory control of air and water pollution, it is still the mainstream way of domestic waste treatment in the future. Municipal solid waste treatment in developed countries such as the European Union and the United States has developed in the direction of prioritizing recycling (recycling), accelerating stabilization of bioreactor landfilling (biore...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B1/00B09B3/00B09B5/00
CPCB09B1/00B09B3/00B09B5/00
Inventor 吴军李俊韩诚张艺王敏邵川张浩然刘佳诘
Owner NANJING UNIV
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