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Combined treatment method and system for landfill leachate

A technology for landfill leachate and enhanced treatment, applied in sustainable biological treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc. Benefit, ensure ecological security, high efficiency

Inactive Publication Date: 2006-10-04
PEKING UNIV
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  • Summary
  • Abstract
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Problems solved by technology

This process also uses electrolysis and permeation filtration. Although the effluent can also meet the first-level discharge standard, it has the disadvantages of large investment and high operating costs.
The patent document CN1490264A discloses a multi-stage deep biochemical treatment process for landfill leachate. This process uses enhanced oxidation, catalytic cracking, coagulation clarification, filter membrane, reverse osmosis and other treatment methods. The process of this treatment method is complicated. and has limited processing power
In short, the current landfill leachate combined treatment technology has many problems that are difficult to take into account

Method used

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  • Combined treatment method and system for landfill leachate

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Embodiment Construction

[0015] The basic principles and exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] First, the basic principles of the present invention are discussed. figure 1 The flow chart of the combined treatment process of the present invention and the functions of each treatment structure are shown. Landfill leachate is firstly treated by a pre-aeration adjustment tank (not shown in the figure), and the leachate after pre-aeration adjustment treatment is transported to a biological coagulation tank, and then undergoes three stages of treatment in turn, and finally becomes a Grade discharge standard effluent. The three-stage processing of the present invention will be introduced below with reference to the system shown in the accompanying drawings:

[0017] Biological coagulation sedimentation tank (belongs to primary treatment)

[0018] The present invention adopts enhanced primary treatment (biologic...

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Abstract

Disclosed are a method for processing rubbish percolating water and its system. The processing technique realizes the procession by combining the procession, biological processing technology and ecological procession. The system mainly comprises of adjusting pool, biological coagulation pool, high effective biological filtration pool, comprehensive ecological pool and so on. Compared with the present technology, it has rapid processing speed, high quality of water processed which can reach the first-class drainage standard, and can realize naugh drainage of waste water in rubbish processing factory.

Description

technical field [0001] The present invention relates to a method and system for treating landfill leachate, more specifically, the present invention relates to a combined treatment process and system, which applies "physical and chemical treatment + biological treatment + ecological treatment" process. Background technique [0002] As a high-concentration organic wastewater that is difficult to treat, landfill leachate has extremely complex components. In landfill leachate, COD cr 、BOD 5 , heavy metals, ammonia nitrogen and salt content are very high, and the biodegradability of landfill leachate is poor, organic matter with large molecular weight dominates, and the proportion of microbial nutrient elements is out of balance. In addition, landfill leachate also has certain toxicity. Garbage seepage liquid mainly comes from three aspects: (1) natural rainfall and runoff in the landfill; (2) water content of crude oil in the garbage itself; (3) produced by anaerobic decompos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/52C02F3/10C02F3/30
CPCY02W10/10
Inventor 叶正芳倪晋仁籍国东温丽丽邵世云
Owner PEKING UNIV
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