Method for treating landfill leachate

A landfill leachate and treatment method technology, which is applied in the field of landfill leachate treatment, can solve the problems of numerous equipment, high investment, high operating costs, and large climate restrictions, and achieve the effects of reducing treatment and operating costs and improving biodegradability

Inactive Publication Date: 2012-09-19
ARCHITECTURAL DESIGN RES INST OF GUIZHOU
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  • Abstract
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Problems solved by technology

In addition, the stripping method is greatly limited by the climate
Therefore, the current landfill leachate treatment mainly adopts biological methods, but the existing biological methods have complicated processes, many processing steps, a lot of equipment, and large investment in facilities and equipment, while the amount of treated water is generally relatively small, resulting in depreciation, The maintenance cost is higher, so the investment and operation cost of processing are higher

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  • Method for treating landfill leachate
  • Method for treating landfill leachate
  • Method for treating landfill leachate

Examples

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Embodiment 1

[0027] Example 1. Such as figure 1 Shown, landfill leachate treatment process of the present invention carries out according to the following steps:

[0028] (1) The landfill leachate is sent to the regulating tank, and the regulating pond is used to regulate the storage flow and homogenize the water quality, and play a pretreatment role;

[0029] (2), then send the landfill leachate into the biological contact oxidation tank, and use the biofilm in the biological contact oxidation tank to remove the biodegradable COD (chemical oxygen demand), some Pollutants such as NH3-N (ammonia nitrogen) and P (phosphorus); the optimal HRT (hydraulic retention time) of landfill leachate in the biological contact oxidation tank is 1d.

[0030] (3) Send the effluent from the biological contact oxidation tank into the low-oxygen aeration tank, carry out conditioning treatment on the landfill leachate and remove some refractory pollutants; residence time) is 2d.

[0031] (4) Send the efflu...

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Abstract

The invention discloses a method for treating landfill leachate. The method comprises the following steps of: feeding the landfill leachate into an adjustment tank first, sequentially feeding the landfill leachate into a biological contact oxidation pond, a low-oxygen aeration tank, a nitrosation reaction tank, an anaerobic ammonium oxidation reaction tank and a microwave treater, finally feeding the landfill leachate into a separator, performing precipitation separation to separate active carbon obtained after microwave treatment from the outlet water of the landfill leachate, and then discharging the outlet water which meets the standard. The technology for treating the landfill leachate saves energy and is high in efficiency and low in consumption; and by the method, pollutants such as organic pollutants, nitrogen (N) and phosphorus (P) can be effectively removed, and the environmentally acceptable treatment and discharge of the landfill leachate can be realized finally.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a treatment method for landfill leachate. . Background technique [0002] The treatment of leachate in urban waste landfills has always been a very difficult problem in the design, operation and management of landfills. Landfill leachate, a high-concentration organic wastewater with complex components, will cause serious water pollution accidents and endanger the ecological environment if it is directly discharged into the environment without treatment. In the past, the leachate produced by the simple landfill treatment of garbage was mainly purified by the underlying land. However, with the extension of time and the limited removal capacity of pollutants by the geological structure, the leachate will affect the groundwater, surface water and landfill. The surrounding environment of the site will be polluted, resulting in hypoxia, water quality deterioration and eutrophication ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/72
Inventor 姚晓园饶正凯魏琛唐忠德张盛莉建峥嵘何云余明军雷文俊
Owner ARCHITECTURAL DESIGN RES INST OF GUIZHOU
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