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Method for treating early-stage landfill leachate

A technology of landfill leachate and treatment method, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost, poor treatment effect, low efficiency, etc. The effect of eliminating chroma and improving biodegradability

Active Publication Date: 2015-06-03
ZHONGSHAN ENVIRONMENTAL PROTECTION IND CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Some of them are treated by concentrated distillation and reverse osmosis filtration. These two methods are in an embarrassing situation in domestic promotion and application due to the serious defects of high construction investment and operating costs, and serious defects in the accumulation of pollutants caused by concentrated water recharge.
At present, the leachate of garbage disposal sites in many large and medium-sized cities in China has poor treatment effect, low efficiency and high cost.

Method used

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  • Method for treating early-stage landfill leachate

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, an early landfill leachate treatment method,

[0027] (1) Collect the leachate produced by the early garbage into the regulating tank 1.

[0028] (2) Transfer the leachate in the regulating tank 1 to the fully mixed anaerobic reactor 3 through the water pump 2 to carry out anaerobic reaction, and use the degradation of anaerobic microorganisms under anaerobic conditions to make the waste generated in the early stage Most of the organic matter in the leachate is decomposed to achieve the purpose of deodorizing and degrading macromolecular organic matter into small molecular organic matter. The fully mixed anaerobic reactor is a new anaerobic reactor that uses gravity self-reflux for forced mixing and sedimentation. The system eliminates the need for complex three-phase separators and water distributors. The shear force of fo...

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Abstract

The invention relates to a method for treating early-stage landfill leachate. The method comprises the following steps: collecting early-stage landfill leachate through a regulating reservoir, transferring the leachate to a complete mixing anaerobic reactor through a pump for anaerobic reaction, subsequently transferring to an integrated denitrification reactor for denitrification reaction, subsequently transferring to an integrated iron-carbon Fenton reactor for Fenton reaction, subsequently transferring to a coagulating sedimentation device for coagulating sedimentation, subsequently transferring to an activated sludge reactor for activated sludge treatment, subsequently transferring to a filter tank for filtering, subsequently transferring to a disinfecting tank for disinfecting, and finally discharging the solution which meets the national discharge standards into municipal living sewage pipelines. The environment is effectively protected.

Description

【Technical field】 [0001] The invention relates to a treatment method for early landfill leachate. 【Background technique】 [0002] The early landfill leachate was the sewage seeped from the new landfill. Because it dissolved many substances in the waste composition, the composition of the landfill leachate was extremely complex. The main pollutants included a large number of organic substances such as organic hydrocarbons and their derivatives. substances, acids and lipids, heavy metals, nitrogen salts, etc., the characteristic organic pollutants index COD is high, the range is 5000-10000mg / L, the total nitrogen is high, the range is: 800-1000mg / L, ammonia nitrogen is low, the color is black, The smell is very smelly, if it is not treated harmlessly, it will seriously pollute the surrounding environment and water system. So far, the relatively mature and under-researched methods for treating landfill leachate in China mainly include biological treatment and chemical methods....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 宋应民
Owner ZHONGSHAN ENVIRONMENTAL PROTECTION IND CO LTD
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