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Anaerobic-aerobic-film processing technique for urban domestic refuse percolate

A technology for municipal solid waste and leachate, which is applied in the field of anaerobic-aerobic-membrane treatment of municipal solid waste leachate, can solve the problem that the treatment device cannot withstand the impact load of leachate water quality and quantity, high investment and operation costs, and complex process flow and other problems, to achieve the effects of rich biological species, energy saving and high denitrification efficiency.

Inactive Publication Date: 2008-03-26
北京盖雅环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing leachate treatment process has problems such as high investment and operation costs, complex process flow, etc., and many treatment devices cannot withstand the impact load of strong water quality and quantity of leachate, unstable operation, and low treatment efficiency.

Method used

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  • Anaerobic-aerobic-film processing technique for urban domestic refuse percolate

Examples

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Embodiment 1

[0038] Using the combined process of the present invention to treat fresh landfill leachate and raw water COD Cr The concentration is 12000-24000mg / L, NH 4 + -N concentration is 1050-1800mg / L, TIN (total inorganic nitrogen) concentration is 1180-1910mg / L, the water temperature of UASB reactor and G-BAF reactor is controlled at 35±2℃ and 28±2℃ respectively, and the residence time is respectively 72h and 36h, the final water COD Cr The concentration is 10-50mg / L, NH 4 + -N concentration is 1.0-12.0mg / L, TN concentration is 10-150mg / L, COD Cr and NH 4 + - The NTN removal rate reached 99%, and the TN removal rate also reached more than 90%.

Embodiment 2

[0040] Using the combined process of the present invention to treat middle-aged and old landfill leachate and raw water COD Cr The concentration is 3850-6500mg / L, NH 4 + -N concentration is 1400-2100mg / L, the water temperature of UASB reactor and G-BAF reactor is controlled at 35±2℃ and 28±2℃ respectively, the residence time is 60h and 36h respectively, and the final effluent COD Cr The concentration is 20-50mg / L, NH 4 + -N concentration is 2.5-15.0mg / L, COD Cr and NH 4 + -N removal rate can reach more than 98%.

[0041] It can be seen from the above examples that the combined process of the present invention has a good treatment effect on the leachate of different landfill time periods, and the final effluent meets the first-class standard for comprehensive sewage discharge (GB8978-1996).

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Abstract

The present invention is the anaerobic treatment, aerobic treatment and membrane treatment process of domestic garbage percolate, and belongs to the field of sewage treating technology. The combined treating process is completed in four units including a two-stage upwards flowing anaerobic sludge bed, an immobilized microbial biological aeration filter, a coagulating and settling pond and a nanometer filtering membrane. The present invention has the advantages of simultaneous elimination of carbon, nitrogen and other pollutants, high treating effect, high load impact resistance and high stability. The present invention may be also applied in treating other waste water with high ammonia nitrogen content, high organic pollutant concentration and great water quality fluctuation.

Description

technical field [0001] The present invention relates to the field of wastewater treatment, in particular to an anaerobic-aerobic-membrane treatment process for municipal solid waste leachate, which is a combination of bio-physicochemical-membrane removal of high-concentration organic matter and ammonia nitrogen in the leachate It is suitable for the treatment of municipal solid waste leachate and other industrial wastewater with high ammonia nitrogen and high organic matter, such as aquaculture wastewater, coking wastewater and sludge anaerobic digestion solution. Background technique [0002] Leachate is produced in the process of waste landfill decay, mainly from the following three aspects: (1) natural rainfall and runoff in the landfill; (2) the original water content of the waste itself; (3) waste landfill Water produced as a result of anaerobic decomposition by microorganisms. Among them, the precipitation in the landfill is the main part. When the water seeps through...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F1/52C02F1/44
Inventor 温丽丽崔锋宗承坤叶正芳
Owner 北京盖雅环境科技有限公司
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