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Municipal domestic waste leachate (A/O)2 combined membrane biochemical reaction-reverse osmosis membrane treatment process

A technology of municipal solid waste and membrane biochemical reaction, which is applied in biological water/sewage treatment, water/sewage treatment, special compound water treatment, etc. It can solve the problems of unstable system operation, dependence, and repeated construction of facilities, and reduce the treatment cost. Investment and operating costs, reduction of nutrient consumption, and effects of saving medicine and electricity consumption

Inactive Publication Date: 2016-06-01
广东省环境保护工程研究设计院有限公司
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Problems solved by technology

[0005] "Standards for the Control of Pollutants in Domestic Garbage Landfills" (GB16889-2008) was promulgated and implemented in April 2008. It has very high requirements for the discharge of pollutants in landfills. There is no unified understanding of the treatment technology for landfill leachate at home and abroad. , all kinds of ideas and applications are in the stage of trial and exploration. Most research units adopt the method of adding treatment links or advanced treatment equipment for the transformation of existing projects. However, due to the immaturity of process control and treatment equipment, duplication of facilities Construction, excessive reliance on foreign patented equipment, unstable system operation, and inconvenient maintenance, etc., eventually resulted in the high unit construction cost of the leachate treatment plant and difficult to control the operating cost

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  • Municipal domestic waste leachate (A/O)2 combined membrane biochemical reaction-reverse osmosis membrane treatment process
  • Municipal domestic waste leachate (A/O)2 combined membrane biochemical reaction-reverse osmosis membrane treatment process

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Embodiment Construction

[0022] The specific embodiments of the invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0023] Such as figure 1 Shown, the basic technological process of this technical scheme is:

[0024] 1. Mix the sewage in the landfill from the garbage dump, the adjustment reservoir and other sources in proportion through the water quality balance pool, and mix the added chemicals and nutrients through the agitator to form pretreated sewage.

[0025] 2. For the pretreated sewage, the (A / O) system consisting of denitrification, nitrification, post-denitrification, terminal oxidation a...

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Abstract

The invention discloses a municipal domestic waste leachate (A / O)2 combined membrane biochemical reaction-reverse osmosis membrane treatment process. A core process comprises an (A / O)2 combined membrane biochemical reaction system and a reverse osmosis membrane system. The (A / O)2 combined membrane biochemical reaction system is a membrane bio-reactor adopting a low-circulation multistage denitrification process and combines links like separate-stage nitrification, denitrification, multi-source water quality adjustment and ultrafiltration / microfiltration membrane outgoing membrane separation. In the reverse osmosis membrane system, compact membrane characteristics of a reverse osmosis membrane are utilized, most of ions and all of suspended matters are intercepted, and organic matters and other small-molecule substances degraded by a biochemical treatment method are further separated. The process has the advantages of high water quality adaptability, high treatment load, high treatment efficiency, small facility occupation area, low comprehensive energy consumption and stable quality of outgoing water, and is suitable for wastewater treatment with high organic matter concentration, high ammonia nitrogen and total nitrogen concentration and strict requirements on outgoing water.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a municipal solid waste leachate (A / O) 2 Combined membrane biochemical reaction-reverse osmosis membrane treatment process. Background technique [0002] Leachate (also known as leachate) is in the process of urban solid waste landfill, due to compaction and the action of microorganisms, the pollutants contained in the garbage will be dissolved with water and formed together with rainfall, runoff, etc. Leachate is the secondary pollution produced in the landfill process, which can cause hypoxia, water quality deterioration, and eutrophication of surface water bodies, threaten drinking water and industrial and agricultural water sources, and make groundwater lose its use value. Organic pollutants entering the food chain will directly threaten human health. [0003] Because leachate is different from general wastewater, it is characterized by high organic pollution load, extremely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F1/441C02F1/444C02F1/72C02F3/305C02F2305/06
Inventor 周昭阳汤克敏吴惠鹏袁维芳沈建兵汤俊陈娟娟张伟
Owner 广东省环境保护工程研究设计院有限公司
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