Treatment technology for landfill leachate
A landfill leachate and treatment process technology, applied in the field of environmental protection, can solve problems such as high salt content, poor biodegradability, and affecting membrane flux, and achieve simple operation and maintenance, strong anti-pollution ability, and enhanced denitrification effect Effect
Inactive Publication Date: 2019-10-22
鹏凯环境科技股份有限公司 +1
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Problems solved by technology
Although this process has a certain effect on the treatment of organic pollutants in landfill leachate, due to the characteristics of poor biodegradability, high concentration, and high salt content of landfill leachate, the process is not ideal for the treatment of landfill leachate. , will affect the biochemical effect, lead to serious fouling of the membrane, affect the membrane flux, reduce the service life of the membrane, and a series of problems such as the effluent quality exceeds the standard, which seriously affects the stable operation of the entire system.
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[0036] The present invention will be further described below through the description of specific embodiment, but this is not limitation to the present invention, those skilled in the art can make various modifications or improvements according to the basic idea of the present invention, but as long as not departing from the basic principle of the present invention Thoughts are all within the protection scope of the present invention.
[0037] refer to figure 1 , is a flow chart of a treatment process for landfill leachate according to the present invention, specifically comprising the following steps:
[0038] (1) Pretreatment
[0039] The landfill leachate that has undergone anaerobic reaction first enters the buffer pool. The buffer pool is equipped with a grille device that can remove large impurities in the leachate. The buffer pool is mainly used to adjust the water volume; then add a flocculation dehydrating agent to the landfill leachate The landfill leachate is deh...
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The invention belongs to the technical field of environmental protection, and particularly relates to a treatment technology for landfill leachate. The treatment technology for landfill leachate mainly comprises the following process steps: (1) pretreatment; (2) MBR (membrane biological reaction) treatment; (3) membrane deep treatment; and (4) concentrate treatment. The treatment technology for landfill leachate mainly adopts processes of pretreatment (regulating tank + concentrator) + two-stage A / O (anaerobic-aerobic process)-MBR membrane biological treatment + NF (nanofiltration) + deep denitrification + RO (reverse osmosis), so the treatment capability of the landfill leachate, especially the landfill leachate with a complex composition and a high concentration of organic pollutants, iseffectively improved, the adaptability to water quality change, the pollution and oil resistance and tensile strength of the technology are effectively enhanced, and the service life of the technology is effectively prolonged.
Description
technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a treatment process for landfill leachate. Background technique [0002] Landfill leachate is a kind of high-concentration organic landfill leachate that is difficult to treat. It mainly comes from the thick slurry of garbage generated in the process of kitchen waste treatment, flushing and drainage, etc., and enters the biogas slurry treatment system after anaerobic digestion. The concentration of suspended solids in landfill leachate is much higher than that of conventional landfill and incineration plant leachate. It has high salt content, high concentration of nitrogen and other organic matter, and is difficult to extract and utilize. If it is discharged without treatment, it will cause serious environmental pollution. [0003] At present, the overall process adopted by many comprehensive waste treatment plants in China is a combined process of "...
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IPC IPC(8): C02F9/14C02F103/06C02F101/16C02F101/30
CPCC02F1/001C02F1/441C02F1/442C02F1/444C02F1/52C02F1/722C02F3/302C02F9/00C02F2101/16C02F2101/30C02F2103/06C02F2301/08C02F2305/026
Inventor 王国彬谢洁云钱湛祖冯境华陈翠群余雁刘秀平
Owner 鹏凯环境科技股份有限公司