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High nitrogen-containing landfill leachate processing method and apparatus

A landfill leachate and treatment device technology, which is applied in the direction of aerobic and anaerobic process treatment, can solve the problems of difficult biological treatment of high ammonia nitrogen landfill leachate, achieve good nitrogen and phosphorus removal effects, prevent sludge, and save costs Effect

Active Publication Date: 2010-09-08
CHONGQING KANGDA ENVIRONMENTAL PROTECTION IND GRP
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for treating municipal solid waste leachate, to solve the technical problem that high ammonia nitrogen landfill leachate is difficult to treat biologically; and to solve the problems of deep denitrification and deep removal of organic matter in high-concentration organic wastewater

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  • High nitrogen-containing landfill leachate processing method and apparatus
  • High nitrogen-containing landfill leachate processing method and apparatus
  • High nitrogen-containing landfill leachate processing method and apparatus

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Embodiment Construction

[0036] Referring to Fig. 1, the concrete flow process that the present invention carries out landfill leachate treatment is:

[0037] The leachate enters the UASB1 reactor B from the original leachate area 1 through the UASB1 leachate inlet pump 4 together with the returning SBR nitrification supernatant, and the denitrifying bacteria and anaerobic methanogens in the reactor make full use of the abundant influent Organic matter undergoes anoxic denitrification and anaerobic methanogenesis reactions, so that organic matter is fully degraded. The effluent of UASB1 reactor B enters UASB2 reactor C from the bottom through the UASB2 water inlet pump 18, and the remaining organic matter in the effluent of UASB1 reactor C is further removed by the anaerobic action of methanogens. The effluent from UASB2 reactor C flows to the intermediate water tank 28 by gravity. The leachate treated by the two-stage UASB enters the SBR reactor D, and first, through the aerobic respiration of heter...

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Abstract

The invention relates to a high nitrogen landfill leachate treatment method and a device thereof, belonging to the technical field of biological treatment of wastewater. The existing treatment technology can not remove the ammonia and the organic matters of landfill leachate simultaneously and deeply. Taking actual landfill leachate as a target, the invention uses a two-level UASB-SBR chemical and biological system for processing and obtains better effect. By the way of the return of the nitrification liquid in a SBR reactor, not only a certain degree of dilution function is carried out on raw water, but also the nitrification liquid containing rich NO3<->-N can conduct denitrification with the help of rich organic carbon sources in the raw water. Most of organic matters in the landfill leachate are removed in a UASB1 reactor; and the removal rate of COD can reach 92.1 percent; and the biggest organic load is 13kgCOD / m <3> question mark d. The UASB1 reactor and the SBR reactor achieve further removal of the organic matters. In the SBR reactor, by the nitrification function, almost 100 percent of NH4<+>-N is converted into NO3<->-N. As pH, ORP, and DO are used as the control parameters in the biological nitrogen removal process of a SBR system, energy consumption brought by the over-aeration and over-stirring can be effectively prevented, and the operating cost is saved.

Description

technical field [0001] The invention relates to a sewage biological treatment method and device. Background technique [0002] With the acceleration of urbanization in my country, the number of cities and towns is increasing, the scale of cities is expanding day by day, and the population is increasing rapidly, which directly leads to a substantial increase in urban solid waste (municipal solid waste). Landfill as a municipal solid waste treatment method has been widely used at home and abroad. At present, about 90% of municipal solid waste in my country is disposed of by landfill. During the landfill process of municipal solid waste (MSW), due to compaction and microbial decomposition, the pollutants contained in the solid waste will be dissolved with water, and form landfill leachate together with rainfall and runoff. As a by-product in the process of waste disposal, leachate has seriously affected the healthy development of waste disposal in my country. At present, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 彭永臻孙洪伟时晓宁王希宁
Owner CHONGQING KANGDA ENVIRONMENTAL PROTECTION IND GRP
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