Garbage leachate treatment method
A technology for landfill leachate and a treatment method, applied in the field of landfill leachate treatment, can solve the problems of complex composition of landfill leachate, large investment in facilities and equipment, and difficulty in discharge of effluent, etc., and achieves remarkable process treatment effect and sludge settling performance. Good, energy-saving effect
Inactive Publication Date: 2019-09-03
TIANHE COLLEGE GUANGDONG POLYTECHNIC NORMAL UNIV
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Problems solved by technology
Landfill leachate is a special kind of wastewater, and its treatment investment and operating costs are much higher than those of general urban sewage and industrial wastewater. This is mainly due to the complex composition of landfill leachate, high ammonia nitrogen concentration, and high organic matter concentration. A lot of equipment, long processing time
Since the landfill leachate has undergone anaerobic process in the waste body, its biochemical properties are relatively poor, and the residence time of biological treatment is long, resulting in large investment in facilities and equipment. At the same time, the treatment volume of landfill leachate is generally relatively small, resulting in High depreciation and maintenance costs; on the one hand, due to the high concentration of ammonia nitrogen has a certain inhibitory effect on the biological treatment system; on the other hand, due to the imbalance of C / N ratio in the leachate caused by the high concentration of ammonia nitrogen, biological denitrification is difficult to carry out , making it difficult for the final effluent to discharge up to the standard
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[0029] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0030] like Figure 1-6 As shown, the present invention provides a treatment method or process for garbage permeate, in which the permeate flows through the sedimentation tank 1, UASB, SBR, and ozone reactor 2 in sequence, and finally the resulting liquid is discharged up to the standard. The sedimentation tank 1 is used to remove COD, BOD, suspended particles and heavy metals. This process needs to add chemicals, such as polyacrylamide, to make the permeate form large particle flocs, and then carry out precipitation. The UASB is used for further removal of COD while ammoniation is carried out. ...
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The invention provides a garbage leachate treatment method. According to the method, leachate sequentially flows through a precipitation pool, UASB, SBR and an ozone reactor, and finally the obtainedliquid reaches standard discharge; the waste gas obtained in the treatment process is used as biogas; and the sludge discharged during the process is collected into a sludge storage pool, the collected sludge is subjected to reactions sequentially in a concentration pool and a digestion pool, dewatering drying is performed, and finally landfill is performed. The invention provides the garbage leachate treatment method, wherein the main biochemical treatment method adopts UASB and SBR, and then the deep treatment is performed through ozone oxidation, such that the ammonia nitrogen concentrationin the leachate can be substantially reduced so as to achieve the standard discharge of the effluent.
Description
technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment method for garbage permeate. Background technique [0002] With the acceleration of the pace of urbanization in my country and the rapid increase of urban population, the amount of urban domestic waste is increasing day by day, and the phenomenon of environmental pollution by waste is also becoming more and more serious. Landfill leachate is a special kind of wastewater, and its treatment investment and operating costs are much higher than those of general urban sewage and industrial wastewater. This is mainly due to the complex composition of landfill leachate, high ammonia nitrogen concentration, and high organic matter concentration. There are many devices and the processing time is long. Since the landfill leachate has undergone anaerobic process in the waste body, its biochemical properties are relatively poor, and the residence time of biological treatment is lo...
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IPC IPC(8): C02F9/14C02F103/06
CPCC02F9/00C02F2103/06C02F2001/007C02F1/78C02F3/2846C02F3/1263C02F1/283C02F1/001
Inventor 陈周君
Owner TIANHE COLLEGE GUANGDONG POLYTECHNIC NORMAL UNIV