A treatment method for landfill leachate
A technology of landfill leachate and treatment method, which is applied in the directions of aerobic and anaerobic process treatment, can solve the problems of difficult to reach the standard stably, serious membrane pollution, poor effluent quality, etc., to reduce drug consumption, improve treatment capacity, increase The effect of biological species
Active Publication Date: 2018-04-03
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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Problems solved by technology
Using aerobic membrane bioreactor (MBR) to treat aged leachate effluent water quality is poor, NH 3 -N, TN and other indicators are difficult to meet the standards stably, membrane fouling is serious, cleaning is frequent, and a large amount of carbon source needs to be added, and the operating cost is very high
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[0027] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0028] Such as figure 1 As shown, in the treatment method for landfill leachate provided by the present invention, landfill leachate is treated through a fluidized biological carrier reactor.
[0029] The fluidized biocarrier reactor comprises the first anoxic reaction zone 1, the first aerobic reaction zone 2, the first adjustable zone 3, the second anoxic reaction zone 4 and the second adjustable zone 5 connected in series in sequence; The first adjustable zone 3 and the second adjustable zone 5 can respectively realize switching between anoxic and aerobic states, and can be adjusted according to specific conditions during actual operation.
[0030]The first anoxic reaction zone 1 , the first aerobic reaction zone 2 , the first adjustable zone 3 , the second anoxic reaction zone 4 and the second adjustable zone 5 respectively contain flui...
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The invention discloses a treatment method for landfill leachate. According to the method, the landfill leachate is treated by a fluidized-biological-carrier reactor; the fluidized-biological-carrier reactor contains a first anoxic reaction zone, a first aerobic reaction zone, a first adjustable zone, a second anoxic reaction zone and a second adjustable zone which are sequentially connected in series; and the first adjustable zone and the second adjustable zone respectively can realize the switchover between anoxic and aerobic states. The first anoxic reaction zone, the first aerobic reaction zone, the first adjustable zone, the second anoxic reaction zone and the second adjustable zone respectively contain fluidized biological carriers; and the fluidized biological carriers are in a suspended fluidized state, so that microorganisms can grow on biological fillers in an attached manner, and the microorganisms can coexist in forms of both a suspended state and a fixed state. According to the treatment method for the landfill leachate, provided by the invention, the disadvantages in the traditional treatment of aged leachate in refuse landfills can be overcome, and stable standard-reaching discharging is realized.
Description
technical field [0001] The invention relates to a method for treating sewage, in particular to a method for treating aged leachate in landfills. Background technique [0002] Landfill leachate is a kind of high-concentration organic wastewater, and its chemical characteristics are closely related to the waste composition, landfill method, landfill age, and landfill environmental conditions. According to the landfill time, the leachate can be simply divided into young leachate (<5 years), middle-aged leachate (5-10 years), and old leachate (>10 years). [0003] At this stage, among the more mature landfill leachate treatment processes on the market, anaerobic reactors or high-load bioreactors are generally used to pretreat leachate; aerobic membrane bioreactors (MBR) are used as the main biological treatment process; "Nanofiltration + reverse osmosis" as an advanced treatment process. [0004] The actual operation shows that the treatment system built according to the...
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IPC IPC(8): C02F3/30
Inventor 熊建英郑正郭葵香高斌王华金
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP