Upflow anaerobic sludge blanket reactor
A flow-type anaerobic sludge and bed reactor technology, applied in the direction of anaerobic digestion treatment, etc., can solve the problems of difficult sludge fall, affecting the mass transfer of sewage and sludge, etc., and achieve the effect of improving the treatment effect
Inactive Publication Date: 2009-11-04
NANCHANG UNIV
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Problems solved by technology
The main disadvantages of this reactor are: (1) After the sludge settles in the sedimentation area, it slides back to the sludge suspension area through the inclined plate, and the biogas in the sludge suspension area is relatively large, and the rising biogas is easy to The falling sludge is brought out again, making it difficult for the sludge to fall back into the sludge bed; (2) Since the sludge does not flow back into the sludge bed, the influent water is at the bottom of the sludge bed, so that the sludge entering It is difficult for the sewage to come into contact with the returning sludge, which affects the mass transfer between sewage and sludge
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[0008] Such as figure 1 Shown, the present invention is realized like this, and it comprises reactor 1, sludge bed 2, sludge suspension layer district 3, gas collecting hood 4, connecting pipe 5, sludge rising pipe 6, gas collecting tank 7, outlet Air pipe 8, sludge return pipe 9, outlet channel 10, air chamber 11, characterized in that the lower end of reactor 1 is connected with sludge bed 2, the upper end of sludge bed 2 is connected with sludge suspension layer area 3, and the upper end of reactor 1 There are several gas-collecting hoods 4 connected, and the gas-collecting hoods 4 are connected through connecting pipes 5. The gas-collecting hoods 5 are connected to the gas-collecting tank 7 through several sludge rising pipes 6, and the upper and lower ends of the gas-collecting tank 7 correspond to the connecting pipes respectively. There is an air outlet pipe 8 and a sludge return pipe 9 , and an outlet channel 10 and an air chamber 11 are left between both sides of the ...
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An upflow anaerobic sludge blanket reactor is characterized in that: a sludge bed is connected with the lower end of the reactor, a suspended sludge layer region is connected with the upper end of the sludge bed, several gas-collecting hoods are connected with the upper end of the reactor, gas-collecting hoods are connected with each other by communicating pipes, the gas-collecting hoods are connected with an air collector by a plurality of upflow sludge pipes, the upper end and lower end of the air collector are separately connected with an escape pipe and an sludge return pipe, and a effluent ditch and an air chamber are arranged between the two sides of the gas-collecting hoods and the reactor. The invention has the following technical effects: by using the reactor, the sludge which is taken out with biogas can be refluxed to the bottom of the reactor through a return pipe, but the sludge can be only refluxed to the upper part of a reacting region of the reactor with a traditional reactor; the sludge is refluxed to the bottom and mixed sufficiently with inflow, thus greatly improving the treatment effect of waste water.
Description
technical field [0001] The invention relates to a sludge bed reactor, in particular to an upflow anaerobic sludge bed reactor. Background technique [0002] The upflow anaerobic sludge bed (UASB) reactor was developed by Dutch scholar G.Lettinga et al. in the early 1970s. Wastewater enters the reactor from the bottom of the pool, and the mixed liquid enters the sedimentation area for solid-liquid separation after passing through the reaction area after gas separation. The clarified and treated water is drained from the outlet channel, and the precipitated microbial solids, that is, anaerobic sludge, are automatically returned to the reaction area by gravity, and the biogas collected in the gas collection chamber is discharged from the reactor through the biogas pipe. UASB reactor has simple structure, high volume load, high processing efficiency, easy operation and maintenance. The main disadvantages of this reactor are: (1) After the sludge settles in the sedimentation ar...
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IPC IPC(8): C02F3/28
Inventor 王白杨
Owner NANCHANG UNIV