Device and method for rapidly starting and stably maintaining municipal sewage short-cut nitrification on basis of triclosan
A technology for short-range nitrification of urban sewage, applied in biological treatment devices, chemical instruments and methods, biological water/sewage treatment, etc., can solve unresearched, short-range nitrification and other problems, achieve simple process, avoid sludge bulking, and facilitate The effect of the operation
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[0031] Both the short-cut nitrification device and the triclosan sludge treatment device adopted in the method are SBR reactors, the material is plexiglass, the effective volume is 9L, and the drainage ratio of the short-cut nitrification reactor is 50%. An aeration device is installed at the bottom of the reactor, the air is compressed by the aeration pump, and the air is released by the microporous aeration head. The water is fed by the peristaltic pump, the water is discharged by the electric drain valve, and the sludge is returned by the return peristaltic pump, which is automatically controlled by the time-controlled timer.
[0032] The activated sludge inoculated in the reactor comes from the excess sludge in the secondary sedimentation tank of a municipal sewage treatment plant in Beijing. The retrieved excess sludge is inoculated into the reactor after repeated cleaning. After inoculation, the sludge concentration is 3000-3500mg / L. During the operation of the reactor...
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