Urban sewage treatment system
A technology for treating system and urban sewage, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of low efficiency and high cost
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[0020] Municipal sewage treatment systems, such as Figure 1-Figure 3 As shown, it includes a regulating tank 4, a treatment tank 1, a sludge tank 5 and a sludge concentration tank 6 connected in sequence through pipelines. After the sewage is regulated and stirred by the regulating tank 4, it enters the treatment tank 1 through the water inlet 15, and the treatment tank 1 A stirring device 2 is provided on the rear side wall of the tank, and the stirring device 2 includes a stirring shaft 21 fixed on the rear side wall of the treatment tank 1. The stirring shaft 21 is provided with a stirring plate that can rotate around the stirring shaft 21, and the stirring plate is wound around the stirring shaft. The first stirring blade 22, the second stirring blade 23, the third stirring blade 24 and the fourth stirring blade 25 which can rotate around the stirring shaft 21 are fixed sequentially in the circumferential direction of the disk, and the first stirring blade 21 and the third...
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