Powerless biological sewage treatment system
A technology of sewage treatment system and domestic sewage, applied in the direction of biological water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of river water pollution and high operating costs, and achieve landscape Good effect, lower construction costs, lower operating costs
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[0009] The specific content of the present invention will be described in detail in conjunction with the accompanying drawings. An unpowered ecological sewage treatment system, the domestic sewage is collected into the water distribution tank after passing through the urban household septic tank, and then evenly enters the first-level horizontal subsurface flow artificial wetland 1 through the perforated flower wall on one side of the water distribution tank, and the first-level horizontal underflow artificial wetland 1 Homogeneous gravel 2 with a particle size of 50-70 mm and a thickness of 1.2 m is used as filler, reed 3 is used for planting plants, and a water collection system is provided at the bottom of the homogeneous gravel 2. The water collection system adopts perforated pipe 4 and perforated pipe 4. The water outlet of the water collection well 5 communicates with the water collection well 5, and the side opposite to the opening of the water collection well 5 is provi...
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