Sponge combination system applicable to old communities and rainwater treatment method of sponge combination system
A combined system and community technology, applied in waterway systems, sewage removal, roof drainage, etc., can solve the problems of slow sponge transformation progress and high construction costs, and achieve the effects of enhancing filtration and purification efficiency, shortening the transformation period, and increasing storage capacity.
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[0056] Specific implementation method: in the early stage of rainfall, choose to close the pressure valve 36 at the bottom of the rainwater tank 3, open the water stop valve 33 at the top of the rainwater tank 3, the rainwater from the roof 1 of the residential area will enter the rainwater tank 3 after passing through the rainwater pipe 2, and pass through it vertically from top to bottom Sand and gravel filter layer 371, geotextile 373, pebble filter layer 372 and steel wire mesh 374, then pass through the drainage hole 311 at the bottom of the partition plate 31, enter the other side of the partition plate 31, and then pass through the steel wire mesh vertically from bottom to top 374, pebble filter layer 372, geotextile 373 and gravel filter layer 371 are discharged through the upper drain pipe 34; in the later stage of rainfall, the water stop valve 33 is selected to be closed, and when the rainwater accumulated in the rainwater tank 3 reaches a certain amount, the pressure...
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