Rainwater runoff treatment matrix and rainwater bioretention pond constructed by using matrix
A rainwater and substrate technology, applied in runoff/rainwater treatment, drainage structures, water/sewage treatment, etc., can solve the problems of limited electron supply capacity, inability to popularize and apply, increase hydraulic retention time and volume of sewage facilities, etc., and achieve high structure Strength and chemical stability, sustained and stable denitrification and phosphorus removal, and matrix stabilization effects
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[0025] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0026] The concept of the present invention is: compared with sewage, rainwater has completely different hydraulic and water quality conditions and physical and chemical properties. First, the concentration level of rainwater pollutants is lower, which can adapt to the characteristics of less electronic supply in the pyrite system; second, the rainwater treatment facilities are usually operated intermittently, and the dry period can provide sufficient hydraulic retention time, so as to meet the characteristics of pyrite system. The characteristics of long residence time required for denitrification; third, pyrite denitrification is mainly autotrophic denitrification, and its sludge yield is lower, which helps to maintain good hydraulic performance of bioretention, which is in line with low maintenance of bioretention facilities Fourth, pyrite is cheap and dur...
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