Primary rainwater purification device

Abstract

The invention discloses a primary rainwater purification device which comprises a finished product box, a cover plate, an inner chamber and an outer chamber, wherein a sewage intercepting basket is fixed at the middle part of the inner chamber; a water inlet pipe communicated with external sewage is arranged at the position, above the sewage intercepting basket, in the inner chamber; an inner overflow port and oil absorption cotton attached to the inner wall of the inner chamber are arranged in a region, at the lower part of the sewage intercepting basket, of the inner chamber, and the inner overflow port is higher than the oil absorption cotton; a seepage hole is formed in a bottom plate of the finished product box; a reinforced filtering material bag is arranged in the region, in the inner chamber, above the bottom plate of the finished product box; and common filtering filler is arranged in the region, between the outer chamber and the inner wall of the finished product box, above the bottom plate of the finished product box. The primary rainwater purification device can effectively control non-point source pollution in light rain, and the filtered water can directly infiltrate for nourishing the green area; and the primary rainwater purification device can economically and effectively control non-point source pollution in heavy rain and can keep drainage unblocked. A plurality of assemblies are synergistic, so that installation and maintenance are convenient.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a primary rainwater purification device. Background technique [0002] In recent years, the national economy has developed rapidly, but due to natural, historical and cognitive reasons, it has not gotten rid of the traditional development model of high investment, high consumption, heavy pollution and low output for a long time, resulting in serious Environmental pollution and ecological damage, 70% of the rivers in various cities are black and smelly water bodies. Urban black and odorous water not only brings extremely poor sensory experience to the masses, but also a prominent water environment problem that directly affects the production and life of the masses. [0003] On December 12, 2013, General Secretary Xi Jinping said at the Central Urbanization Work Conference: "When upgrading the urban drainage system, we must give priority to retaining limited rainwater, give priorit...

AI Technical Summary

Problems solved by technology

In the process of rapid urbanization, land is rapidly developed and utilized on a large scale, but water pollution control and urban management are relatively lagging behind. A large amount of nitrogen and phosphorus nutrients, microorganisms, heavy metals and organic toxic substances have accumulated on the surface of urbanized areas. During heavy rains, these Substances are washed into runoff, creating non-point source pollution

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