Municipal rainwater storage system

Abstract

The invention discloses a municipal rainwater storage system. According to the technical scheme, the municipal rainwater storage system is characterized by comprising a water collecting well, a rainwater port, a discarding device, a storage pond and a clear water reservoir; a permeation plate, a nonwoven geotextile fabric and a sand filter layer are sequentially laid above the clear water reservoir, and the sand filter layer comprises a coarse filter material anthracite coal layer, a fine filter material quartz sand layer and a fine filter material garnet layer from top to bottom in sequence; an overflow port is formed in the clear water reservoir, and the overflow port is used for being connected with a municipal water pipe; a lift pump is arranged in the storage pond, rainwater in the storage pond is extracted through the lift pump when the rainfall is abundant, and rainwater in the storage pond is subjected to impurity and organic matter filtration through the coarse filter material anthracite coal layer, the fine filter material quartz sand layer and the fine filter material garnet layer, and then precipitates in the clear water reservoir; and when the amount of rainwater in the clear water reservoir is too large, rainwater overflows from the overflow port so as to be delivered to the municipal water pipe to be used for municipal greening irrigation, watering carts, urban waterscapes and the like. The quality stability of rainwater treated in this way is high.

Description

technical field [0001] The invention relates to the technical field of municipal rainwater collection and treatment, in particular to a municipal rainwater regulation and storage system. Background technique [0002] With the continuous increase in the proportion of urban sewage interception and treatment, point source pollution has been effectively controlled, and non-point source pollution caused by rainwater runoff has become the main cause of water pollution. [0003] Considering the discontinuous and explosive transport of runoff pollutants, the proportion of its pollution load will increase exponentially in a short period of time during the rainy season, surpassing point source pollution, causing impact on urban water bodies, and seriously restricting the quality of urban water environment The thorough improvement of my country's rainwater runoff caused by pollution is also very serious. Non-point source pollution has become one of the main reasons for the deterioratio...

AI Technical Summary

Problems solved by technology

Non-point source pollution has become one of the main reasons for the deterioration of water quality. At the same time, the rainwater runoff carries a large amount of pollutants into the urban water system and also causes serious pollution. Among them, the organic matter carried in the rainwater runoff is discharged into the urban water system. The water quality of the rainwater Unstable, easy to cause eutrophication of water bodies in urban water systems, therefore, there are certain improvements

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