Multi-effect staged first rain storage pond

Abstract

The invention discloses a multi-effect staged first rain storage pond. The multi-effect staged first rain storage pond comprises a flow dividing device, an artificial wetland and a sewage treatment plant, wherein the flow dividing device is used for collecting first rain and dividing the first rain into a storage pond group, and the artificial wetland is used for treating the first rain; the flow dividing device comprises a rainwater pipe network group which communicates with the artificial wetland and a first sewage pipe network which communicates with the artificial wetland and the sewage treatment plant; and the storage pond group comprises a plurality of water storage pools which are arranged on the rainwater pipe network group at intervals along the water flow direction, a plurality of first rain inlet pipes which are provided with second gates and correspondingly communicate with the water storage pools and the rainwater pipe network group respectively and a plurality of second sewage pipe networks which correspondingly communicate with the water storage pools and the first sewage pipe network respectively, and an integrated pump station is arranged in any water storage pool. According to the first rain storage pond, rainwater with different concentration gradients is stored in different water storage pools, and the rainwater in the water storage pools is not interfered with one another, so that the water quality of an integrally collected water body cannot be influenced by the water quality deterioration, and the sewage treatment cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of environmental engineering. More specifically, the present invention relates to a multi-effect graded primary rain storage pond. Background technique [0002] The existing primary rain storage tanks are mainly divided into decentralized small storage tanks and centralized large storage tanks according to different construction scales. In practical engineering applications, decentralized small storage tanks have certain requirements for vacant land use, and it is difficult to build small storage tanks in multiple places; centralized large storage tanks have the problem of insufficient energy saving during use. At the same time, in the design process of the above-mentioned storage tank, the determination of the tank capacity is based on the maximum value determined by the local regional characteristics and rainfall type, and is designed to meet the most unfavorable conditions. Due to the uncertainty and ran...

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Problems solved by technology

In practical engineering applications, decentralized small-scale storage tanks have certain requirements for vacant land use, and it is difficult to build small-scale storage tanks in multiple places; centralized large-scale storage tanks have the problem of insufficient energy saving during use

At the same time, in the design process of the above-mentioned storage tank, the determination of the tank capacity is based on the maximum value determined by the local regional characteristics and rainfall type, and is designed to meet the most unfavorable conditions. Due to the uncertainty and randomness of rainfall, it is difficult to fully use Operational efficiency of storage tanks

In addition, in the actual application of the storage tank, the concentration of pollutants at different rainfall times shows certain dynamic changes, especially the concentration of pollutants in the runoff is relatively high at the beginning of the rainfall. If the rainwater with different gradient concentrations is mixed and stored in the storage tank , will inevitably increase the cost of sewage treatment

[0003] In addition, the existing storage tanks have a single function, and are generally only used for temporary storage of initial rainwater, with little other use value. Especially in sunny days, the storage tanks are basically in a state of shelving, which greatly wastes resources; Some storage tanks also have disadvantages such as low collection rate of high-concentration rainwater, extensive pollutant treatment mode, low operating efficiency, high equipment failure rate, high operation and maintenance costs, and relatively fixed location settings.

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