Rainwater collecting device

Abstract

The invention discloses a rainwater collecting device for discharging rainwater with high pollution concentration and then collecting clean rainwater, which can effectively discharge the rainwater with high pollutant concentration. The minimum water flow time from pollutant concentration detection equipment in the rainwater collecting device to a super-standard rainwater flow abandoning opening-closing mechanism is greater than or equal to the sum of the maximum opening time of the super-standard rainwater flow abandoning opening-closing mechanism, the maximum closing time of the super-standard rainwater flow abandoning opening-closing mechanism and the reaction time of a control module. The rainwater collecting device can ensure that high-concentration polluted rainwater is discharged from rainwater runoff in time and the clean rainwater is selectively collected so as to improve the clean water collecting effect, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to a rainwater collection device, in particular to a rainwater collection device for selectively collecting clean rainwater after discharging rainwater with a relatively high pollutant concentration in surface rainwater runoff. Background technique [0002] During the rainfall process, due to the randomness of the rainfall process and the uncertainty of the accumulation of surface pollutants, the pollutant concentration changes caused by rainfall runoff scouring surface pollutants show obvious random fluctuation characteristics. Therefore, when collecting rainwater, it is necessary to The concentration of pollutants in the rainwater is detected, so that the rainwater with a large concentration of pollutants is excluded and only clean rainwater is collected. [0003] Existing equipment that can detect rainwater runoff and selectively collect clean rainwater includes an initial rainwater discharge pipe, a valve is arranged on the di...

AI Technical Summary

Problems solved by technology

In the prior art, the SS concentration detector installed at the valve detects the concentration value at a point upstream of the valve, without the function of coordinating the opening and closing process of the valve and the random fluctuation process of the pollutant concentration

In actual operation, the conversion valve may perform frequent opening and closing actions due to random fluctuations in the concentration of pollutants and will not completely close or open the valve, which will directly cause pollutants in the initial rainwater to leak into the rainwater collection tank, causing collection pollution of clean stormwater, or missed collection of clean stormwater runoff

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