Spiral-flow type hydraulically controlled rainwater intercepting and abandoning switch well system

Abstract

The invention discloses a spiral-flow type hydraulically controlled rainwater intercepting and abandoning switch well system which comprises a spiral-flow type sand sediment trap and a rainwater intercepting trunk canal, wherein a rainwater inlet pipe for collecting rainwater in the spiral-flow type sand sediment trap, a rainwater outlet pipe which discharges rainwater primarily treated by the spiral-flow type sand sediment trap and an overflow pipe of a rainwater abandoned flow entering into the spiral-flow type sand sediment trap are arranged on the side wall of the spiral-flow type sand sediment trap. The installation position of the overflow pipe is higher than the installation positions of the rainwater inlet and outlet pipes. The water outlet of the rainwater outlet pipe is communicated with the rainwater intercepting trunk canal, and a water level control adjustable valve for controlling open and close of the water outlet of the rainwater outlet pipe according to the water level in the rainwater intercepting trunk canal is arranged on the side wall of the rainwater intercepting trunk canal. The spiral-flow type sand sediment trap can settle sand in rainwater entering into the spiral-flow type sand sediment trap to remove sediment and particle organic matters out of rainwater so as to reduce the environmental pollution caused by the abandoned rainwater and probable sedimentation of the trunk canal, caused by particles in the intercepted rainwater.

Description

technical field [0001] The invention relates to the technical field of urban initial rainwater treatment, in particular to a swirl-type hydraulically controlled rainwater interception and abandonment switching well system. [0002] Background technique [0003] In recent years, the pollution of the water environment caused by the initial rainwater in the city has aroused widespread concern from all walks of life. The interception and treatment projects of the initial urban rainwater are also carried out in major cities in an orderly manner. The existing initial rainwater interception wells mainly include jumping weir type, side flow weir type, fixed weir type and anti-backflow type. [0004] The interception wells of these structures mainly control the interception of rainwater through the amount of rainwater inflow or water level, and are suitable for setting between the rainwater branch pipe and the primary rainwater collection main pipe to realize the front-end intercep...

AI Technical Summary

Problems solved by technology

At the same time, when the main canal has no remaining capacity to receive the incoming water from the initial rainwater collection main pipe, in order to prevent backflow and large-scale overflow of the intercepted main canal, it is necessary to discard the incoming water from the initial rainwater collection main pipe, and the high-pollutant flow Concentration of initial rainwater will pollute the environment

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