Initial rainwater automatic discarding device and discarding method suitable for sponge city

Abstract

The invention discloses an automatic initial rainwater discarding device and discarding method suitable for a sponge city, and the device comprises an assembly bottom plate, the top of the assembly bottom plate is fixedly provided with a rainwater discarding mechanism, a rainwater stirring mechanism and a filtering mechanism, and the rainwater discarding mechanism comprises a reinforcing plate; by arranging the rainwater discarding mechanism and installing two sets of liquid circulation pipelines in the mechanism, when rainwater is acidic, a PH sensor transmits a signal into a controller, one water pump A is controlled to do work, mixed liquid in a water storage tank A is rapidly pumped, and the rainwater discarding mechanism is connected with the rainwater discarding mechanism. And finally, the acid liquid can be gradually discharged out of the mechanism from the diffusion holes, when the rainfall reaches the later period and the PH value of the rainwater is gradually normal, the rainwater is conveyed into another water pump A through the controller again, and the clean rainwater is continuously conveyed into a water storage tank B through a pipeline in the mechanism.

Description

technical field [0001] The invention relates to the technical field of sponge city water storage equipment, in particular to an initial rainwater automatic discarding device and a discarding method suitable for sponge cities. Background technique [0002] Sponge city is a new generation of urban stormwater management concept. It means that the city can be like a sponge and has good flexibility in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called a "water elastic city". The international term is "low-impact development of rainwater system construction", which absorbs, stores, seeps and purifies water when it rains, and releases and utilizes the stored water when needed, so as to realize the free migration of rainwater in the city, and the free movement of rainwater from the ecosystem. Starting from services, building water ecological infrastructure across scales and combining various types of specific technologi...

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Problems solved by technology

[0003] The existing technology usually has the following disadvantages: when it rains outside, the rainwater in the previous period will fuse with the harmful elements in the air, resulting in a low pH value of the rainwater, making the rainwater acidic, and after entering the device, it must be discarded. However, due to the single internal structure of the device in the above patent, it only contains an independent water delivery pipe. When the device is discarding acidic rainwater, the liquid is more viscous than ordinary water after the rainwater reacts with other substances. Furthermore, the mixed acidic liquid will partly hang on the wall of the pipe, and when the water pipeline is opened, the acidic liquid remaining in the pipe will be merged into the clean rainwater again

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