Electrically-controlled automatic adjustable overflow weir intercepting well

Abstract

The invention discloses an electrically-controlled automatic adjustable overflow weir intercepting well comprising a hollow well body. An adjustable arc overflow weir is disposed inside the well body. A telescopic bar is disposed inside the overflow weir. A combiner pipe, an intercepting trunk and an overflow pipe with an orifice tangent with the inner wall of the well body are connected to the well body. A top opening of the well body is covered with an intercepting well cover. The overflow weir is adjustable, the water level in the intercepting well can be controlled, and overflow can be controlled timely; in addition, the intercepting trunk buried is shallower than the traditional trunk, so that construction cost is reduced and construction is easier. The overflow weir is in an arc shape; therefore, on one hand, water passage length of the overflow weir is increased and water flow is increased under the same conditions; on the other hand, wastewater in the intercepting trunk flows by the intercepting well, the water passage section changes in short distance, water speed changes soon, disturbances occur, sinking of particles in the wastewater is disturbed, and sedimentation of sludge in the intercepting well is prevented.

Description

technical field [0001] The invention relates to an overflow weir type sewage interception well in a combined drainage system in the field of environmental protection, in particular to an electronically controlled and automatically adjustable overflow weir interception well. Background technique [0002] When the urban direct discharge combined drainage system is dry, all the sewage from the combined sewage pipe network enters the sewage treatment plant, but when it rains, due to the limited processing capacity of the sewage treatment plant, part of the combined sewage must be discharged into the water body, thus It will cause serious water and natural environment pollution. In order to protect the environment and reduce pollution, the common countermeasure is to transform it into an intercepting combined drainage system, and the intercepting well is one of the important auxiliary structures. There are three types of interception wells commonly used now: jumping type, trough...

AI Technical Summary

Problems solved by technology

no 0 Too small can not effectively intercept sewage, n 0 Excessive interception of a large amount of necessary rainwater into the interception main pipe will cause pressure on the treatment capacity of the sewage plant, and it is difficult to determine the appropriate n in the design process according to the actual situation 0

Therefore, the existing interception wells cannot be timely controlled according to the amount of rainwater in order to achieve the best interception effect

In addition, the trough and jump interception wells have a common disadvantage: when the instantaneous sewage water flow is large, overflow may occur, and the sewage interception effect is not ideal

Although the overflow weir interception well can overcome this shortcoming, when the rainfall is large and lasts for a long time, its sewage interception effect is relatively poor, and it will mix the rainwater with larger pollutants in the early stage and the rainwater with less pollutants in the later stage After overflowing to the water body, although it has played the role of interception, it has not played the role of maximum pollution interception

[0003] The traditional interception wells are all gravity flow interception wells, and the burial depth of the confluence pipes and channels is generally very large, especially in the rivers near the city.

However, in some cases, in order to reduce construction difficulty and cost, the interception main pipe with a relatively small buried depth is often used for the closure of the original straight-line combined pipe and channel, but at this stage, the three traditional gravity flow interception wells are difficult to meet the requirements

Although in the process of interception well reconstruction, there are pressure-bearing interception wells with sewage interception outlet pipe elevation higher than water inlet pipe canal elevation, but such interception wells are prone to problems such as siltation and poor drainage.

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