Wastewater precipitation equipment for preliminary treatment of wastewater

Abstract

The invention discloses wastewater precipitation equipment for preliminary treatment of wastewater. The equipment comprises a treatment box, wherein a precipitation cavity with an upward opening is formed in the treatment box, a power cavity communicated with the precipitation cavity is formed in the inner wall of the precipitation cavity, a sliding piston capable of sliding left and right is arranged in the power cavity, a connecting rod is fixedly arranged on the end surface of one side, close to the precipitation cavity, of the sliding piston, a filtering screen is arranged in the precipitation cavity, and four corners of the filtering screen are fixedly connected with the connecting rod. According to the invention, a precipitation method and a filtration method are combined; the bottomof the precipitation tank adopts the filtering screen, and after the impurities in wastewater are fully precipitated, the filtering screen can be deformed into a funnel shape, so that the impuritiesare gathered to the middle position of the filtering screen, and the wastewater is discharged through the periphery of the filtering screen; and the impurities can be automatically removed, so that the problems that the filtering screen is too large in occupied space and the impurities are too dispersed and difficult to remove are solved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater sedimentation device for preliminary wastewater treatment. Background technique [0002] In modern industry, it is inevitable to produce wastewater, which is one of the most important sources of water body pollution. For most wastewater, its treatment can be classified into three-level treatment. In the first-level pretreatment, it is mainly To remove larger particles in wastewater, the commonly used treatment methods are sedimentation and filtration. However, when the sedimented wastewater is processed in the next step, it is easy to stir up impurities at the bottom of the pool during the transfer of the wastewater, which greatly reduces the effect of the previous sedimentation treatment. The filtration method is based on the diameter of the particles in the wastewater, and selects a gauze with a suitable mesh to filter the wastewater. The particles can...

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Problems solved by technology

[0002] In modern industry, it is inevitable to produce wastewater, which is one of the most important sources of water body pollution. For most wastewater, its treatment can be classified into three-level treatment. In the first-level pretreatment, it is mainly To remove larger particles in wastewater, the commonly used treatment methods are sedimentation and filtration. However, when the sedimented wastewater is processed in the next step, it is easy to stir up impurities at the bottom of the pool during the transfer of the wastewater, which greatly reduces the effect of the previous sedimentation treatment. The filtration method is based on the diameter of the particles in the wastewater, and selects a gauze with a suitable mesh to filter the wastewater. The particles can easily block the filter. In order to ensure the flow and reduce the impact of the blockage on the flow rate, the area of ​​the filter is often made large. It is very large, which not only takes up space, but also filters out impurities and disperses, which is not easy to clean. In view of the above problems, the present invention is proposed

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