Multi-stage sewage treatment equipment and treatment method for hydraulic engineering

Abstract

The invention discloses multi-stage sewage treatment equipment and treatment method for water conservancy projects in the technical field of sewage treatment. The multi-stage sewage treatment equipment comprises a shell, an opening is formed in the top of the shell, and a large garbage filter screen used for filtering large impurities in sewage is fixedly connected to the upper portion of the inner wall of the shell. An adding opening is formed in the position, located below the large garbage filter screen, of the inner wall of the shell, and the adding opening is used for adding a sewage treatment agent into sewage. The middle part of the inner wall of the shell is fixedly connected with a biological sludge filter screen used for filtering biological sludge generated by reaction. The large garbage filter screen and the biological mud filter screen divide the shell into three parts. While sewage is filtered, a conveyor belt is used to drive an arc-shaped scraping plate to intermittently clean sludge and reaction precipitates on the surface of the biological sludge filter screen, so that meshes on the surface of the filter screen cannot be blocked, and the filter screen can keep an optimal filtering effect in the whole sewage filtering process.

Description

Technical field [0001] The present invention relates to the field of sewage treatment, in particular multi-stage sewage treatment equipment and treatment methods for water conservancy engineering. Background technique [0002] Water conservancy projects are used to control and distribute surface water and groundwater to naturally, to achieve projects built by removing purposes. Also known as water projects. Water is a valuable resource for human production and life, but its natural state is not fully in line with human needs. Only the construction of water conservancy projects can control water, prevent flood disasters, and regulate and distribute water volume to meet the needs of people's lives and production on water resources. [0003] The invention disclosed in the prior art multi-stage sewage treatment equipment and treatment methods for treatment, and the invention has a Chinese patent, which discloses a multi-stage sewage treatment apparatus and treatment method for water ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-stage sewage treatment equipment and treatment method for water conservancy projects, to solve the above-mentioned background technology. There will be accumulation of sundries and sludge on the net, which will cause the mesh of the filter to be blocked. When cleaning, it is generally necessary to wait until the end of the filter before cleaning the filter. In order to maintain the best filtering effect, resulting in poor subsequent filtering effect and long filtering time

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