Sewage treatment machine and sewage treatment method

Abstract

The invention discloses a sewage treatment machine which comprises a box body, and the box body comprises a bottom plate, a front side plate, a rear side plate, a left side plate and a right side plate; the box body is provided with a first partition plate connected with the left side plate and the right side plate, and the interior of the box body is divided into a coarse filtering bin located onthe rear side and an ultrafiltration bin located on the front side through the first partition plate; an air floating type filtering device is arranged in the coarse filtering bin, and a white waterinlet is formed in the bottom of the coarse filtering bin; a filter disc type filter device is arranged in the ultrafiltration bin, a clear liquid outlet is formed in the bottom of the filter disc type filter device, and a middle liquid through hole is formed in the first partition plate. The sewage treatment machine can perform rough filtration and ultrafiltration on white water to directly produce clear liquid meeting requirements, and has the advantages of small occupied space and high water treatment efficiency. The invention also discloses a sewage treatment method which simplifies the white water treatment process and has the advantages of high sewage treatment efficiency and high sewage treatment quality.

Description

technical field [0001] The invention relates to the field of sewage treatment equipment, in particular to a sewage treatment machine and a sewage treatment method. Background technique [0002] The white water produced in the traditional papermaking process contains a large amount of fine fibers and chemical residues. Enterprises spend a lot of money on the discharge of industrial sewage, pulp recovery and sewage treatment, which is a huge waste of material and financial resources. At present, the sewage treatment process of papermaking enterprises is as follows: first coarsely filter the white water to filter out some large solid suspended matter, such as using an air flotation filter to float the white water to separate the white water from solid and liquid, and then remove the suspended matter floating on the upper layer Cleaning; the liquid after the coarse filtration passes through the ultrafiltration device to remove the fine solid fibers and gases in the entity again ...

AI Technical Summary

Problems solved by technology

In the prior art, the air flotation filter device and the ultrafiltration device are installed separately, which not only takes up a lot of space in the workshop, but also often needs to increase or decrease many intermediate processes in the process of moving the intermediate liquid after coarse filtration to the ultrafiltration device, which increases manpower. , material resources, so that the cost of water treatment remains high

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