A device for filtering and treating waste water in papermaking industry

Abstract

The invention relates to the technical field of papermaking wastewater filtration treatment, in particular to a papermaking industrial wastewater filtration treatment device, which includes a treatment box, a primary filter mechanism, a secondary filter mechanism and a scraping mechanism. The treatment box is open at both ends of the upper and lower ends With a back-shaped structure, the inner wall of the processing box is provided with a primary filter mechanism and a secondary filter mechanism sequentially from top to bottom, and a scraping mechanism is provided on the secondary filter mechanism. The first-stage filter mechanism and the second-stage filter mechanism adopted in the present invention filter the papermaking wastewater in multiple stages, thereby improving the filtration quality of the wastewater. The scraper mechanism and the scraper plate are removed, so that the residual paper scraps after the No. 2 filter mechanism and the No. 1 filter mechanism filter the wastewater are cleaned, and the paper scraps are easily adhered to the No. 2 filter mechanism and the No. 1 filter mechanism to cause waste water to be filtered. The problem of reduced efficiency.

Description

technical field [0001] The invention relates to the technical field of papermaking wastewater filtration treatment, in particular to a papermaking industry wastewater filtration treatment device. Background technique [0002] Papermaking industrial wastewater refers to the wastewater generated during the pulping and papermaking process, including pulping and cooking waste liquid, washing wastewater, bleaching wastewater and paper machine white water, etc. Papermaking wastewater has complex components and poor biochemical properties, and is difficult to treat. Therefore, When papermaking wastewater is discharged, it must be filtered. [0003] At present, the following problems will occur in the process of filtering wastewater in the papermaking industry: 1. Due to the different sizes of paper scraps in papermaking wastewater, and the paper scraps adhere to the filter mechanism and are difficult to clean, and at the same time, the paper scraps are easy to block the filter hole...

AI Technical Summary

Problems solved by technology

[0003] At present, the following problems will occur in the process of filtering wastewater in the papermaking industry: 1. Due to the different sizes of paper scraps in papermaking wastewater, and the paper scraps adhere to the filter mechanism and are difficult to clean, and at the same time, the paper scraps are easy to block the filter holes, reducing the Efficiency of filter mechanism for wastewater filtration

[0004] 2. Most of the waste water is filtered by a single filter, so that the smaller paper scraps are directly discharged through the filter mechanism, resulting in the treated waste water not meeting the discharge standard

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