Pulp wastewater treatment processing method

Abstract

The invention relates to a paper pulp wastewater treatment processing method, which comprises a bottom plate, a filtering device and a collecting device, wherein the filtering device is installed in the middle of the upper end of the bottom plate, the collecting device is installed on the outer side of the filtering device, and the collecting device is of an annular structure. In the prior art, when the existing equipment treats paper pulp wastewater, the residual paper pulp fibers in the wastewater cannot be effectively collected, so that the paper pulp recovery effect is poor, the waste is serious, and different degrees of pollutions can be caused to the water body; and when an air flotation method is adopted to treat paper pulp wastewater, the contact effect of the wastewater and injected air is poor, the impurities in the wastewater cannot be completely collected, more impurities are left in the treated wastewater, and the stability of the floating foam formed by contacting the airis poor, so that secondary pollution to the wastewater and other problems are easily caused. With the method of the invention, the problems in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of papermaking wastewater treatment, in particular to a processing method for pulp wastewater treatment. Background technique [0002] With the development of society, people's demand for paper is increasing day by day, and the world's paper industry has developed rapidly. However, with the increase of paper production and consumption, the discharge of paper industry wastewater also increases. In the papermaking process, a large amount of organic matter other than cellulose and some hemicellulose will enter the wastewater, and even after full waste liquid recycling, there will still be more or less some cellulose and hemicellulose loss into the waste water. [0003] At present, when the existing pulp wastewater is processed, the following defects usually exist: 1. When the pulp wastewater is processed, the residual pulp fibers in the wastewater cannot be effectively collected, resulting in poor pulp recover...

AI Technical Summary

Problems solved by technology

[0005] The present invention can solve the problem that the existing equipment cannot effectively collect the residual pulp fibers in the wastewater when the pulp wastewater is processed, resulting in poor pulp recovery effect, serious waste, and different degrees of pollution to the water body. When the air flotation method is used to treat pulp wastewater, the contact effect between the wastewater and the injected air is poor, and the impurities in the wastewater cannot be completely collected, resulting in more impurities remaining in the treated wastewater, and at the same time, floating foam is formed in contact with the air. Poor stability, easy to cause secondary pollution to wastewater and other problems

Images