Sewage treatment apparatus and sewage treatment technology

Abstract

A sludge treatment device and a treatment process belong to the technical field of sewage treatment. It is characterized in that it includes a sludge dispersion mechanism (1), a solid-liquid separation mechanism (2), a wall breaking device (3), a water removal mechanism (4) and a desalination device (5), and the outlet of the sludge dispersion mechanism (1) The feed port is connected to the feed port of the solid-liquid separation mechanism (2), and the sludge outlet of the solid-liquid separation mechanism (2) is connected to the wall breaking device (3), the water removal mechanism (4) and the desalination device (5) in sequence. The water outlet of the liquid separation mechanism (2) is connected to the desalination device (5), and the dewatered sludge is discharged from the sludge outlet of the water removal mechanism (4). The sludge treatment device can ensure the complete destruction of the cell wall, prevent the problem of dead ends in the wall due to the aggregation of cell materials, and reduce the sludge volume load in the subsequent treatment process; the treatment process of the sludge treatment device can start from the root cause The moisture content of the sludge after treatment is reduced, and the cost of subsequent treatment is reduced.

Description

technical field [0001] A sludge treatment device and a treatment process belong to the technical field of sewage treatment. Background technique [0002] In the process of sewage treatment, the suspended particles in the sewage are generally destabilized by adding various coagulants or coagulants, and the colloidal particles coagulate with each other to form flocs. With the further increase of the floc volume, in Under the action of gravity, it separates from the water phase and precipitates to form a large amount of sludge. Among them, polyacrylamide has been widely used due to its easy-to-obtain raw materials, excellent adsorption bridging effect, and electrical neutralization effect, and good sludge particle flocculation effect. [0003] The most important step in sludge treatment is to separate the water in the sludge and reduce the volume of the sludge, thereby reducing the sludge volume load in the subsequent treatment process. However, since most of the organic matt...

AI Technical Summary

Problems solved by technology

However, since most of the organic matter in the sludge is the cell matter of microorganisms, it is wrapped by the cell wall and the cell wall. In addition, while polyacrylamide and the hydrophilic substances in the sludge form a composite colloidal network structure, the long chain of polyacrylamide also A large amount of water is also wrapped up, resulting in an increase in the amount of water and bound water inside the sludge floc particles, which has a large resistance to later filtration and dehydration

Images