Sewage treatment apparatus and sewage treatment technology

Abstract

The invention relates to a sewage treatment apparatus and a sewage treatment technology, and belongs to the technical field of sewage treatment. The apparatus is characterized in that the apparatus comprises a sludge dispersing mechanism (1), a solid-liquid separation mechanism (2), a wall breaking device (3), a dewatering mechanism (4) and a desalinating device (5), the material outlet of the sludge dispersing mechanism (1) communicates with the material inlet of the solid-liquid separation mechanism (2), the sludge outlet of the solid-liquid separation mechanism (2) is sequentially connected with the wall breaking device (3), the dewatering mechanism (4) and the desalinating device (5), the water outlet of the solid-liquid separation mechanism (2) is connected with the desalinating device (5), and dewatered sludge is discharged from the sludge outlet of the dewatering device (4). The sludge treatment apparatus has the advantages of guaranteeing of thorough wall breaking of cell walls, prevention of the dead angle problem of wall breaking, caused by cell substance aggregation, and reduction of the sludge volume load in the subsequent treatment link; and the treatment technology of the sludge treatment apparatus has the advantages of fundamental reduction of the water content of the treated sludge, and reduction of the subsequent treatment cost.

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