Improved high-voltage alternating current pulse sludge decomposing device and application thereof

Abstract

The invention belongs to a sludge treatment method and equipment and particularly relates to an improved high-voltage alternating current pulse sludge decomposing device and application thereof. The device comprises a sludge flowing pipe made of an insulated material, electrodes and high-voltage alternating current pulse power supplies which are electrically connected with the electrode; two endsof the sludge flowing pipe are connected with a metal pipeline through connecting flanges; the electrodes comprise an inner electrode which is fixed in the sludge flowing pipe along the axis and coatsan insulating sheath on the outer surface and an outer electrode coating the outer surface of the sludge flowing pipe; the metal pipeline is earthed and is respectively provided with a sludge inlet and a sludge outlet; the high-voltage alternating current pulse power supplies comprise positive and negative pulse power supplies with identical amplitude, identical period and opposite polarities; the positive and negative pulse power supplies are correspondingly and electrically connected with the inner electrode and the outer electrode respectively. According to the improved high-voltage alternating current pulse sludge decomposing device disclosed by the invention, the problems that an area of treating sludge is small, a cell wall breaking effect is difficulty further improved and the likein the prior art are solved; the improved high-voltage alternating current pulse sludge decomposing device has the advantages of great treatment area, good sludge treatment effect and the like.

Description

technical field [0001] The invention belongs to a sludge treatment method and equipment, in particular to an improved high-voltage AC pulse sludge decomposition device and its application. Background technique [0002] In recent years, with the continuous improvement of China's urbanization level and the rapid development of sewage treatment facilities, the excess sludge generated after sewage treatment has also increased. Sludge treatment has become one of the important environmental protection issues. The current sludge has a high moisture content, is difficult to treat, and occupies a large area. How to treat and utilize sludge has become a hot topic in the research of the environmental protection industry. [0003] Relevant studies have shown that excess sludge contains many organic substances, such as nucleic acids, proteins, polysaccharides, etc., but most of them exist in microbial cells in sludge, and it is difficult to use them directly. If the microbial cells can ...

AI Technical Summary

Problems solved by technology

Relevant data and the applicant's tests have confirmed that the treatment of sludge with a moisture content of 93% by acid hydrolysis and heating can increase CODcr to above 1500mg / L, and the treatment of sludge with a moisture content of 98%-99% by alkaline hydrolysis can reduce CODcr content increased to over 2500mg / L, alkaline hydrolysis heating coupling method to treat sludge with a water content of 96%-99% can even increase CODcr to over 20000mg / L, which shows that the use of high-voltage AC pulse sludge decomposition equipment to treat sludge There is still a lot of room for improvement

Images