Sludge biochemical treatment system and method

Abstract

The invention discloses a sludge biochemical treatment system. The sludge biochemical treatment system comprises a sludge treatment device, a sludge concentrating tank, a homogenizing conditioning tank, a neutralizing tank, a primary settling tank, an anaerobic tank, a first aerobic tank, a secondary settling tank, a secondary aerobic tank, a final settling tank, an air floating tank, a pressure filter and a monitoring tank; the sludge concentration tank, the homogenizing conditioning tank, the neutralizing tank, the primary settling tank, the anaerobic tank, the first aerobic tank, the secondary settling tank, the secondary aerobic tank, the final settling tank, the air floating tank and the monitoring tank are connected in sequence; the pressure filter is connected with the first aerobic tank; and the sludge concentration tank is connected with the anaerobic tank, the secondary settling tank and the final settling tank. The sludge biochemical treatment system further comprises a collecting tank that is arranged between the sludge concentration tank and the homogenizing conditioning tank. With the adoption of the sludge biochemical treatment system and method, mass production is realized, the sludge quantity is effectively decreased, the water content of a filter cake is reduced, the amount of added flocculating agents is lowered down, the energy consumption in production process is reduced, and circular processing can be carried out at a plurality of times.

Description

technical field [0001] The invention relates to the field of environmental engineering sewage treatment, in particular to a biochemical sludge treatment system and a treatment method thereof. Background technique [0002] The most widely used and mature method in the treatment of industrial wastewater in my country is the biologically activated sludge method, which has the advantages of low investment and operating costs and stable treatment effects, but it has one of the biggest drawbacks, that is, it will produce sludge during operation. A large amount of residual sludge. Excess sludge usually contains a considerable amount of toxic and harmful substances and unstabilized organic matter, which needs timely and proper treatment and disposal, otherwise it will cause direct or potential pollution to the environment. At present, my country's urban sludge treatment volume is about 30 billion m 3 / a, producing about 200 million m3 of biochemical sludge with a water content of 9...

AI Technical Summary

Problems solved by technology

Incineration: good reduction effect, but high investment and operating costs, complex operation, and dangerous fly ash, difficult to deal with flue gas

Digestion: The treatment cost is lower, but only part of the organic matter can be removed, and the sludge reduction is not significant

Sludge and ozone cannot fully react, sludge treatment is not thorough enough, and the utilization rate of ozone is low, resulting in a high proportion of ozone injection, high energy consumption, and high operating costs, making it difficult to apply on a large scale

[0006] At present, there is a lack of a biochemical sludge treatment system and treatment method that can effectively reduce the amount of sludge in sewage

Images