High-salt sewage treatment system, and tank volume adjustment method and aeration adjustment method thereof

Abstract

The invention provides a high-salt sewage treatment system, and a tank volume adjustment method and aeration adjustment method thereof. The high-salt sewage treatment system comprises the following components: a sewage treatment part, wherein the sewage treatment part comprises an anaerobic tank, an anoxic tank, an aerobic tank and a biological filter tank, and the anaerobic tank, the anoxic tank,the aerobic tank and the biological filter are sequentially arranged in a communication mode; a nitrification liquid backflow channel, wherein the nitrification liquid backflow channel is provided with a first end and a second end, the first end communicates with the anoxic tank, the second end communicates with the aerobic tank, and the nitrification liquid backflow channel further comprises a driving pump for providing driving force; and a sludge backflow channel, wherein the sludge backflow channel is provided with a first end and a second end, the first end communicates with the biological filter tank, the second end communicates with the anaerobic tank, and the sludge backflow channel is further provided with a driving pump for providing driving force.

Description

Technical field [0001] The invention relates to the field of environmental protection, in particular to a high-salt sewage treatment system and a method for adjusting its pool capacity and aeration. Background technique [0002] With the development of society, environmental protection has become an important issue related to the economy, society, and the future. Sewage discharge causes water system pollution, and some harmful impurities in sewage, once appearing in natural waters, may cause great damage to natural ecology. Impact. [0003] Therefore, there are many measures for sewage treatment. One type of sewage is more difficult to treat, that is, high-salt sewage. This type of high-salt sewage has been increasing in recent years. There are many reasons for the increase. The main reason is that the discharge of industrial chemicals does not meet the standards, which leads to the salinity in the sewage. rise. In addition, this kind of high-salt sewage is very toxic and inhibi...

AI Technical Summary

Problems solved by technology

[0005] First, the salinity of general sewage treatment has a small adaptability range, and ordinary biochemical sludge is difficult to treat sewage with a high salinity of 2% and above

[0006] Second, the change of salinity of high-salt sewage has a greater impact. When the salinity changes for a short time, such as changing from 20g / L to 5g / L, it is likely to cause irreversible damage to the system

[0007] Third, the degradation rate of sewage slows down in a high-salt environment, which reduces the efficiency of sludge degradation of organic matter

[0008] Fourth, the loss of sludge is serious. When the density of sewage increases, the sedimentation performance of sludge is weakened, so that the sludge is also lost in the process of effluent, resulting in a decrease in the overall sewage treatment efficiency

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