A sewage treatment device

Abstract

The invention provides a sewage treatment device. The sewage treatment device comprises a multistage heat exchanger, a first adsorption pond and a second adsorption pond, wherein one end of the multistage heat exchanger is communicated with a high-temperature sewage inlet, low-temperature sewage is discharged from the other end of the multistage heat exchanger, and a low-temperature heat exchange liquid inlet and a high-temperature heat exchange liquid outlet are formed in the multistage heat exchanger; and the first adsorption pond and the second adsorption pond are sequentially communicated. According to the sewage treatment device, heat of the sewage is recycled by virtue of a heat exchange liquid, the heat exchange liquid is treated, and a mixture obtained during the treatment is put into the sewage treatment device again for sewage adsorption, so that the heat energy of the sewage is adequately utilized, the secondary adsorption of the sewage is realized, and the sewage treatment device is energy-saving and environment-friendly; and the full-automatic sewage treatment control is realized, and the automation degree is high.

Description

technical field [0001] The invention relates to the field of environmental protection machinery, in particular to a sewage treatment device. Background technique [0002] With the acceleration of modern urbanization and industrialization, the pollution of rivers and water sources on which human beings rely is becoming more and more serious, and the water body appears black and smelly seasonally or all the year round. According to reports, the river sections of my country's flowing cities are generally polluted to varying degrees, such as the Suzhou Creek in Shanghai, the Outer City River in Suzhou, the Qinhuai River in Nanjing, the Pearl River in Guangdong, the Yongding River in Beijing, etc., as well as countless drainage ditches and ponds. , seaside or riverside wetlands, park wetlands, etc. are all seriously polluted, and some places even threaten human drinking water sources, reservoirs, etc. Water pollution seriously threatens the quality of life and health of residents...

AI Technical Summary

Problems solved by technology

[0004] The physical method in sewage treatment is easy to operate, but the treatment effect is average, and the toxic and harmful substances in the sewage cannot be deeply removed; the treatment period of the biological treatment method is very long, and some methods may even have ecological risks or cause secondary pollution to the environment; The chemical treatment method can deeply remove toxic and harmful substances in sewage, and the treatment cycle is much shorter than the biological treatment method, so it is currently a widely used sewage treatment method

However, the treatment agent in the chemical treatment method plays an important role in the treatment effect of sewage, and the preparation cost of the treatment agent is relatively high, and the degree of automation in the sewage treatment process is generally low

[0005] To sum up, the current sewage treatment has its own advantages and disadvantages, and there is no device with high difficulty in automatic control and good treatment effect.

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