Device and method for sewage treatment of highway service area

Abstract

The invention relates to a device and method for sewage treatment of a highway service area. A grille tank 1, a regulating tank 2, a hydrolysis tank 3, a primary contact oxidation pond 4, a secondary contact oxidation pond 5, a sedimentation tank 6, a disinfection tank 7 and a sludge tank are arranged to be in series connection in sequence. The disinfection tank 7 is connected with a pipe mixer 14 through a pipe, the pipe mixer 14 is further connected with a tank type filter 11, and the tank type filter 11 is sequentially connected with a secondary regulating tank 12 and a continuous microfiltration device 13. A biochemical and physicochemical processing process is adopted, COD, ammonia nitrogen and oil pollutants are efficiently removed, and stable emission reaching the standard is achieved. The device has good load-resistant load capability, so as to adapt to water volume and water quality changes. A hydrolysis and two-stage contact oxidation process is adopted, the removal rate of organic substances is improved, and the remaining sludge amount is very small. Concentrated control is adopted, and the device runs automatically and is easy to manage. The device is advanced and reliable in process, high in automation degree, simple to manage and maintain and low in energy consumption and failure. Reclaimed water can be reused, energy saving, consumption reduction and emission reduction are achieved, and the idea of the green high-speed service area is achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment device and method for expressway service areas. Background technique [0002] The sewage in the expressway service area mainly comes from the domestic bathing water of the employees in the service area, the oily sewage from the auto repair workshop, and the sewage from public toilets. The characteristics of sewage in expressway service areas are: the concentration of pollutants is slightly higher than that of domestic sewage in residential areas, the water quality is unstable, and the content of COD, ammonia nitrogen, phosphorus, chroma, and oil pollution is high at the peak of pollution. The amount of water has a large fluctuation, and the amount of water may be different every hour, every day, day and night. [0003] At present, the expressway service area is basically treated by traditional sewage treatment technology, which generally a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a sewage treatment device and method in expressway service areas, which can solve the problems of poor impact load resistance and complicated management and maintenance in the prior art

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