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How do we choose the appropriate domestic sewage treatment equipment

Release time:

2023-04-25 15:23

Since the core of domestic sewage treatment is the biochemical part, we refer to the sewage treatment process specifically to this part, such as contact oxidation method, SBR method, A/O method, etc. Our company is currently using biochemical methods (including anaerobic and aerobic) to treat domestic sewage, which is the most economical and applicable sewage treatment process. Choosing different sewage treatment processes based on the quantity, quality, and on-site conditions of domestic sewage during treatment has a decisive impact on investment and operating costs. For many years, the activated sludge process has been widely used for the secondary biological treatment of urban domestic sewage. It is currently the most widely used secondary biological treatment process in various countries around the world, with advantages such as high treatment capacity and good effluent quality.
Currently, there are common problems in the research and application of urban domestic sewage treatment:
(1) The traditional activated sludge method often incurs high infrastructure and operating costs, high energy consumption, complex management, and is prone to sludge bulking; The process equipment cannot meet the requirements of high efficiency and low consumption.
(2) With the continuous strictness of sewage discharge standards, there are high requirements for the discharge of nutrients such as nitrogen and phosphorus in sewage. Traditional sewage treatment processes with nitrogen and phosphorus removal functions mainly rely on activated sludge method, often requiring multiple anaerobic and aerobic reaction tanks to be connected in series to form multi-level reaction tanks. By increasing internal circulation, the purpose of nitrogen and phosphorus removal is achieved, which inevitably increases the cost of infrastructure investment and energy consumption, And it makes operational management more complex.
(3) At present, the treatment of urban sewage is mainly centralized, and the investment in a large sewage collection system far exceeds the investment of the sewage treatment plant itself. Therefore, building a large sewage treatment plant to centrally treat domestic sewage may not be the only feasible solution from the perspective of sewage regeneration and reuse. Many places have started to use domestic sewage treatment equipment to effectively treat sewage.

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