Project Introduction:

 For the first time, this project proposes and uses a five-tank integrated activated sludge process to develop and research sewage phosphorus and denitrification technology and equipment. It adopts a multi-tank series connection form, which not only has the characteristics of a cascade reactor, but also is easy to meet the phosphorus and denitrification process. The anaerobic and aerobic alternating environmental requirements, continuous flow and constant water level operation. By alternating the positions of water inlet and water outlet, multi-point water inlet and two-point water outlet are realized, water flow turns to flow in cycle alternation, sludge backflow and mixed liquid backflow are avoided, and equipment investment and power consumption are low.

Project advantages:

 The process has the characteristics of high phosphorus and nitrogen removal efficiency, stable operation when the influent water is low, no need for the backflow of mixed liquor and sludge, and small head loss. Compared with the conventional A2/O process and its improved process, it has obvious energy-saving effect.      

Project maturity:

Small batch production stage

Income analysis:

 This is a patented invention technology. Currently, there is no engineering application at home and abroad. However, a pilot plant has been successfully running for 2 years. It is necessary to summarize and improve this technology and formulate standards. The multi-tank integrated activated sludge process is particularly suitable for small and medium-sized domestic sewage and urban sewage treatment. While saving investment and operating costs, it facilitates professional centralized management. The promotion prospects are good.