Micro-potential double-fluidized-bed efficient phosphorus and nitrogen removal sewage treatment system

• Main Authors: LI MUJIN, LIU BOTING, LAN YIFA, LIU DUNQIANG, HUANG FUPING, HUANG ZHINING
• Format: Patent
• Language: Chinese; English
• Published: 22.01.2021
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a micro-potential double-fluidized-bed efficient phosphorus and nitrogen removal sewage treatment system, which comprises a fine grid sewage removal machine, the output end ofthe fine grid sewage removal machine is connected with the input end of a hydrolysis acidification pool through a connecting water pipe, the output end of a booster pump is connected with the input end of a fluidized bed through a connecting water pipe, and the output end of the fluidized bed is connected with the constructed wetland through the connecting water pipe. According to the invention, the dissolved oxygen content of each layer in the fluidized bed is different through multi-layer grading, and the layers are respectively in facultative and aerobic states, so that the conditions required by short-cut nitrification coupled anaerobic ammonia oxidation reaction are met, the sewage can be subjected to short-cut nitrification and anaerobic ammonia oxidation reaction in the fluidized bed, and further deep denit