AAONAO continuous flow two-sludge denitrification advanced nitrogen removal and dephosphorization device and technology based on online control

• Main Authors: HE SHUZHUANG, DUAN CHANGQUN, LU YIFENG, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 18.05.2016
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to an AAONAO continuous flow two-sludge denitrification advanced nitrogen removal and dephosphorization device and technology based on online control. The device mainly comprises an anaerobic pond, a first-stage anoxic pond, a first-stage quick aeration tank, a first-stage sedimentation tank, an aeration biological filter, a second-stage anoxic pond, a second-stage quick aeration tank, a second sedimentation tank, a redox potential measuring control system, a dissolved oxygen measuring control system and an aeration subsystem. The device is based on a double-sludge denitrification nitrogen removal and dephosphorization principle and the oneline control technology, anaerobic phosphorus release, secondary sedimentation of sludge, secondary denitrification phosphorus uptake, secondary aerobiotic phosphorus uptake, secondary denitrification nitrogen removal, control of low-oxygen low-ammonia nitrogen nitrification liquor, backflow denitrification of sludge mixed liquid and other nitrogen rem