Technology for treating domestic sewage by realizing partial short-cut nitrification, sludge fermentation coupling denitrification and anaerobic ammonia oxidation in sequencing batch reactor

• Main Authors: WANG ZENGHUA, PENG YONGZHEN, QIAO XIN, WANG BO, GONG XIAOFEI
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2018
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a technology for treating domestic sewage by realizing partial short-cut nitrification, sludge fermentation coupling denitrification and anaerobic ammonia oxidation in a sequencing batch reactor, and belongs to the field of the sewage sludge biological treatment. The technology comprises an inlet water tank, a partial short-cut nitrification reactor (PN-SBR), an intermediate water tank, an anaerobic ammonia oxidation coupling sludge fermentation and denitrification reactor (ASFD-SBR), and an outlet water tank. The partial short-cut nitrification is performed in the partial short-cut nitrification reactor (PN-SBR), and a part of ammonia nitrogen in raw water is converted to nitrite nitrogen. The influent ammonia nitrogen and the nitrite nitrogen are converted to a nitrogen gas and a little of nitrate nitrogen by anaerobic ammonium oxidation bacteria in the anaerobic ammonia oxidation coupling sludge fermentation and denitrification reactor (ASFD-SBR), and the generated nitrate nitrogen