Sludge film composite autotrophic nitrogen removal technology and reactor based on light induction

• Main Authors: LIANG XIAOJUN, HUANG DANDAN, RONG HONGWEI, CHU ZHAORUI
• Format: Patent
• Language: Chinese; English
• Published: 28.01.2022
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a sludge film compound type autotrophic nitrogen removal process based on light induction, and belongs to the technical field of biological sewage treatment. The process is characterized in that ecological niche differentiation of functional bacteria is promoted through a method of adding a biofilm carrier and controlling process parameters, anaerobic ammonium oxidation bacteria mainly survive in a biofilm, and nitrifying bacteria including aerobic ammonia oxidizing bacteria, nitrite oxidizing bacteria and the like mainly survive in activated sludge, so that efficient interception of anaerobic ammonia oxidizing bacteria is realized; further, growth of nitrite oxidizing bacteria in the activated sludge is selectively inhibited through an ultraviolet light induced bacterial oxidative stress method, so that elutriation of the nitrite oxidizing bacteria is achieved; and finally, the nitrosation-anaerobic ammonia oxidation process is completed through cooperation of the aerobic ammonia oxida