Study on Stabilization of Shortcut Nitrification-Denitrification in Domestic Water Treatment Applying Real-time Control Strategy
A sequencing batch reactor (SBR) was used to treat real domestic wastewater focusing on the achievement, maintenance and the feasibility of nitrite accumulation under real-time control. Keeping temperature, MLSS and dissolved oxygen (DO) in reactor at 28±1 , 2400 ℃ mg/L and higher than 2.0 mg/L respectively, shortcut nitrification-denitrification was successfully achieved after about two months. But the sudden raise of ammonia loading rate (ALR) caused deterioration of nitrite accumulation and occurrence of filamentous sludge bulking. These undesirable situations could be solved by pre-anaerobic operation mode. If applying long-term real-time control strategy to supervise the nitrification course, the sludge population optimization and high nitrite accumulation rate at different DO levels could be achieved. The strategy taking pH and aeration quantity as control parameters for nitrification in SBR was put forward under invariable DO conditions in this paper.
shortcut nitrification-denitrification(SND) sequence batch reactor(SBR) real-time control
MA Tao ZHAO Chaocheng PENG Yongzhen LIU Xiuhong ZHOU Li
College of Chemistry and Chemical Engineering,China University of Petroleum,Dongying 257061,Shandong College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100022,Chin School of Environmental and Municipal Engineering,Qingdao Technological University,Qingdao 266033,Sh
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
1623-1628
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）