The impact of organic load on the micro-pressure swirl bioreactor and its control strategy
WANG Fan1,2, YAO Xing-rong1,2, LIU Song-lin1,2, JIANG Wei-qing1,2, AI Sheng-shu1,2, WANG Xi-chao3, BIAN De-jun1,2
1. Changchun Institute of Technology, School of Hydraulic & Environmental Engineering, Changchun 130012, China; 2. Key Laboratory of Urban Sewage Treatment of Jilin Province, Changchun 130012, China; 3. Hainan Provincial Water Group Co., Ltd, Haikou 571126, China
Abstract:Through a single-cycle instantaneous organic load rate (OLR) shock test, the influence of OLR shock on the micro-pressure swirl bioreactor (MPR) removal efficiency was explored. And adopt the method of increasing the aeration rate to deal with the shock, and determine the optimal aeration rate under different OLR shock conditions. The results showed that with the increase of OLR, the effluent COD was less than 50mg/L and the effluent TN was less than 10mg/L, but the removal efficiency of NH4+-N and TP decreased as the load increased. OLR increased to 0.26gCOD/(gMLSS·d), the effluent TP was higher than 0.5mg/L, and when it was increased to 0.46gCOD/(gMLSS·d), the effluent NH4+-N was higher than 5mg/L. When OLR is 0.26, 0.34, 0.46gCOD/(gMLSS·d), the corresponding optimal aeration volume is 1.95, 2.25, 2.45L/min, respectively. Under a single-cycle OLR shock, the influence could be effectively dealt with by adjusting the amount of aeration to ensure the removal of pollutants.
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WANG Fan, YAO Xing-rong, LIU Song-lin, JIANG Wei-qing, AI Sheng-shu, WANG Xi-chao, BIAN De-jun. The impact of organic load on the micro-pressure swirl bioreactor and its control strategy. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(8): 3667-3675.
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