Anoxic phosphorus removal in a pilot scale anaerobic-anoxic oxidation ditch process

作     者：Hongxun HOU Shuying WANG Yongzhen PENG Zhiguo YUAN Fangfang YIN Wang GAN 

作者机构：College of Environmental and Energy EngineeringBeijing University of TechnologyBeijing 100022China Anhui Guozhen Environmental Protection Science and Technology Co.Ltd.Hefei 230088China Advanced Wastewater Management Centre(AWMC)The University of QueenslandSt LuciaBrisbaneQld 4072Australia 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2009年第3卷第1期

页      面：106-111页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：This work was supported by the National Natural Science Foundation of China—the Abroad Young Scholar Foundation(Grant No.50628808) the National Key Technologies Research and Development Program of China during the 11th Five-year Plan Period(Grant No.2006BAC19B02) 

主　　题：wastewater treatment anaerobic-anoxic(A^(2)/O) oxidation ditch(OD) biological phosphorus removal denitrifying phosphorus removal 

摘      要：The anaerobic-anoxic oxidation ditch(A^(2)/O OD)process is popularly used to eliminate nutrients from domestic *** order to identify the existence of denitrifying phosphorus removing bacteria(DPB),evaluate the contribution of DPB to biological nutrient removal,and enhance the denitrifying phosphorus removal in the A^(2)/O OD process,a pilot-scale A^(2)/O OD plant(375 L)was *** the same time batch tests using sequence batch reactors(12 L and 4 L)were operated to reveal the significance of anoxic phosphorus *** results indicated that:The average removal efficiency of COD,NH^(+)_(4),PO^(3–)_(4),and TN were 88.2%,92.6%,87.8%,and 73.1%,respectively,when the steady state of the pilotscale A^(2)/O OD plant was reached during 31–73 d,demonstrating a good denitrifying phosphorus removal *** uptake took place in the anoxic zone by poly-phosphorus accumulating organisms NO^(-)_(2) could be used as electron receptors in denitrifying phosphorus removal,and the phosphorus uptake rate with NO^(-)_(2) as the electron receptor was higher than that with NO^(–)_(3) when the initial concentration of either NO^(-)_(2) or NO^(–)_(3) was 40 mg/L.