Effect of nitrate recycling ratio on simultaneous biological nutrient removal in a novel anaerobic/anoxic/oxic (A2/O)-biological aerated filter (BAF) system

被引：163

作者：

Chen, Yongzhi ^{[1
]}

Peng, Chengyao ^{[1
]}

Wang, Jianhua ^{[1
]}

Ye, Liu ^{[2
]}

Zhang, Liangchang ^{[1
]}

Peng, Yongzhen ^{[1
]}

机构：

[1] Beijing Univ Technol, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100124, Peoples R China

[2] Univ Queensland, AWMC, Brisbane, Qld 4072, Australia

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 10期

关键词：

A(2)/O-BAF system; Nitrate recycling ratio; Simultaneous biological nitrogen and phosphorus removal; Denitrifying phosphorus removal; Low C/N ratio domestic wastewater; DENITRIFYING PHOSPHORUS REMOVAL; WASTE-WATER; NITROGEN REMOVAL; SLUDGE; FLOW;

D O I：

10.1016/j.biortech.2011.02.114

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A novel system integrating anaerobic/anoxic/oxic (A(2)/O) and biological aerated filter (BAF), which could solve the sludge retention time (SRT) conflicting problem between nitrifiers and polyphosphate accumulating organisms (PAOs) by shortening SRT for PAOs in A(2)/O and lengthening SRT for nitrifiers in BAF, was investigated in this study. Various nitrate recycling ratios (100%, 200%, 300% and 400%) were applied to a lab-scaled A(2)/O-BAF system to detect the simultaneous biological nitrogen and phosphorus removal performance while treating real domestic wastewater with low carbon to nitrogen (C/N) ratio. The concentrations of chemical oxygen demand (COD), NH4+-N and total phosphorus (TP) in the effluent were less than 50.0, 0.5 and 0.5 mg/L, respectively, throughout the experiments. The removal efficiencies of total nitrogen (TN) were 64.9%, 77.0%, 82.0% and 87.0%, under respective nitrate recycling ratios (increasing from 100% to 400%). By contrast, nitrate recycling ratios had neglectable effect on the removal efficiencies of COD and NH4+-N. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5722 / 5727

页数：6

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