Enhanced nutrient removal in a modified step feed process treating municipal wastewater with different inflow distribution ratios and nutrient ratios

被引：161

作者：

Ge, Shijian ^{[1
]}

Peng, Yongzhen ^{[1
,2
]}

Wang, Shuying ^{[1
]}

Guo, Jianhua ^{[2
]}

Ma, Bin ^{[2
]}

Zhang, Liang ^{[2
]}

Cao, Xu ^{[1
]}

机构：

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

[2] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 23期

关键词：

Step feed; Inflow distribution ratios; Nutrient ratios; Simultaneous nitrification and denitrification (SND); Denitrifying phosphorus removal; BIOLOGICAL NITROGEN REMOVAL; SIMULTANEOUS NITRIFICATION; PHOSPHORUS REMOVAL; COD/N RATIO; UCT-TYPE; DENITRIFICATION; NITRITE; PERFORMANCE; EFFICIENCY; AMMONIUM;

D O I：

10.1016/j.biortech.2010.06.151

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A pilot-scale modified step feed process was proposed to enhance organics and nutrient (N and P) removal performance from municipal wastewater. It combined University of Cape Town (UCT) and step feed process. Effects of inflow distribution ratios and nutrients ratios were investigated. The highest removal efficiencies of 89% for chemical oxygen demanding (COD), 88% for total nitrogen (TN) and 93% for phosphorus were obtained, respectively, at the inflow distribution ratio of 40:30:30%. The phosphorus removal exhibited an upward trend with the increasing of influent COD/P and TN/P, and the nitrogen removal had a positive correlation with influent COD/TN. In addition, aerobic simultaneous nitrification and denitrification and anoxic denitrifying phosphorus uptake made a distinct contribution to enhance nutrient removal. The proposed system was demonstrated to be an attractive enhanced biological nutrient removal process for wastewater treatment plants due to relatively high nutrient removal, robust sludge settleability and energy savings. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：9012 / 9019

页数：8

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