Simultaneous denitrifying phosphorus accumulation in a sequencing batch reactor

被引：5

作者：

Yuan L. ^{[1
]}

Han W. ^{[1
]}

Wang L. ^{[1
]}

Yang Y. ^{[1
]}

Wang Z. ^{[1
]}

机构：

[1] School of Environmental and Municipal Engineering, Xi'An University of Architecture and Technology

来源：

Frontiers of Environmental Science & Engineering in China | 2007年 / 1卷 / 1期

基金：

中国国家自然科学基金;

关键词：

Denitrifying phosphorus accumulation (DNPA); Enhanced biological nutrient removal (EBNR); Induction; Phosphorus accumulating organism (PAO); Sequencing batch reactor (SBR);

D O I：

10.1007/s11783-007-0004-6

中图分类号：

学科分类号：

摘要：

In order to achieve simultaneous nitrogen and phosphorus removal in the biological treatment process, denitrifying phosphorus accumulation (DNPA) and its affecting factors were studied in a sequencing batch reactor (SBR) with synthetic wastewater. The results showed that when acetate was used as the sole carbon resource in the influent, the sludge acclimatized under anaerobic/aerobic operation had good phosphorus removal ability. Denitrifying phosphorus accumulation was observed soon when fed with nitrate instead of aeration following the anaerobic stage, which is a vital premise to DNPA. If DNPA sludge is fed with nitrate prior to the anaerobic stage, the DNPA would weaken or even disappear. At the high concentration of nitrate fed in the anoxic stage, the longer anoxic time needed, the better the DNPA was. Induced DNPA did not disappear even though an aerobic stage followed the anoxic stage, but the shorter the aerobic stage lasted, the higher the proportions of phosphorus removal via DNPA to total removal. © Higher Education Press 2007.

引用

页码：23 / 27

页数：4

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