Simultaneous denitrifying phosphorus accumulation in a sequencing batch reactor |
| |
Authors: | Yuan Linjiang Han Wei Wang Lei Yang Yongzhe and Wang Zhiying |
| |
Institution: | (1) School of Environmental and Municipal Engineering, Xi’an University of Architecture & Technology, Xi’an, 710055, China |
| |
Abstract: | 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.
Translated from Environmental Science, 2004, 25(6): 92–96 译自: 环境科学] |
| |
Keywords: | denitrifying phosphorus accumulation (DNPA) sequencing batch reactor (SBR) phosphorus accumulating organism (PAO) enhanced biological nutrient removal (EBNR) induction |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|