Stable nitrification under sulfide supply in a sequencing batch reactor with a long fill period
Stable nitrification under sulfide supply in a sequencing batch reactor with a long fill period
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在长填充周期的序批式反应器中,在供应硫化物的情况下实现稳定硝化
DOI:
10.1016/j.jwpe.2018.05.012
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发表时间:
2018
影响因子:
7
通讯作者:
Tatsuki Toda
中科院分区:
文献类型:
--
作者:
Mutsumi Sekine;Shinichi Akizuki;Masatoshi Kishi;Tatsuki Toda
Ammonia-containing wastewater often also contains sulfide, which severely inhibits biological nitrification. In this study, the applicability of a sequencing batch reactor (SBR) with a long fill period to achieve stable nitrification of sulfide-containing anaerobic digestion effluent was evaluated. During the start-up period, in which no sulfide was supplied to the reactor (Phase I, experimental days 0–18), ammonium was oxidized to nitrate stably after day 6. During the period in which sulfide was supplied at 32 mg-S L−1d−1(Phase II, experimental days 18–30), the nitrification efficiency temporarily decreased to 79%, but recovered rapidly to 100% within two days. The sulfide tolerance of the sludge in the SBR was evaluated by batch bioassays at the end of the start-up period. The results showed that the half-maximum inhibitory concentration (IC50) for the sludge was 0.73 mg-S L−1, which was a typical value. Therefore, pre-existing sulfide tolerance of the sludge was not the main factor enabling stable nitrification during the sulfide supply period. Throughout the experimental period, the reactor was operated using a long sludge retention time of 139 days. The effective sludge retention in the SBR with a long fill period probably promoted the acclimatization of the microbes to sulfide, allowing the nitrification performance to remain stable even under sulfide supply.
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影响因子:
4.4
作者:
JULIETTE, LY;HYMAN, MR;ARP, DJ
通讯作者:
ARP, DJ
影响因子:
3.6
作者:
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Jorge Gómez
DOI:
10.1111/j.1747-6593.1998.tb00192.x
发表时间:
1998
期刊:
影响因子:
--
作者:
E. Morgenroth;P. Wilderer
通讯作者:
P. Wilderer
DOI:
10.2175/106143097x125128
发表时间:
1997
期刊:
影响因子:
--
作者:
G. Nakhla;Azhari F. M. Ahmed;S. Farooq
通讯作者:
S. Farooq
影响因子:
11.4
作者:
R. Beristain;D. Pérez;G. González;Jorge Gómez
通讯作者:
Jorge Gómez