Removal of Cr (Ⅵ) in Anoxic and Sulfate-Reducing SBRs

摘要：

Microbial uptake of Cr(VI) at 3.2-10.4 mg/L dosing pattern in weekly sequential periods was investigated under anoxic and sulfate-reducing conditions in sequential batch reactors (SBR). Cr (VI)s fate and acute effect was also determined on nitrate and organic matter (COD) reduction of unacclimated sludge cultures with methanol as substrate. Chromium (VI) was removed at an efficient level throughout the study with adaptation signs. Chromiums inhibitory effect was not observed on nitrate reduction which reached high levels following a three week adaptation period where organic matter reduction correlated to other mechanisms than nitrate reduction was altered. A higher yield of 0.88 and a chromium removal in relation to biomass was obtained in anoxic conditions. Organic matter usage was inhibited in both SBR where sulfate reduction was altered at the maximum dosing and accumulated in the reactor.

作者: ERDIRENCELEBI Dilek YILMAZTURK Derya YEL Esra

作者单位: Environmental Engineering Department, Selcuk University, Konya 42075, Turkey

会议类型: 国际会议

会议名称: 2011 International Symposium on Environmental Science and Technology(2011 环境科学与技术国际会议 2011 ISEST)

会议地点: 广东东莞

会议语种:英文

页码: 577-582

在线出版日期: 2011-06-01（万方平台首次上网日期，不代表论文的发表时间）