期刊
BIORESOURCE TECHNOLOGY
卷 260, 期 -, 页码 1-8出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.03.055
关键词
Anammox granules; Chromium; Pre-exposure; Granule characteristics
资金
- Natural Science Foundation of China - China [51578204]
In this study, the feasibility of application of anaerobic ammonium oxidation (anammox) to teat wastewater containing chromium was assessed. Anammox granule activity decreased with increasing Cr(VI) concentration and pre-exposure time in batch tests, and the 50% inhibition concentration of Cr(VI) on anammox biomass was 296.5 mg L-1. Approximately 93.9% chromium was absorbed by loosely bound-extracellular polymeric substances and tightly bound-extracellular polymeric substances when less than 60 mg L-1 Cr(VI) was added. During long-term operation in up-flow anaerobic sludge blanket reactor, significant inhibitory effects anammox performance were observed for Cr(VI) concentrations up to 2 mg L-1. The nitrogen removal rate (NRR) rapidly decreased to 1.49 +/- 0.89 kg Nm(-3) d(-1), whereas the NRR was 11.37 +/- 1.30 kg Nm(-3) d(-1) in a control reactor. Compared with initial levels, specific anammox granule activity was 22%. The tolerance of the anammox process to Cr(VI) can be enhanced after a long-term adaptive phase.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据