期刊
WATER ENVIRONMENT RESEARCH
卷 79, 期 7, 页码 765-774出版社
WILEY
DOI: 10.2175/106143006X123139
关键词
activated sludge; biofilm; floating carriers; hybrid reactor; wastewater treatment
The reduction of organic and nitrogen pollution of wastewater was investigated in two hybrid reactors and compared with the reduction obtained by using a conventional activated sludge reactor (ASR) run as a control. Both HR-1 and HR-2 were activated sludge systems where a low-density carrier, P1 (polyethylene) for HR-1 and P2 (recycled plastics) for HR-2, was added. Firstly, the three reactors were operated at 10 days Suspended Solid Retention Time (SRTSS), leading to a complete nitrification. Secondly, the SRTSS for each reactor was lowered to 3 days. Nitrification was lost for the ASR but remained complete for HR's. Respirometric techniques were used to measure fixed or suspended biomass activities for heterotrophic and autotrophic biomass. More than 90 % of the autotrophic activity was found on the supports whatever the SRTSS used. The results may underline the role of the carrier geometry or surface characteristics on the autotrophic/heterotrophic microorganism distribution.
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