期刊
WATER SCIENCE AND TECHNOLOGY
卷 78, 期 3, 页码 644-654出版社
IWA PUBLISHING
DOI: 10.2166/wst.2018.334
关键词
dewaterability; heat balance; heavy metals; microalgae; semi-continuous study; waste activated sludge
资金
- Knowledge Foundation in Sweden (KKS), Malarenergi AB
- Eskilstuna Energi och Miljo AB
A mix of microalgae and bacteria was cultivated on pre-sedimented municipal wastewater in a continuous operated microalgae-activated sludge process. The excess material from the process was co-digested with primary sludge in mesophilic and thermophilic conditions in semi-continuous mode (5 L digesters). Two reference digesters (5 L digesters) fed with waste-activated sludge (WAS) and primary sludge were operated in parallel. The methane yield was slightly reduced (approximate to 10%) when the microalgal-bacterial substrate was used in place of the WAS in thermophilic conditions, but remained approximately similar in mesophilic conditions. The uptake of heavy metals was higher with the microalgal-bacterial substrate in comparison to the WAS, which resulted in higher levels of heavy metals in the digestates. The addition of microalgal-bacterial substrate enhanced the dewaterability in thermophilic conditions. Finally, excess heat can be recovered in both mesophilic and thermophilic conditions.
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