Controlled-Release Carbon-Source Study of Biological Denitrification in Groundwater
The controlled-release carbon-sources (CRCS) for in-situ remediation of nitrate-contaminated groundwater were prepared with starch and PVA by blending/coating technique. The CODCr releasing test indicated that all the CRCS had different CODCr releasing ability with different component. The CRCS was satisfied with the biological denitrification process. The nitrate biological degradation test illustrated that the different starch content affected unremarkable to the Denitrifying bacteria after 6 days Acclimation period. In the system, the concentration of NO3- was reduced from 40mg/L to 10mg/L after 6days biological denitrification. Meanwhile, it was found that the carbon source had slow-release ability and continuous release organic substance as it was consumed during the biological denitrification process.
carbon source nitrate groundwater biological denitrification
ZHOU Guizhong ZHANG Xu LI Guangh
School of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China
国际会议
2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)
北京
英文
2007-11-13（万方平台首次上网日期，不代表论文的发表时间）