期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 351, 期 -, 页码 90-97出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2018.02.038
关键词
Landfill leachate; Electro-Oxidation; Electro-Coagulation; Electro-Reduction; DSA electrodes
资金
- State Key Laboratory of Urban Water Resource and Environment [2016DX05]
- China Postdoctoral Science Foundation [2017M611373]
- Heilongjiang Postdoctoral Science Foundation, China [LBH-Z16073]
- University of Cincinnati through a UNESCO co-Chair Professor position on Water Access and Sustainability
- Herman Schneider Professorship in the College of Engineering and Applied Sciences
This study presents an integrated Electro-Oxidation/Electro-Coagulation/Electro-Reduction (EO/EC/ER) process for tertiary landfill leachate treatment. The influence of variables including leachate characteristics and operation conditions on the performance of EO/EC/ER process was evaluated. The removal mechanisms were explored by comparing results of anode, cathode, and bipolar electrode substitution experiments. The performance of the process in a scaled-up reactor was investigated to assure the feasibility of the process. Results showed that simultaneous removal of carbonaceous and nitrogenous pollutants was achieved under optimal conditions. Ammonia removal was due to the free chlorine generation of EO while organic matter degradation was achieved by both EO and EC processes. Nitrate removal was attributed to both ER and EC processes, with the higher removal achieved by ER process. In a scaled-up reactor, the EO/EC/ER process was able to remove 50-60% organic matter and 100% ammonia at charge of 1.5 Ah/L with energy consumption of 15 kW h/m(3). Considering energy cost, the process is more efficient to meet the requirement of organic removal efficiency less than 70%. These results show the feasibility and potential of the EO/EC/ER process as an alternative tertiary treatment to achieve the simultaneous removal of organic matter, ammonia, nitrate, and color of leachate.
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