Process of landfill leachate pretreatment using coagulation and hydrodynamic cavitation oxidation.

Autor: Qiao Y; School of Environment and Safety Engineering, North University of China Shanxi Taiyuan 030051 P. R. China qiaoyina@nuc.edu.cn., Jin R; School of Environment and Safety Engineering, North University of China Shanxi Taiyuan 030051 P. R. China qiaoyina@nuc.edu.cn., Gao J; School of Environment and Safety Engineering, North University of China Shanxi Taiyuan 030051 P. R. China qiaoyina@nuc.edu.cn., Wang K; School of Environment and Safety Engineering, North University of China Shanxi Taiyuan 030051 P. R. China qiaoyina@nuc.edu.cn., Jiang Y; School of Environment and Safety Engineering, North University of China Shanxi Taiyuan 030051 P. R. China qiaoyina@nuc.edu.cn., Xiong J; Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, (Tibet University & Wuhan University), Ministry of Education, School of Ecology and Environment, Tibet University Tibet Lhasa 850000 P. R. China., Jia M; School of Environment and Safety Engineering, North University of China Shanxi Taiyuan 030051 P. R. China qiaoyina@nuc.edu.cn., He Z; School of Environment and Safety Engineering, North University of China Shanxi Taiyuan 030051 P. R. China qiaoyina@nuc.edu.cn., Liu J; School of Environment and Safety Engineering, North University of China Shanxi Taiyuan 030051 P. R. China qiaoyina@nuc.edu.cn.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2023 Nov 02; Vol. 13 (46), pp. 32175-32184. Date of Electronic Publication: 2023 Nov 02 (Print Publication: 2023).
DOI: 10.1039/d3ra04259f
Abstrakt: Landfill leachate poses a threat to the environment and human health, and its complex composition made it difficult to treat. Among the methods for treating landfill leachate, the physicochemical combination method is considered to have significant effectiveness, low cost, and application potential. In this study, we propose a new method of coagulation and hydrodynamic cavitation/chlorine dioxide (HC/ClO 2 ) for treating landfill leachate. The optimal conditions for coagulation and HC/ClO 2 treatment were investigated experimentally. Under the optimal conditions for coagulation, the COD removal rate was 60.14%. Under the optimal HC/ClO 2 treatment conditions, the COD removal rate was 58.82%. In the combined coagulation and HC/ClO 2 process, the COD removal rate was 83.58%. Thus, the proposed method can significantly reduce the organic load before subsequent biological treatment processes, thereby reducing the operation cycles and cost of biological treatment.
Competing Interests: The authors declare no conflict of interest.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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