Discussion on Factors Affecting the Removal of Organic Pollutants in Reverse Osmosis Concentrated Water of Landfill Leachate

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Huang, Xing Hua^1 ; Chen, Qiu Lin^1 ; Xin, Peng^1 ; Liu, Hong^2 ; Jia, Zhen Fu^1

College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing

401331, China^1

Security College, Chongqing University of Science and Technology, Chongqing

401331, China^2

关键词: Best coagulant;    Coagulation effects;    Landfill leachates;    Leachates;    Removal rate;    Removal rate of cods;    Rotation speed;    Total organic compounds;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/4/042022/pdf
DOI  :  10.1088/1755-1315/310/4/042022

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Landfill leachate reverse osmosis concentrated water (RO concentrated water) is a kind of wastewater with high organic matter concentration, chemical oxygen demand (COD), turbidity, and chroma. The RO concentrated water is pretreated using coagulation method; then the coagulation effect of FeCl3, Fe2(SO4)3, Fe(NO3)3 and PAC on the leachate RO concentrated water is investigated in the experiment. The result shows that FeCl3 is the best coagulant. The removal rate of total organic compounds (TOC) reaches the highest (92.23%) under the condition of 8.0 g/L FeCl3 dosage, pH=6, 3 mg/L PAM, and 150 r/min rotation speed, and the removal rate of COD, NH3-N, and chroma are 73.91%, 28.3%, and 79%, respectively.