Open AccessDiscussion on Factors Affecting the Removal of Organic Pollutants in Reverse Osmosis Concentrated Water of Landfill Leachate
Author(s) -
Xing Huang,
Qiu Lin Chen,
Xin Peng,
Hong Liu,
Zhen Fu Jia
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/310/4/042022
Subject(s) - leachate , reverse osmosis , turbidity , chemistry , coagulation , chemical oxygen demand , wastewater , organic matter , pollutant , environmental chemistry , pulp and paper industry , environmental engineering , environmental science , membrane , organic chemistry , psychology , biochemistry , oceanography , psychiatry , engineering , geology
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 FeCl 3 , Fe 2 (SO 4 ) 3 , Fe(NO 3 ) 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 FeCl 3 dosage, pH=6, 3 mg/L PAM, and 150 r/min rotation speed, and the removal rate of COD, NH 3 -N, and chroma are 73.91%, 28.3%, and 79%, respectively.