Open AccessStudy on Treatment of Mineral Processing Wastewater by Ozone Combined Catalytic Oxidation
Author(s) -
Guoqiang Chen,
Bin Chen,
XiaoSong Yang,
Shao Li-nan,
Cai Sun
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/804/4/042027
Subject(s) - tailings , wastewater , mineral processing , waste management , catalysis , sewage treatment , natural mineral , environmental science , ozone , chemistry , pulp and paper industry , environmental engineering , mineralogy , engineering , organic chemistry
At present, most non-ferrous metal mines treat Mineral Processing Wastewater by natural degradation of tailings pond. Some residual mineral processing agents were decomposed after the waste water passed through the tailings pond, but a large number of mineral processing agents remained in the water quality could not meet the discharge standard requirements. Conventional oxidation process has disadvantages of large dosage and high cost. In this study, ozone composite catalytic oxidation method was used to treat COD of mineral processing wastewater. According to the experimental results, when the dosage of homogeneous catalyst Mn2+ was 2mg/L, the volume ratio of heterogeneous catalyst dosage wastewater and KYO-1 catalyst was 3:1, and the dosage of ozone was 20mg/L, COD of wastewater after oxidation decreased from 155 to 35mg/L.It meets the discharge standard and the operation cost is about 0.8 yuan/ton of water.