WUChang-you.UV/Persulfate Pre?oxidation Enhanced Coagulation for Simultaneous Removal of Algae and Trichlorophenol[J].China Water & Wastewater,2023,39(1):45-48.
UV/Persulfate Pre?oxidation Enhanced Coagulation for Simultaneous Removal of Algae and Trichlorophenol
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第1期
Page:
45-48
Column:
Date of publication:
2023-01-01
- Keywords:
- UV/persulfate (UV/PS); Microcystis aeruginosa; trichlorophenol; pre-oxidation; coagulation
- Abstract:
- The effect of UV/persulfate (UV/PS) pre-oxidation enhanced coagulation process on simultaneous removal of Microcystis aeruginosa and trichlorophenol (TCP) was investigated. After UV/PS pre-oxidation enhanced coagulation and precipitation, the removal rate of OD680, Chl-a, turbidity and TCP were increased by 66.2%, 67.4%, 51.7% and 95.6%. The optimal dosage of PS in the UV/PS pre-oxidation stage was 100 mg/L, and the optimal pre-oxidation time was 10 min. UV/PS pre-oxidation damaged the cell integrity which resulted in the release of intracellular organic matter (IOM) from algae, thus further destroyed the nucleic acid. In addition, UV/PS pre-oxidation also reduced the Zeta potential on the surface of algal cells, changed the cell size, and enhanced the removal of algal by coagulation.
Last Update:
2023-01-01