FANGHua,YANGShun,ZHAOJin-yu,et al.Characteristics of Magnetic Coagulation for Pollutants Removal from Black and Odorous Water[J].China Water & Wastewater,2023,39(15):70-74.
Characteristics of Magnetic Coagulation for Pollutants Removal from Black and Odorous Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第15期
Page:
70-74
Column:
Date of publication:
2023-08-01
- Keywords:
- magnetic coagulation; magnetic mud reflux; black and odorous water; pollutants removal efficiency; coagulation mechanism
- Abstract:
- This paper investigated the characteristics and mechanism of three processes including coagulation, magnetic coagulation and magnetic coagulation with mud reflux for pollutants removal from black and odorous water on the basis of process optimization. The particle size of micron magnetic seeds had no significant effect on the turbidity removal performance of magnetic coagulation, and the pollutants removal performance was better when adding magnetic seed and refluxing magnetic mud in rapid stirring stage. Magnetic coagulation and magnetic coagulation with mud reflux enhanced the removal performance of ammonia nitrogen, total phosphorus and COD from black and odorous water by improving the removal ability of insoluble pollutants. Magnetic coagulation and magnetic coagulation with mud reflux formed denser and more compact magnetic floc, which greatly improved the settling velocity. The returned magnetic mud significantly decreased the surface potential of colloidal particles in water, and thus greatly reduced the dosage of coagulant.
Last Update:
2023-08-01