DUANYu-ting,YUShui-li,XIAOQian.Research Progress on Advanced Reduction Processes for Degradation of Organic Disinfection By-products[J].China Water & Wastewater,2022,38(6):38-43.
Research Progress on Advanced Reduction Processes for Degradation of Organic Disinfection By-products
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第6期
Page:
38-43
Column:
Date of publication:
2022-03-17
- Abstract:
- Organic disinfection by-products pose a serious threat to drinking water safety. Advanced reduction processes （ARPs） based on reducing free radicals have received widespread attention in China and abroad because of their highly efficient degradation of organic disinfection by-products and more stable performance over a wide pH range. This review describes the effectiveness of ARPs for the degradation of organic disinfection by-products. It is pointed out that the mechanism is that the reducing agent generates reductive free radicals with strong reducing ability after activation, and the reductive free radicals attack the carbon halide bonds or other unsaturated bonds of the organic disinfection by-products, thereby removing the organic disinfection by-products. The critical factors were further discussed, including solution pH, reductant concentrations, light intensity, the presence of natural organic matter and coexisting ions, as well as dissolved oxygen. Finally, the existing problems of the technology and the probable development trend of degradation of organic disinfection by?products by ARPs was summarized in order to promote the development of ARPs.
Last Update:
2022-03-17