ZHOU Zi-chong,YANG Xu,XIAO Rong,et al.Technical Principle and Application of Multi-point Chlorination in High Algae Water Treatment[J].China Water & Wastewater,2021,37(12 12):109-115.
Technical Principle and Application of Multi-point Chlorination in High Algae Water Treatment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
12 12
Page:
109-115
Column:
Date of publication:
2021-06-17
- Keywords:
- Taihu Lake basin; drinking water; high algae; multi-point chlorination; disinfection by-products
- Abstract:
- In the Taihu Lake basin, with rapid economic development and high population density, some regional water sources are still facing water quality problems such as eutrophication of water bodies and seasonal outbreaks of cyanobacteria blooms. This article summarizes the water quality characteristics of high algae water sources in the Taihu Lake basin and the challenges faced by the water purification process. From the perspective of disinfection by-products control, the principle of multi-point chlorination technology in waterworks is introduced.This paper also explains the water purification connotation of multi-point chlorination technology in which chlorine is dosed at water intake (pre-chlorination), before coagulation tank, before sand filter, after activated carbon filter as well as into finished water. Through the longscale continuous monitoring and evaluation in the past ten years, the multi-point chlorination process has demonstrated the synergistic control effect of carbonaceous and nitrogenous disinfection by-products, and provided a reproducible and referenceable process plan for waterworks using lake reservoir-type water sources such as Taihu Lake.
Last Update:
2021-06-17