Related Experiment Video
Updated: Jul 7, 2026

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
Published on: July 10, 2015
[Optimal process combination for control of disinfection by-products and precursors during high algae laden period]
Chao Chen1, Xiao-jian Zhang, Lin-xia Zhu
1Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
Abstract:
Traditional pre-chlorination process would lead to high yield of DBPs during high algae laden period. It had been compared that the efficiency of control disinfection by-products and their precursors by two classes and total 7 kinds of process combination. Algae were proven to be important DBP precursor and it contributed about 20% of HAA and THM precursor. Air floatation was key process to remove algae and it could also reduce the precursor concentration in some degree. Ozone or potassium permanganate also had good efficiency on algae removal, and precursor as well. The best process combination for DBPs and their precursor removal is pre-oxidation of ozone or potassium permanganate plus conventional process plus ozone-BAC process. Sequential chlorination can reduce 42.0%-45.9% HAA yield and 22.5%-71.4% THM yield of free chlorination.
More Related Videos
Related Concept Videos
Upstream Processing
Production of Alcohol
Bioreactor Controls-I
Bioreactor Controls-II
Downstream Processing
Microbial Wastewater Treatment

