Effect of Microcystis aeruginosa on Disinfection By-Product Formation During Chlorination of Chironomid larvae Metabolites.

Many studies have shown that both Chironomid larvae and Microcystis aeruginosa would form disinfection byproducts (DBPs) under chlorination or chloramination. However, in the natural state, Microcystis aeruginosa and Chironomid larvae exist together. DBPs of chlorination between Chironomid larvae and Microcystis aeruginosa were widely assumed to be "black box." This study focused on effects of Microcystis aeruginosa on DBP formation during the chlorination of Chironomid larvae metabolites. Results of the study suggest that the presence of Microcystis aeruginosa not only influences the concentration of DBPs from Chironomid larvae metabolism, but also changes the trend of individual DBPs. Results suggest that Microcystis aeruginosa may change the trend of chloropicrin (TCNM), and Microcystis aeruginosa may promote TCM, 1,1-DCP, 1,1,1-TCP, and TCNM formation, while inhibiting the accumulation of DCAA and TCAA. Results illustrate the mechanism of Microcystis aeruginosa participating in DBP formation during chlorination of Chironomid larvae. [ABSTRACT FROM AUTHOR]