Estimating the effect of synthetic surfactants on the ecosystem
of a small watercourse

Summary

The results of studying the impact of anionic surfactants on the physicochemical and biochemical processes in the ecosystem of a small eutrophic watercourse by laboratory modeling are presented. It has been established that anionic surfactants inhibit nitrification processes in proportion to their concentration in water; migration of phosphates from bottom deposits occurs intensively in the concentration range of 0.02–0.1 mg/dm³, which is equivalent of the level of the studied watercourse pollution. At the concentration of anionic surfactants from 1.2 to 4 mg/dm³ in the model solution, the migration of phosphate ions from the bottom deposits deceased. Correlation analysis was used to study the effect of the composition of water and bottom deposits on the mobility degree of phosphate ions in the watercourse ecosystem.

Key words

phosphates , laboratory modeling , minor stream , anionic surfactants , mobility degree , correlation