Application of the Biofilm Technology in the Water Environment Improvement Project

Abstract

The river plays an important role in the development of the human society. But because of the rapid development of the cities, human overuse of river water and random discharge of pollutants into the rivers, the pollution of river water environment is becoming more and more serious. The biofilm technology is used to repair the water environment of the river in order to purify the water body and improve the overall water environment of the river. Water samples were collected from the trial river channel. In the initial stage, samples were taken once a day. After stable operation, the sampling interval was 4 days, 7 days and 11 days. A total of 14 water samples were collected. The results showed that the removal rate of ammonia nitrogen (NH₄+-N) reached 65.28% from M1 to M2 after 32 days of stable operation of the microbial membrane. And that reached 66.67% from M1 to M2. The research shows that the effect of removing NH₄+-N by in-situ biofilm technology is obvious. It can effectively improve the river water environment and provide reference for the in-situ treatment of urban rivers.