Heterotrophic Bacteria in Industrial Recycling Cooling Water System

In this paper, industrial recycling cooling water system of a thermal power station in Beijing was selected. This system was made up by urban reclaimed water since 2007. The growth of heterotrophic bacteria was analyzed. Spring and summer test results showed, both in make up water and cooling water, the total numbers of heterotrophic bacteria in summer were all much higher than theirs in spring. The total number in summer exceeded the standard. Test results on different points in the circuit showed that, whether in spring or summer, the total number of heterotrophic bacteria in condenser was the largest. Therefore, more strict measures should be taken to control growth of heterotrophic bacteria in summer.