The breeding of marine mollusks in once-through cooling system of coastal power plants can not be effectively controlled using the conventional mechanical removal and organochlorine fungicide addition method.To solve this problem

this paper analyzes the advantages and disadvantages of the regular control methods for marine biology growth

and introduces the TRL-2004 Cenvironmentally friendly sea creatures inhibitor.The action mechanism of this TRL-2004 Csea creatures inhibitor was presented

and its effectiveness was verified by the polluted marine biology performance test and micro marine biology performance test.Moreover

the application of the TRL-2004 Csea creatures inhibitor in the once-through seawater cooling system was monitored.The results show that

after four years' application of this inhibitor dosing alternately with sodium hypochlorite dosing regimen

the marine fouling organisms inhibition rate reached up to80%

and nearly no pollutant sea creatures was found in the cooling system.The occurrence of condenser tube blockage caused by shellfish growth didn't occur again.The heat transfer performance of the condenser titanium tube

closed loop cooler and vacuum pump cooler was improved

indicating a considerable economic benefit and social benefit.It provides an effective solution for pollutants control for marine organisms in once-through seawater cooling system.