As high-speed wire rod has been used for cooling the bearings in the rolling mill directlu,the circulating rate is an high as over 95%.The oil content and suspended matter in water have seriously exceeded the set standard, and the appearance quality of the finished products has been seriously been infoluenced.Thus custoners'dissatisfaction emerges.It is demanded by the corporationthat the key problems on turbid circulating water qualitu has to be solved immediately,to assure the product quality and the normal running of the sysytem.