The pollutants in cleaning wastewater of gas turbine compressor are mainly refractory dissolved organic matters

and the mass concentration of the organic matters (COD) is 2 132 mg/L

which can not be degraded by conventional biological method

coagulation method or ozonation method.For this reason

the Fenton-coagulation combined process is used to treat the cleaning wastewater of a gas turbine compressor

and the wastewater can meet the discharge standard after optimizing the process conditions.The results show that

the optimum treatment condtions of the Fenton-coagulation process are as follows:the initial p H value is 3

the mass ratio of H_2O_2 to CODis 1.594 0

the molar ratio of H_2O_2 to Fe~(2+)is 22

the reaction time is 30 min

the reaction temperature is 80℃

the dosage of coagulation PAFC is 5 mg/L

and the dosage of coagulation aid PAM is 0.5 mg/L.The dissolved organic pollutants in the cleaning wastewater were removed by Fenton oxidation

and the mass concentration of COD was reduced to 320 mg/L

with a removal rate of 85.0%.The coagulation process can efficiently remove the suspended solids and chromaticity produced by Fenton reaction

with removal rates of 98.6%and 99.0%.