Taking the chemical wastewater treated by two phase coagulation-ultrafiltration as research object,the stability and effect of reverse osmosis desalination process were investigated in the test.The membrane properties influenced by operating conditions and wastewater quality were judged through desalination rate and permeation flux.The results showed that after the stable operation of the process the average removal rate of COD and conductivity was 94.38% and 98.20% respectively.At a constant pressure(0.85 ...