Study On Water Treatment Technology Of Daqing Oilfield

The shortage of water resources is more and more serious. In the same time, waterpollution is a common problem. This topic study on the raw water qualityimprovement, raw water pretreatment, enhanced coagulation, enhanced filtration,advanced treatment and Disinfectant. The technology can help Daqing Oilfield watersupply company improving the effect of water treatment, also can Reduce the cost.Especially, The technology can ensure water quality in the algae outbreak period.The experimental results are as follow(1)The final water treatment technology is deepwater aeration, Pre-oxidation withChlorine Dioxide, Enhanced coagulation with Poly Aaluminum Ferric Chloride,Enhanced deposit with secondary micro-Coagulation, Disinfectant with ChlorineDioxide and Chloramines, Advanced treatment with activated carbon.(2)Deepwater aeration discontinuous running, Aeration7days stop for7days. Theamount of Chlorine Ddioxide used in pre-oxidation is0.5mg/L.(3) Coagulation and secondary micro-coagulation used Poly Aaluminum FerricChloride, The amount of Poly Aaluminum Ferric Chloride used in secondarymicro-coagulation is0.1～0.2mg/L.