| With the economic and social development, The Yellow River water has been polluted increasingly. The characterics of Yellow River reservoir water are eutrophied with low turbidity, high algae, high organic pollution, which has threatened the safety of drinking water seriously. A water plant in JiNan, with the Quehua Reservoir water as water resource, uses conventional technology. The traditional water Treatment technology can not meet the demand of quality changes of contaminated original water. The chlorination processs will generate carcinogenic trihalomethane compounds (THMs), which reduce the quality of drinking water safety. So, it is necessary to study and applicate the advanced drinking water treatment technologies to access to high quality drinking water.This paper analyzed the Yellow River water quality characteristics, studied treatment effect of the Yellow River Reservoir on various processes and Put forward the best treatment parameters by the pilot studies on the strengthening conventional treatment process, pre-oxidation process, ozone/activated carbon treatment process as well as various combinations of technology. The following conclusions are drawn:1.Yellow River reservoir water was seriously polluted by organic pollutants. The CODMn of the raw water was 2.34～4.69mg/L, and 3.14mg/L on the average.The UV254 was 0.030～0.059cm-1, and 0.046cm-1 on the average. Ammonia-nitrogen concentration was not high. The raw characterics were with low turbidity, organic pollution and high algae. The water quality changed obviously with the seasons, high algae and high turbidity in summer and autumn while low temperature and low turbidity in winter. The distribution of solid particles in raw water showed that the particles with diameter of 10μm are the majority and the particles with the diameter of 1～10μm accounted for 99.5% of the total number of particles.2.Microbial flocculant enhanced coagulation process improved the flocculation and the removal efficiency of conventional technology. The removal efficiency of Turbidity, color, organic pollutants, nitrogen and chlorophyll a was also improved significantly.3.Ozone pre-oxidation, potassium permanganate pre-oxidation and chlorine dioxide pre-oxidation were effective in bleaching, eliminating algae and improving the flocculation. The pre-oxidation process could reduce the burden of follow-up process and improved the removal of CODMn,UV254 and algae.4.The conventional treatment process combined with ozone-biological activated carbon was applied in the pilot-scale advanced treatment of micro-polluted Yellow River reservoir water. The experimental results showed that the O3-BAC process could significantly remove organic pollutants from the Yellow River reservoir water. The process had high removal efficiency on turbidity, and also could significantly reduce solid particles out of the water with the solid particulate matter removal efficiency up to 99%.5.For micro-polluted Yellow River reservoir water, "Ozone pre-oxidation + conventional treatment + O3-BAC" should be ideal advanced treatment process technology. The process could effectively remove trace organic pollutants, guarantee stability and security of drinking water by the comprehensive effects of ozone-pre-oxidation enhanced coagulation, decomposition by ozonation, activated carbon adsorption and biodegradation.6.In the "Ozone pre-oxidation+conventional treatment+03-BAC" advanced treatment process, the optimal dosage of pre-ozone and main ozone were 1～2mg/L and 2mg/L respectively.7.In the O3/H2O2 advanced oxidation process, adding H2O2 promoted ozone to generate hydroxyl radical, and increased the oxidative capacity of the system. O3/H2O2-BAC Process was better than O3-BAC Process. For micro-polluted Yellow River reservoir water, in the O3/H2O2 advanced oxidation process the optimal dosage of ozone was 2mg/L, and the best molar ratio of hydrogen peroxide and ozone is 0.5 to 0.75.
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