Effect of substrate pre-oxidation on SiO_2/S composite coating deposited on HP40 alloy;

Research on Treating Slight-polluted Source Water by Pre-oxidation of Potassium Permanganate & Sodium Hypochlorite and Conventinal Process;

Test of effect of pre-oxidation on coagulation efficiency;

Effect of preoxidation temperature on core/shell structure during the preoxidation procession of PAN fibers;

Study on properties in the preoxidation of PAN fiber;

Study on preoxidation process of polyacrylonitrile precursor;

Papermaking wastewater was treated by process of pre oxidation coagulating sedimentation in the study.

Compared with the effect of algae removal only by PolyAluminium Chloride (PAC) coagulation treatment, the effect of removal on Oscillatoria from raw water, which was extracted from Tiegang reservoir, by ferrate pre oxidation coupling with the PAC coagulation was studied.

The melt of sample by the pre oxidation and the addition of the glassing reagent has been developed in order that sulphide ores can be analysed by XRF The proposed method makes the analytical procedure of sulphide ores rapid and analytical results more accurate The method has met the demands of the routine analysi

Studies on effect of purple salt preoxidization in surface water plant;

Thermal behavior of polyacrylonitrile fiber during preoxidization in ozone atmosphere;

Porous carbon membranes were prepared from petroleum pitch by binderless molding method, while the effect of preoxidization performance of sample and preoxidization conditions its gas permeating seletive were investigsted.

Advanced treatment of sewage secondary effluent by preozonation/biological aerated filter(BAF);

The objective was to determine: the contribution of algae cells and algae extracellular organic matter(EOM) to the disinfection by-products formation potential(DBPFP),and the effects of preozonation including ozone dosage and preozonation time on DBPFP of algae cells and EOM and mechanism of these effects.

Experiments were conducted with preozonation-floating filter and ozone-DAF-floating filter for treatment of water from Queshan Reservoir.

Using ozone preoxidation process before the biochemical treatment of the wastewater cangreatly improve the removal rate of COD,decrease UV254 and chroma,and improve the biodegradability of the wastewater at the same time,furthermore,its products during the treatment processhas only a little influence on the environment;therefore,as a pretreatment method,it is very effective.