The structure and reaction path of the doublet \[Si, O, C, P\] radical were explored by density functional theory and ab initio levels. Thirteen isomers connected by 15 interconversion transition states are located at the B3LYP/6-311G(d) level. At the QCISD/6-311G(d) level, one cyclic O-cCSiP5 and two bent isomers OSiCP1 and SiCPO3 are stable isomers. The bonding nature of the three isomers and the reaction path of isomers 1 and 5 were analyzed. The predicted structure and reaction path are expected to be informative for the identification of \[Si, O, C, P\] in the laboratory and space detectation.

The treatment of concentrated wastewater produced in the oil field was studied via self-made oily-water segregator. This laboratory apparatus comprises corrugated plate with pressurized dissolved-air flotation technology. The effects of the oil concentration of wastewater and influent flow on the removal efficiency of oil were mainly investigated. When the temperature is 50 ℃, influent flow rate is 70 L/h, the coalescence plate is coated by the galvanized paint, the removal efficiency of oil is up to 86.4%.

Dealing with oily wastewater by polymer material, the absorbance change before and after treatment with UV spectrophotometry was determined to calculate the oil removing rate. Some factors on the rate of removing oil including the type of polymer material, operation temperature, working time and the amounts of polymer material were investigated, and the experimental results show that the rate of removing oil can reach more than 60% when the polyvinyl chloride is used as the agglomerating material, the temperature of water is 60 ℃, the mass ratio of agglutinating [KG*3]material's[KG*3] to [KG*3]waste[KG*3] water[KG*3] is [KG*3]0.6 g/mL, the working time is 10 min.