Synthesis and study of new nonionic polyether water clarifier for oily wastewater

Abstract

AbstractIn order to solve the problem of oily wastewater treatment in Shengli Oilfield, tert‐butyl phenol (TP) series nonionic polyether water clarifiers were synthesized by polymerization with p‐tert‐butyl phenol (PTBP) as the initiator. The water clarifiers were characterized by Fourier‐transform infrared spectroscopy (FT‐IR) and the interfacial tension test was carried out. The TP series of water clarifiers effect were evaluated by the oil content and suspension content in the clean water experiments. In addition, the effects of dosage and temperature on the water effect were discussed through the control variable method. The experimental results showed that the oil removal rate of TP6 can reach 95% and the suspension removal rate can reach 92% when the dosage of water clarifier was 40 mg/L, the cleaning water temperature was 55°C, and the cleaning water time was 30 min. The oily wastewater colour after cleaning was clear and transparent with the TP series of water clarifiers, and the effect was better than with commercial water clarifiers.