Treatment of wastewater emulsion using microwave assisted flocculation and adsorption
Study on treatment of emulsion wastewater using chemical flocculation and activated carbon adsorption under rmcrowave irradiation is presented in this paper.The stabilities of the simulated emulsion wastewater with various concentrations were estimated using UV-vis absorbance and zeta potential.After Fe2(SO4)3 of 25 mg was added into a 100 mL emulsion wastewater with 2,500 mg/L,foliowed with microwave irradiation of 850 W for 80s and sedimentation time of0.5h,its oil removal reached above 85％.Compared with conventional flocculation and conventional heating assisted flocculation,this microwave assisted flocculation evidently reduced the dosage of flocculant and the sedimentation time.At the optimum pH 0f 5.1,the dosage was minimum.In the case of relatively low concentration of emulsion wastewater,granular activated carbon in stead of Fe2(SO4)3,had better function to demulsify under Imcrowave irradiation,The Oil removal was up to above 90％in an emulsion wastewater with 1,000 mg/L.Low rmcrowave power m a certain extent and long irradiation time help to demulsification.Treatment of an emulsion wastewater from mechanical industry using this process showed that CODcr and oil were almost completely removed,as well as its biodegradability increased from 0.004 to 0.215.
Wastewater emulsion Demulsification Mljcrowave
Ning MA Yaobin ZHANG Xie QUAN Yazhi ZHAO
Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education,China),School of Environmental and Biological Science and Technology,Dalian University of Technology,Dalian 116023 China
国际会议
西安
英文
763-774
2008-05-15（万方平台首次上网日期，不代表论文的发表时间）