Intensification of oily waste waters purification by means of liquid atomization

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Eskin, A.A.^1 ; Tkach, N.S.^1 ; Kim, M.I.^1 ; Zakharov, G.A.^1

Department of Engineering Systems of Buildings and Constructions, Far Eastern Federal University, Vladivostok

690950, Russia^1

关键词: Dissolved air flotations;    High-energy costs;    Interfacial areas;    Liquid atomization;    Liquid saturation;    Polluting agents;    Saturated liquid;    Wastewater purification;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/4/042002/pdf
DOI  :  10.1088/1755-1315/87/4/042002

来源: IOP

【 摘 要 】

In this research, a possibility of using liquid atomization for improving the efficiency of purification of wastewater by different methods has been studied. By the introduced method and an experimental setup for wastewater purification, saturation rate increases with its purification by means of dissolved air flotation. Liquid atomization under excess pressure allows to gain a large interfacial area between the saturated liquid and air, which may increase the rate of purified liquid saturation almost twice, compared to the existing methods of saturation. Current disadvantages of liquid atomization used for intensification of wastewater purification include high energy cost and secondary emulsion of polluting agents. It is also known that by means of liquid atomization a process of ozonizing can be intensified. Large contact surface between the purified liquid and ozone-air mixture increases the oxidizing efficiency, which allows to diminish ozone discharge. Liquid atomization may be used for purification of wastewaters by ultraviolet radiation. Small drops of liquid will be proportionally treated by ultraviolet, which makes it possible to do purification even of turbid wastewaters. High-speed liquid motion will prevent the pollution of quartz tubes of ultraviolet lamps.