TECHNOLOGY OF WASTEWATER PURIFICATION FROM DIMETHYLFORMAMIDE

The following research observes the peculiarities, rules and mechanisms of dimethylformamide adsorption from water solutions with the help of activated carbons of different nature and industrial techniques for producing. To receive activated carbon characteristics, the author analyses pore volume and chemical state of carbon surface and applies porosity measurement and potentiometric titration methods. The research helped to reveal cellular structure of the given adsorbents were calculated in isotherms of nitrogen adsorption-desorbtion. Potentiometric titration method was used for the evaluation of oxigen-containing surface acid functional groups (OFG). The analysis of balance, kinetics and dynamics of DMF adsorption from water solutions was carried out. The author found out equilibrium adsorption characteristics, rate-determining step and mass transfer ratio, calculates the parameters of adsorption column and the mode of continuous cleaning process. Mathematical model method helped to receive the following dynamic characteristics of the adsorption process: dynamic capacity, travel rate of operating space, fixed bed operational capacity, bed length, the quantity of water cleared before slip. All these characteristics can be used on practice on real homeland equipment. The author conducted the optimization of the parameters of adsorption column filled with adsorbent AG-OV-1 and the mode of continuous cleaning process. The basis of theoretical calculation is fundamental equation of outer diffusive adsorption dynamics in case of linear isotherm with the use of absorption Dubinin-Radushkevich equation constants and the experimental data on kinetics of DMF absorption from process effluent on carbon adsorbents. The result of the following article is the development of technology of wastewater adsorption cleaning from the organic component, which can help to improve environmental safety and resource conservation by means of prevention of wastewater disposal.