Sabliy L. Physic-chemical and biological treatment of high concentrated wastewater

Established complex technologies are based on the theoretical analysis of the physic-chemical and biological treatment processes and the features of high-concentrated wastewater from different industries (leather, fur, textile, food and other). The technologies give high quality wastewater treatment according to discharge norms. Analytical and mathematical computative models establish of the functional connection between hydrodynamic and structural parameters of the bioreactors. It is developed, investigated in experimental and industrial conditions and applied in industry the effective technologies of preliminary physic-chemical treatment with the methods of flotation, electrocoagulation-flotation, biocoagulation-flotation and followed after anaerobic-aerobic method in the direct system of bioreactors with immobilized microorganisms. The solution of this important scientific and technical problem ensure to treat wastewater from toxically matter such as surfactants, grease, dyes, heavy metals, to transform of colloidal-dissolved high-molecular organic compounds to the biological degradated forms. It is provided with the following anaerobic-aerobic treatment effective removal of high concentrations of organic matter in terms of COD in 96-99%, reduction of air expenses to 50% and amount of biomass to 30% and increasing its mineralization over 50%. The results of industrial using of technologies confirmed their technical and economic efficiency, low-waste and the quality of the treated water according to established standards.