dissolved air flotation – wastewater treatment in russia

dissolved air flotation – wastewater treatment in russia
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  • What is dissolved air flotation?
  • Dissolved air flotation is very widely used in treating the industrial wastewater effluents from oil refineries, petrochemical and chemical plants, natural gas processing plants, paper mills, general water treatment and similar industrial facilities. A very similar process known as induced gas flotation is also used for wastewater treatment.
  • What is dissolved air flotation (DAF) technology?
  • Dissolved air flotation (DAF) technology is one of the efficient techniques for purification of many types of wastewaters which contain pollutants less dense than water. Nowadays, due to high quality standards, wastewaters should be treated with high quality wastewater treatment techniques which meet the appropriate standards.
  • What is flotation treatment?
  • The flotation method was first used for ore dressing in the mining industry over a century ago. During flotation treatment, dispersed contaminants are fixed on the surface of air bubbles (flotation aggregate formation) resulting from physical and chemical interaction of three phases (water – air – particle).
  • How to increase dissolved air flotation efficiency?
  • Conclusion A theoretical analysis of principal guidelines to intensify the flotation wastewater treatment has evidenced the feasibility of increasing dissolved air flotation efficiency by reducing the depth of the flotation zone. A technique based on using lamellae elements facilitates a significant reduction in the depth of the flotation zone.