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UDC 628.161

Govorova Zh. M., Govorov O. B.

Water treatment facilities, units and technologies with floating polymer bed (design and introduction experience)

Summary

The principal stages of designing water treatment facilities and units with granules of expanded crushed and uncrushed polysterene with the density less than the water density used as filtering bed are presented. The theoretical concepts and distinguishing features of water clarification process in a styrofoam layer are considered. The history of water clarification process in styrofoam layers at the specific structure of the granulated layer depends primarily on the quality of incoming water, filtration rate and surface properties of the bed. The dominant parameters of the surface water quality in this case are as follows: dispersiveness and suspended matter concentration, kinetic stability of its colloid particles. During filtration of effluents after biochemical treatment in addition to the above-mentioned parameters the microbial life-sustaining activities play an important role. The process parameters of various filters with floating bed (FPZ-1, …, FPZ-6, AFPZ-4М) and bioreactors with jet vacuum ejection are quoted. The positive experience of the introduction and operation of these facilities as part of water intake and purification complexes, natural water treatment plants, underground water conditioning plants and domestic, industrial and storm wastewater tertiary treatment plants is considered. Lately the increase of anthropogenic impact on the water sources have raised the demand for carrying out process experimental studies with real water of different water purification processes including filtration in filters with floating polymer bed at large-scale pilot plants. Based on the obtained results of the studies of water purification processes the recommendations for designing a water intake and purification complex were developed and implemented during its construction.

Key words

filter , deferrization , natural and waste water , aftertreatment , floating polymer bed , clarification of low-concentrated suspensions

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