Applying automatic disinfection at Magadan water treatment facilities

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UDC 628.334.1

Monster Grinder Screens for shredding wastewater coarse pollutants

Summary

The operating principle of Monster Grinder Screens that capture and shred coarse fractions present in wastewater is described. The use of Monster Grinder Screens allows to protect the pump unit against clogging, to provide for fully automatic operation of wastewater pumping stations, to reduce power consumption, to reduce the size of pumping stations, to reduce capital expenses, to reduce the construction period, to eliminate hazardous and harmful labor conditions for the personnel.

Key words

wastewater , pump , grinder screens , cutter , filtering drum

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UDC 628.16.08

Govorova Zh. M., Magomadov Z. R.

Production of drinking water from small-scale water reservoirs

Summary

Production of drinking water for domestic use from small-scale water reservoirs with limited yield and initial water quality formed under natural and anthropogenic impact is of special interest. The methods of water pretreatment (chemical free removal of phytoplankton in prefilter with floating medium and oxidant integrated effect) are considered; their contribution to the improvement of water coagulation process has been experimentally proved. The method of calculating coagulant dosage with the use of the coagulation capacity complex factor that takes into account inter alia the effect of zeta potential is suggested. Advanced technologies of water treatment are considered; the results of their industrial-scale testing are presented.

Key words

phytoplankton , primary filter , small-scale water reservoir , water pretreatment , oxidant , coagulant dosage , coagulation capacity complex factor , zeta potential

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UDC 628.112.24

Melnikova T. V., Didenko V. G., Yurkiv N. I.

Developing biopolymer drilling mud for water supply well construction

Summary

The results of experimental studies of the effect that different drilling mud compositions produce on the colmatage of a bottom-hole zone are presented. The studies aimed at developing process liquids that preserve the reservoir properties and ensure environmentally safe construction and operation of water supply wells. The use of traditional slurries causes pollution of both the reservoir and bottom-hole zone. The efficient stabilization of the reservoir properties is ensured by the use of non-dispersing biopolymer drilling mud with the addition of acid-soluble sealant that prevents the invasion of filtrate and drilling mud into reservoir, bottom-hole zone, and preserves at most their collecting properties (for 70–80%).

Key words

water well , colmatage , bottom-hole zone , reservoir properties , permeability , drilling mud

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UDC