Tag:recirculator

№4|2012

«TECHNOVOD–2012»

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UDC 628.16.066.1

Zhurba M. G., Govorova Zh. M., Gandurina L. V., Govorov O. B., Yelyukov M. V.

Intensification of low-turbidity colored water treatment in a sludge blanket clarifier (part 1)

Summary

The specific features of high colored low turbidity water treatment in clarifiers with sludge blanket during representative time periods with low temperatures and water alkalinity are considered by the example of the Vologda water treatment facilities. The results of investigating chemical pretreatment of water from the Vologa River and Koubenskoye Lake during flood periods with the use of various oxychloride and aluminium sulfate trademarks as well as cationic and anionic flocculants are presented. The advanced methods of enforcing water treatment process in a sludge blanket are covered. The results of studying a «clarifier-filter with floating media» combined system are presented.

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№2|2013

POTABLE WATER SUPPLY

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UDC 628.16.066.7

Volftrub L. I., Yegorov V. F., Staroselets L. N., Panicheva S. A., Lashmanova E. O., Yunok S. A., Moulikov R.

Upgrading flocculation tanks, settling tanks and clarifiers at the water treatment plants

Summary

The methods of improving the design of flocculation tanks, settling tanks and clarifiers with floc blanket based on the use of thin-layer – recirculating flocculation and thin-layer precipitation processes are presented. When employed in new construction the footprint of the facilities is reduced 2–3 times; whereas during the upgrade of the existing facilities their capacity increases together with water quality improvement and reduction of chemical consumption. The design of thin-layer self-cleaning modules manufactured in bulk in the form of polyethylene honeycomb blocks of polyethylene film more than 250–300 μm thick is presented. The positive long-term experience of operating the upgraded facilities located at the public, industrial and power water plants that are purifying natural water of different quality and using different treatment technologies was consolidated.

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