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UDC 504.062.4:628.334

Orlov B. V., Boykova I. G., Pechnikov V. G.

Ecological Rehabilitation of the Moscow Municipal Wastewater Disposal System

Summary

The suggestions about modernization of the disposal and treatment system of surface runoff from the territory of Moscow with due regard for environmental requirements set for water objects-water receivers have been developed by specialists of MosvodokanalNIIproekt on the basis of investigations of many years. The prognosis of possible reduction in pollution level of the city’s water objects as a result of execution of complex of measures aimed at the reconstruction of the wastewater disposal system and enhancement of the level of improvement of the city’s territories has been made on the basis of the analysis of change of pollutants concentration in the surface runoff in the course of its movement along the different parts of the wastewater disposal system. The suggestions take into account interconnection and interaction of all city’s water-management systems and can be used for search of optimal solutions concerning organization of surface runoff disposal and treatment for certain water collecting basins as well as in the course of actualization of the General scheme of disposal and treatment of surface runoff from the territory of Moscow together with the Program of rehabilitation of the city’s water objects.

Key words

treatment facilities , sewerage , surface runoff , water object , granulometric composition of pollutants , biopond , the concentration of oil products

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UDC 628.32/.356.085

Linev S. P., Grigorieva E. V., Minakova N. S., Voskoboynikova V. E.

The Lipetsk Aeration Station at the Service of Ecological Safety of Region

Summary

The plan of development of the biological treatment facilities of the city of Lipetsk using the modern technologies and equipment for waste water treatment is presented. The experience of attraction of investments under conditions of limited budget financing is considered. A full complex of actions on reconstruction of treatment facilities will make it possible to ensure high-quality treatment of the city’s waste water in accordance with the requirements for discharge into fisheries water bodies, which will improve the sanitary-epidemiological conditions of the Voronezh River.

Key words

treatment facilities , reconstruction , ultra-violet disinfecting , nitri-denitrification , ecological safety , frequency-regulated electric drive

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UDC

Berezin S. E.

On the Benefit of the Initiative 7 = 2

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UDC 628.336.429:504.009

KERIN A. S., Sidorov S. M., Sokolova E. V.

The Use of the UGOS-110 Installation in Technological Processes of Wastewater Sludge Treatment

Summary

Results of the study of possibility of using the UGOS-110 installation for enhancement of efficiency of excess activated sludge in the flow charts of domestic wastewater treatment are described. Non-densifying activated sludge from the secondary settling plants was treated. As a result it is established that the use of UGOS-110 equipment is the most preferred at facilities of biological treatment of domestic wastewater with output of up to 3000 m³ per day. It makes it possible to improve the level of sludge dewatering, reduce the flocculant consumption, cut equipment costs.

Key words

wastewater , biological treatment , surplus active silt , dehydration , flocculant , sludge moisture content , compaction