bbk 000000
УДК 628.1/.2:658.26.004.18
LEZNOV B. S., Vorobiev S. V. , Iskhakov Yu. B., Tchebanov V. B., Koptev V. S.
Power audit of water and wastewater utilities
Summary
The aspects of investigating power efficiency (power audit) of the water and wastewater utilities are considered and basic guidelines on the auditing procedure are given. Power audit shall include thorough investigation of the basic water treatment and conveying technologies. Power audit shall be carried out by professional companies experienced in working at water and wastewater utilities, and applying relevant technologies. Herein it is reasonable to use a target power auditing program as well as a special power certificate that reflect technologic features that determine the utility power consumption.
Key words
adjustable electric drive , aeration , pumping station , water supply-sewerage services , power audit , air blower unit , power efficient system
|
bbk 000000
UDC 628.146
Zaytseva S. G.
The use of advanced pipe accessories as a method of reducing water losses and improving energy efficiency
Summary
The reduction of physical water losses alongside with the improvement of water distribution energy efficiency is an important challenge both in Russia and all over the world. Described in the paper is the method of water losses reduction developed by the International Water Association (IWA) on the basis of four directions of activities, i. e. pressure control in the distribution network; leak detection and elimination; routine maintenance, repair and rehabilitation of the fittings and pipes; prompt elimination of distribution network failures. Comprehensive activities in the abovementioned fields allow reducing water losses to an economically acceptable level. Simple and efficient measures are replacement of valves and fittings as well as introduction of advanced safety valves, repair accessories and pressure control valves in the distribution network.
Key words
energy efficiency , valves , shut-off and control valves , reduction of water losses , pipeline repair , pressure control in the distribution network
|
bbk 000000
UDC 628.35:62-278:725.42
Kharkina O. V., Strelkov A. K., Stepanov S. V., Stashok Yu. E., Sven Baumgarten, Josef Sheren
Treatment of Syzran oil refinery industrial wastewater in membrane bioreactor
Summary
The results of investigating biomembrane technology of Syzran oil refinery industrial wastewater treatment are presented. The kinetic parameters of nitrification-denitrification processes are determined. It was demonstrated that biomembrane technology provided for the intensification of these processes alongside with meeting the requirements set to the effluent quality in relation to nitrogen compounds whether with or without addition of biodegradable substrate. The experimental data proved the possibility of either using the effluent for industrial closed-loop water system makeup after partial desalination or (and) discharging it into surface water bodies after polishing with sorption.
Key words
nitrification , oil products , activated sludge , membrane bioreactor , denitrification
|
|
