Enhancement of Operation Efficiency of Mechanical Treatment Plant of Samara’s Aeration Station

Summary

Problems of the treatment of wastewater of the Samara’s city aeration station connected with ineffective operation of mechanical screens are described. The substantiation of the choice of mechanical screens PC manufactured by PSP Prommashservis Ltd. for the replacement of obsolete equipment and also steel of 12X18H10T grade for manufacture of screens PC is made. The distinctive features of the screens that distinguish them among analogues are presented.

Key words

wastewater , mechanical treatment , electric drive , grate , frequency converter , filter fabric , aeration station , hydro-press

Electric Drives for Valves with Protection against Flooding

SUMMARY

The principally new method of the protection of electric drives for valves against flooding developed by the Scientific Production Association Siberian Machine Builder Ltd. is offered. An electric drive is placed in a hermetic caisson, height of which eliminates the contact of water with the electric drive. If adjustment or setting-up of the electric drive is necessary the caisson is quickly dismantled and after completion of works it is returned to its place. To guarantee long-term operation of the caisson it is made of corrosion-proof steel. The application of this design in sewerage shifts increases many times the reliability of a mechanism of lifting-lowering of a sliding sluice gate and more than twice reduces operation costs.

Key words

sewerage pumping station , valves , electric drive , pipeline flooding , caisson