WAYS TO REDUCE ENVIRONMENTAL DAMAGE IN RURAL AREAS FROM UNRELIABLE PUMPING STATIONS OF SEWAGE SYSTEMS

An important problem with rural drainage is the low capacity and low re-liability of the equipment. High depreciation of fixed assets leads to constant failures, and lack of funds at management companies does not allow timely replacement of equipment. The reliability of the drainage system affects the amount of environmental damage to the atmosphere, water bodies and soil. Pumping pumps are an important element of drainage equipment. Statistics of pump failures in rural areas show that it is necessary to look for low-cost ways to increase reliability of their operation. Functional dependences of ecological damages on the availability factor of technical systems are offered. The equations for calculation of the readiness factor of the electric drive are presented, considering statistics of failures of separate elements of the equipment and functional protective characteristics of devices of protection of electric motors from emergency modes of operation. The offered technique of estimation of the factor of readiness and probable ecological damage gives the chance to reveal directions of improvement of the electric drive of sewerage pump stations. Using the obtained formulas, the environmental damage reduction for the water basin at the electric motor protection device modernization is calculated. It is proved that even the increase of the coefficient of readiness of the electric drive of the pumping pump of the sewage pumping station operating in the territory of the Krasnodar Territory of the Russian Federation by 0.02 gives a significant economic effect - 20000 RUR per year.