IMPROVEMENT OF THE MAIN WATER NETWORK FOR MIDDLE CITY

In systems of centralized water supply, the givining-distribution complex (GDC) has highest cost, including pumping stations, pipes and supply networks: main, street, intra-quarter. The economic efficiency operation this directly depends on technical condition facilities equipment. But over time, characteristics both units pipelines deteriorate due to wear. Therefore, it is necessary periodically check their characteristics, as well evaluate topological network in process its development. This requires regulatory documents research by specialists field sciences. paper presents an example such approach for system medium-sized city Borispol (65 thousand inhabitants) Kiev region. To set throughput main network, hydraulic calculations were performed a computer using HIDRO program. It been established that sufficient capacity, evidenced constructed piezometric maps. structure imperfect. improve structure, proposed loop introducing additional section. section introduced parallel two existing dead-ends. improvement made possible reduce pressure at stations 2.4 m obtain annual energy saving 19.57 kWh. Due commissioning section, new ring was formed reliability number consumers increased more than 5.6 times. indicated increase fact with 2 dead-end sections.