Reconstruction of the water supply system in Kholmy (2500 inhabitants), Koriukivskyi Distr., Chernihiv Region
Students Name: Melenchuk Andrii Oleksandrovych
Qualification Level: magister
Speciality: Water Supply and Sewerage System
Institute: Institute of Civil Engineering and Building Systems
Mode of Study: full
Academic Year: 2024-2025 н.р.
Language of Defence: ukrainian
Abstract: Based on the analysis of the water supply system in the village of Kholmy, Koriukivka District, Chernihiv Region, a combined domestic-drinking, industrial, and firefighting ring water supply system has been designed. The system consists of three rings, with the main pipeline network including a water tower at its endpoint. The water supply network was calculated for maximum design flow rates, with network balancing performed for three scenarios: peak water consumption, maximum transit, and a fire event during peak consumption. Pipe diameters were determined based on maximum flow rates and economic velocity. The design flow rate was calculated according to the specific water consumption standards outlined in DBN V.2.5-74:2013, Water Supply. External Networks and Facilities. Key Design Provisions. The water source for the village of Kholmy is underground water, chosen as the most reliable option in terms of economic feasibility and safety. The location of the water intake boreholes was determined based on hydrogeological studies. The project includes one operational and one backup well, equipped with Calpeda pumps. Chemical analysis indicated that the water requires de-ironing. The project includes the construction of a water treatment station. For de-ironing, pressure filters are installed, and to ensure bacteriological safety, mercury-quartz bactericidal lamps are used. The system includes one operational lamp and one backup lamp with a bactericidal output of 35 W. Purified and disinfected water is stored in rectangular reinforced concrete reservoirs for clean water, where it is accumulated and preserved. It is then pumped into the village water supply network by a second-stage pumping station, which includes five pumps: three NM4 65/31 pumps (two operational and one backup for domestic and municipal needs) and two NM4 100/250 firefighting pumps (one operational and one backup). The study includes a literature review of global practices in stormwater management. Three methods are described in detail: hydrograph peak shaving, “gray” infrastructure management, and “green” infrastructure management. Conclusions are drawn regarding the advantages and disadvantages of these methods. As part of the assignment from the Department of Business Economics and Investment, localized cost estimates for the general construction work on the village’s external water supply network were prepared. Study object is the water supply system of Kholmy. Scope of research is the reliable operation of the combined economic-drinking industrial-fire-fighting ring water supply system of Kholmy. Goal of research: To design a combined domestic-drinking, industrial, and firefighting ring water supply system for the village of Kholmy, including an underground water intake, a drinking water treatment station, and external networks. Additionally, to conduct a literature review of global practices in stormwater management.. Research Results: A combined domestic-drinking, industrial, and firefighting ring water supply system for the city of Kholmy has been designed. Analysis of drinking water consumption has been conducted. An underground water intake system has been designed. A drinking water treatment station has been proposed. A literature review of global practices in stormwater management. Keywords: water supply system, water consumption, water supply sources, pump, stormwater runoff, hydrograph. References. 1. DBN V.2.5-74:2013 Vodopostachannya. Zovnishni merezhi ta sporudy. Osnovni polozhennya proektuvannya. 2. Zapol’skiy A.K. Vodopostachannya, vodovidvedennya ta yakist vody. – K.: Vyshcha shkola, 2005. 3. Kravchenko V.S. Vodopostachannya ta kanalizatsiya / V.S. Kravchenko. – K.: Kondor, 2003. – 288 s. 4. Romanenko V.D. Osnovy hidroekolohiyi: pidruchnyk. – Kyyiv: Oberehy, 2001. – 728 s. 5. Coker, M. E., Bond, N. R., Chee, Y. E., & Walsh, C. J. (2018). Alternatives to biodiversity offsets for mitigating the effects of urbanization on stream ecosystems. Conservation Biology, 32(4), 789–797 6. Region, Toronto, and conservation authority. "Stormwater management and watercourse impacts: the need for a water balance approach." (2006). 7. Bradford, A., & Gharabaghi, B. (2004). Evolution of Ontario’s Stormwater Management Planning and Design Guidance. Water Quality Research Journal of Canada, 39(4), 343–355. 8. Changnon, S. A., & Demissie, M. (1996). Detection of changes in streamflow and floods resulting from climate fluctuations and land use-drainage changes. Climatic Change, 32(4), 411–421.