Water management of a hotel complex with 360 rooms in Khrinnyky, Dubenskyi Distr., Rivne Region with the introduction of modern water saving technologies and the use of BIM-technologies
Students Name: Rosliuk Illia Andriiovych
Qualification Level: magister
Speciality: Hydrotechnical Construction, Water Engineering and Water Technologies
Institute: Institute of Civil Engineering and Building Systems
Mode of Study: full
Academic Year: 2024-2025 н.р.
Language of Defence: англійська
Abstract: The hotel complex with 360 rooms is located in the village of Khrinnyki, Dubensky district, Rivne region. In the master’s qualification work, a complex with 360 rooms was designed with the introduction of modern water-saving technologies and the use of BIM technologies. According to the calculations, the consumption of the hotel complex is Q=675.36 m 3 /day. Five wells located near the territory of this complex provide the necessary water consumption for the needs of the hotel complex. In case of malfunction of the wells, filling of the common tank and the tank with purified water is assumed with imported water. Ecosoft EB-45 ultraviolet disinfectants and metering nodes with a bypass line are installed at the pipeline inlet for each well. According to the characteristics of water and calculations regarding the necessary degree of its purification, the project provides for the installation of Nacationite water softening according to a one-stage scheme. The project envisages a common water storage tank , which is filled from water purification stations from wells. From the tank, water is supplied to consumers by a pumping unit. Also, this pumping unit ensures filling of the water supply tank for shelter needs. A tank of raw sewage is designed in the work. This reservoir is filled from the drains of wash basins and showers in hotel rooms. Having previously undergone biological treatment, the effluents are pumped through treatment stations into a tank of purified water. From the tank of purified water, the water is supplied to the needs of the toilets in the hotel rooms through the water measuring unit by the pressure boosting station. in the building of the pumping station , which is filled from water purification stations. Connection of fire engines is provided for the fire extinguishing network. The project also provides for a reservoir for irrigation needs. This reservoir is filled from a system of internal drains and water purification stations from wells. Next, the water is supplied to the irrigation faucets for irrigation of green spaces and improved coatings. A non-return valve is installed on the inlet pipeline in front of each tank to block the flow of water in the reverse direction and a tap with an electric drive to shut off the water supply. In case of overflow of any of the tanks, excess water enters the sump, where the Wilo Drain TMW 32/11 pumps are located, which drain the water from the sump into the sewage well of the production sewer. Production wastewater from the parking lot, drains and overflows from reservoirs and tanks are directed to the oil trap. Waste water from the kitchens of public catering establishments is transported to a grease trap, after which it is sent to the household network. Further, all wastewater enters the general sewage network in the village. Hrinniki Goal of research – is to analyze the methods of treatment and use of gray water. Study object – is gray water. Scope of research – is gray water treatment methods. The paper examines the physical, chemical, and biological properties of greywater, as well as analyzes its treatment methods, such as mechanical filtration, biological treatment, and chemical methods (for example, chlorination). In addition, the work highlights the international experience of gray water management, emphasizing its potential in regions with a shortage of water resources. Gray water is a category of wastewater produced by household processes such as washing dishes, laundry or showering. It is usually characterized by the absence of fecal contamination, which is its main difference from the so-called "black water", which contains toilet waste [1]. The chemical composition of gray water can include residues of detergents, food particles, organic substances, fats, oils, as well as microorganisms that enter the water from the surfaces of the human body or household objects. Gray water includes detergent residues, grease, organic impurities and microorganisms. Their chemical properties are determined by the presence of organic and inorganic impurities that enter the water during household processes [2]. Physical properties of gray water - temperature, turbidity, smell, color - determine water quality and affect the choice of cleaning method [3]. The work highlights several main methods of gray water treatment: Mechanical filtration: using filters to remove large particles. Biological purification: the use of microorganisms for the decomposition of organic pollutants. Physico-chemical purification: removal of impurities from water by means of physical and chemical reactions. Chemical cleaning: neutralization of harmful substances using chemical reagents. Natural purification methods: methods mimic the natural processes of water filtration and self-purification. Gray water reuse is an environmentally and economically beneficial approach to reducing fresh water consumption and reducing the load on sewage systems [4]. Gray water can be purified and used in various areas: Irrigation of homesteads and landscaping Benefits include conserving fresh water and increasing soil fertility, although salt build-up should be avoided. Flushed the toilet For this purpose, mechanical, biological filters and UV disinfection are used to ensure safety. This significantly reduces drinking water consumption. Industrial and domestic use Gray water is purified using membrane filtration or adsorption technologies, which allows it to be used for car washing, cleaning or other technical purposes. Agricultural use Anaerobic and aerobic treatment systems make water suitable for irrigating fields, ensuring sustainable crops, even in arid regions. Cooling systems of industrial facilities Biological treatment and clarification of water reduce energy consumption and the need for fresh water, which is relevant for regions with water shortages. The use of gray water is a promising strategy in the conditions of growing water scarcity and the need for sustainable management of water resources. With a proper approach to the planning and installation of the treatment system, it allows not only to preserve a valuable natural resource, but also to reduce financial costs for water supply and drainage [5]. This is especially relevant for regions with limited access to fresh water and the high cost of its supply. Keywords - gray water, waste water, cleaning methods, properties, filtration. References [1] H. Sharma and R.C.Chhipa, “An opportunity for water conservation: A Grey water (cloth washings) and its application”, International Journal of Research Aspects of Engineering and Management ISSN: 2348-6627, 1(2), pp. 91-94 (June 2014). [2] S. A. Manjare, S. A. Vhanalakar and D. V. Muley, “Analysis of water quality using Physico-chemical parameters Tamdalge tank in Kolhapur District, Maharashtra”, International Journal of Advanced Biotechnology and Research ISSN 0976-2612, 1(2),115-119 (2010). [3] P. N. Patil, D. V. Sawant, R. N. Deshmukh, “Physico-chemical parameters for testing of water- A review” International Journal of Environmental Science 3 (3), (2012). [4] J. K. Varghese, “Effects of the implementation of grey water reuse systems on construction cost and project schedule”, Thesis, Office of Graduate Studies of Texas A&M University, (Aug 2007). [5] U. S. Environmental Protection Agency, “Guidelines for Water Reuse” USEPA, 19-26 (2003).