Session

Civil Engineering, Infrastructure and Environment

Description

Kosovo is estimated to have limited surface and subsurface water resources and is classified as such in a group of water stress states. To meet the shortages of these resources but also for environmental and economic reasons, water reuse is now considered as a good opportunity to meet the shortages. Reuse is defined as the reuse of water used by objects, water that can be collected from roofs, other surface and groundwater in and around objects. This paper deals with Object IV on the UBT Campus in Lipjan and analyzes the feasibility of meeting the water requirement from the facility's reuse of water and the use of rainwater from the roof along with the facility's drainage water. To determine these quantities and the manner of use, Object IV designed the supply and disposal system for the water to be used for drinking, the removal of wastewater, gray water, the collection of rainwater from the roof and drainage water from the object. The IV object of the UBT campus in Lipjan is designed for a 5257 m2 of basement and roof area. The water coming out of the sinks that will be used for reuse will be designed separately from the sewage. Also, a reuse system for laundering toilets was set up separately from other sanitary supplies. Drinking water requirements for Object IV are estimated at 4.8 l / s while the discharged water used may range from 30-60 l / s. Rainfall calculation for a 50 year iteration with duration of 3 minutes maximum will be 4 mm which implies that the maximum amount of conveyance of the roof rating par 5257 m2 is 116.8l/s, while the load for a vertical is 4.8 l/s. The maximum groundwater flow from drainage into and around the object provides an estimated 7.5 l/s. From the analysis of the results of water quantities, thay are calculated the volumes that can be reused by gray, rainwater and groundwater: From the reuse of gray water generated by the sinks of the facility it is possible to provide about 27 m3 per day of service to be used for washing in the toilet. From rainwater that can be reused and from groundwater these volumes are 1260 and 54 m3 respectively. This volume will provide services for the desired greenfield conservation plot of approximately 1 ha and a valuable reserve for emergencies such as fire. The results of the paper indicate that it is possible to obtain a valuable amount of water from reuse of waste water, rainwater utilization and drainage that will meet the severe shortage of water. Also, potential water use has a positive environmental impact and reduces the economic cost of water use. This paper suggests authorities dealing with the definition of construction criteria in Kosovo to look at the possibility of applying again the criteria for water reuse, especially urban areas in buildings with large surfaces.

Keywords:

water demand, gray water, rain water, drainage waters, reuse.

Session Chair

Driton Kryeziu

Session Co-Chair

Blertë Retkoceri

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-437-96-7

First Page

27

Last Page

40

Location

Lipjan, Kosovo

Start Date

31-10-2020 1:30 PM

End Date

31-10-2020 3:00 PM

DOI

10.33107/ubt-ic.2020.56

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Oct 31st, 1:30 PM Oct 31st, 3:00 PM

Water reuse in collective and business buildings

Lipjan, Kosovo

Kosovo is estimated to have limited surface and subsurface water resources and is classified as such in a group of water stress states. To meet the shortages of these resources but also for environmental and economic reasons, water reuse is now considered as a good opportunity to meet the shortages. Reuse is defined as the reuse of water used by objects, water that can be collected from roofs, other surface and groundwater in and around objects. This paper deals with Object IV on the UBT Campus in Lipjan and analyzes the feasibility of meeting the water requirement from the facility's reuse of water and the use of rainwater from the roof along with the facility's drainage water. To determine these quantities and the manner of use, Object IV designed the supply and disposal system for the water to be used for drinking, the removal of wastewater, gray water, the collection of rainwater from the roof and drainage water from the object. The IV object of the UBT campus in Lipjan is designed for a 5257 m2 of basement and roof area. The water coming out of the sinks that will be used for reuse will be designed separately from the sewage. Also, a reuse system for laundering toilets was set up separately from other sanitary supplies. Drinking water requirements for Object IV are estimated at 4.8 l / s while the discharged water used may range from 30-60 l / s. Rainfall calculation for a 50 year iteration with duration of 3 minutes maximum will be 4 mm which implies that the maximum amount of conveyance of the roof rating par 5257 m2 is 116.8l/s, while the load for a vertical is 4.8 l/s. The maximum groundwater flow from drainage into and around the object provides an estimated 7.5 l/s. From the analysis of the results of water quantities, thay are calculated the volumes that can be reused by gray, rainwater and groundwater: From the reuse of gray water generated by the sinks of the facility it is possible to provide about 27 m3 per day of service to be used for washing in the toilet. From rainwater that can be reused and from groundwater these volumes are 1260 and 54 m3 respectively. This volume will provide services for the desired greenfield conservation plot of approximately 1 ha and a valuable reserve for emergencies such as fire. The results of the paper indicate that it is possible to obtain a valuable amount of water from reuse of waste water, rainwater utilization and drainage that will meet the severe shortage of water. Also, potential water use has a positive environmental impact and reduces the economic cost of water use. This paper suggests authorities dealing with the definition of construction criteria in Kosovo to look at the possibility of applying again the criteria for water reuse, especially urban areas in buildings with large surfaces.