An Investigation and Economic Comparison of Methods of Separation of Drinking Water from Non-drinking Water in Yazd (Case Study: Safaeiyeh Yazd)

Subject Areas : Article frome a thesis

farzaneh fotouhi firoozabad ¹ , mohammad reza ekhtesasi ² , mohammad sefid ³ , ali morovati sharifabadi ⁴

1 - yazd university
2 - yazd university
3 - yazd university
4 - yazd university

Received: 2018-02-03 Accepted : 2020-01-26 Published : 2020-02-20

Keywords: Yazd City, Water harvesting stations, Dual water distribution network, Consumption management,

Abstract :

In the current situation, we face the limited quantitative and qualitative water resources. We have no choice except to change the perspective towards consumption management. Separating drinking water from sanitary water is one of the components of the quality management of consumption. Two senarios are water harvesting stations and dual water distribution network.The scenarios of separation of drinking and non-drinking water were analyzed using the EPANET software in Safaieh region. The estimated cost of the pilot region showed that the first method was more costly than the second method. The results of the economic analysis of methods of separation of drinking and non-drinking water using the Net Peresent Value (NPV) showed that all methods have positive NPV index, which indicates that the projects are successful economically. In relation to the comparison of the sales price of drinking water, the first method, ie, plumbing to the home with a price of 4700 toman per cubic meter, is higher NPV and more economical than another method. But since other parameters such as the accessibility of people to the drinking water distribution network, the age of the people, public acceptance is important in selection of the best method of the separation of drinking water from non-drinking water. Dual water distribution network method is suggested. By implementing this project can be managed water consumption through the quota of sanitary water and correcting the price of drinking water.

References:

1)       Abdolmanafi, N. and Mazaheri, M. 2013. Report of dual water distribution networks. Center of Research of Islamic Council Parliament (In Persian).

2)       Fotouhi firoozabad, F. and Ekhtesasi, M. 2016. Necessity and methods of separation of drinking water from other uses in Yazd. First National Conference on Drinking Water Supply and Demand, Health, Challenges and Solutions, Isfahan University. Esfahan. Iran (In Persian).

3)       Fotouhi firoozabad, F., Ekhtesasi, M., Sefid, M. and Morovati Sharifabadi, A. 2018. Strategic management of dual water system (drinking and non- drinking) with SWOT analysis (case study: Yazd city). Ph.D thesis (Watershed Management Sciences and Engineering)., Yazd university, Yazd, Iran, 222pp (In Persian).

4)       Golabchi, M. 2010. Investigation the various systems of water supply and water distribution. Proceedings of. 3th National Conference on Water and Wastewater. Tehran. Iran (In Persian).

5)       Grigg, N., Rogers, P. and Edmiston, S. 2013. Dual Water Systems: Characterization and Performance for Distribution of Reclaimed Water. Water Research Foundation, 282 p.

6)       Lam, Ch., Ling, L., Chen, P., Lee, P. and Hsu, SH. 2017. Eco-efficiency analysis of non-potable water systems in domestic buildings. Applied energy. 202: 293-307.

7)       Llemobade, A.A., Adewumi, J.R. and Zyl, J.E. 2009. Assessment of the feasibility of using a dual water reticulation system in South Africa, Report to the Water Reaearch Commission, 159 p.

8)       Mainali, B., Hao Ngo, H., Guo, W., Nga Pham, T. and Johnston, A. 2011. Feasibility assessment of recycled water use for washing machines in Australia through SWOT analysis. Resources Conservation and Recycling 56: 87–91.

9)       Oskunezhad, M. 2016. Engineering Economy (economic evaluation of industrial projects). Amir Kabir University Publications, Iran (In Persian).

10)   Pahlavani, M., Jalili ghazizadeh, M. and Fazeli. M. 2013. Investigating the hydraulic and qualitative principles of dual water supply networks (case study: Osku city-Azarbayejan Sharghi province). Msc thesis, Water and Power Industry University (Shahid Abbaspour) (In Persian).

11)   Report of Plan of Company Tamadon Karizi. 2017. Performance evaluation of dual water distribution methods in selected cities of Yazd province. Yazd. Iran (In Persian).

12)   Sarbandi farahani, M. 2010. Construction of a separate network of drinking water from sanitary water in Qom. Proceeding of 4th International Conference on Project Management. Tehran. Iran (In Persian).