بررسي نقش قيمت آب در توجيه اقتصادي طرح‌هاي كاهش آب بدون درآمد
Journal Title: آب و فاضلاب - Year 2017, Vol 28, Issue 1
Abstract
Water Pricing as an Economic Justification for Reducing Non-Revenue Water (NRW) Projects Management of water demand and modification of consumption patterns are becoming increasingly essential due to the increasingly limited precipitation and the growing population which have led to both severe restrictions on renewable water resources and increasing demands for water in Iran. The most important consumption management measures involve reducing Non-Revenue Water (NRW) and decreasing water losses in the water supply system. Non-revenue water is defined as the difference between the total inflow and the metered consumption in the supply system. The losses may be divided into the two components of apparent and real losses. Achieving reductions in non-revenue water calls for the careful study and evaluation of the operational procedures proposed in each case since reductions will be economical only when accurate and realistic values are considered in water pricing. The present study draws upon the data obtained from non-revenue water projects implemented in District 4 of Tehran Water and Wastewater Company, the measures proposed by the project consultant, and the economic justifications claimed for all the costs associated with the measures to eliminate water losses. The cost of the proposed measures are calculated for two different economic values of water proposed to ensure benefits, and under four different interest rates. Results confirm the profitability of the non-revenue water solutions based on the finished cost of water even at subsidized rates of public funds. However, project profitability will be in question if the economic price of water is assumed to be equivalent to the total trade price of water and if both real and apparent losses are to be reduced.
Authors and Affiliations
Masoud Tabesh, Soheila Beigi
Keywords
Related Articles
- EP ID EP179070
- DOI 10.22093/wwj.2017.39480
- Views 121
- Downloads 0
سازه‌هاي تئوري رفتار برنامه‌ريزي شده و صرفه‌جويي در مصرف آب Applicability of Theory of Planned Behavior for Predicting Water Conservation Behaviors among College Students
Applicability of Theory of Planned Behavior for Predicting Water Conservation Behaviors among College Students Abstract Noticing drought crisis in Iran and importance of water conservation and recognizing its determin...
بررسي کارايي گياه ساليکورنيا اروپايي در گياه‌پالايي نمک از محلول‌ها Efficiency of Salicornia Europea in Phytoremediation of Salt in Saline Water
Efficiency of Salicornia Europea in Phytoremediation of Salt in Saline Water Abstract Halophytes are plants able to tolerate high salt concentrations. Among the many applications they have found, one is the phytoremedi...
Hybrid Artificial Neural Network-Geostatistics Model for Urban Water Consumption Prediction. A Case Study: Osku City مدل ترکيبي شبکه عصبي مصنوعي- زمين آمار براي پيش‌بيني مصرف آب شهري: مطالعه موردي: شهر اسکو
Abstract The prediction of water consumption in urban basins is of immense importance for the management of water resources, especially in arid and semiarid countries. The lack of strong predictive tools, or perhaps the...
شبيه‌سازی عددی سه بعدی الگوی جريان در حوضچه ترسيب اوليه با استفاده از مدل عددی SSIIM2
3D Numerical Investigation of the Flow Pattern in Settling Basins by SSIIM2 Software Settling basins are considered as a major and important component in conventional water treatment processes. The high cost of construct...
پاتوتايپينگ و بررسي شيوع اشريشياكلي‌هاي بيماري‌زاي روده‌اي در نمونه‌هاي آب ورودي به تصفيه‌خانه‌هاي شهر تهران
Pathotyping of Escherichia coli Isolated from Inlets to Tehran Water Treatment Plants Water borne infections are of great importance for public health due to the role of water in the transmission of pathogens which cause...