Analysis of water losses in Vilnius water Supply network

Abstract

Water losses in Vilnius water supply system was analysed. Information on the performance of Vilnius water supply network and its operation and maintenance parameters was collected. Numbers of water supply network parameters were collected and summarized in the article. A short overview of the historic development and present situation of Vilnius water supply network are presented. Water losses indicators were adjusted to local conditions. The volumes of water losses were divided into two types of losses: real and apparent losses. Real water losses were subdivided into ten items, and apparent losses – into five items. Each item was investigated separately, and qualitative and quantitative results for each item are presented. The results of the total balance of water losses are also presented. Based on the analysis of the present situation, possible measures such as technical, financial and educational methods for reducing water losses in the distribution system are presented.

Straipsnyje analizuotos vandens netekties Vilniaus vandentiekyje priežastys. Darbo metu buvo surinkti ir išanalizuoti vandentiekio tinklo darbiniai parametrai. Pateikiama trumpa miesto vandentiekio plėtros istorija, analizuojama esama būklė. Atsižvelgiant į priežastis, dėl kurių atsirado tiekto ir sunaudoto vandens kiekių skirtumas, vandens netektis tiekimo sistemoje skirstoma į tariamąją ir tikrąją. Tariamoji netektis santykinai buvo suskirstyta į dešimt, o tikroji netektis - į penkias sudeda¬mąsias dalis. Kiekviena vandens netekties priežastis analizuota atskirai. Nustatytos kiekybinės ir kokybinės kiekvienos vandens netekties sudedamosios dalies charakteristikos. Pateikti vandens netekties mažinimo metodai, techniniai, finansiniai ir auklėjamieji aspektai.