Energy recovery in surplus water supply network potential and solutions in urban Vietnam

Abstract

ABSTRACT

Along with the continuous and sanitation of water supply, a sustainable water supply system also requires improving energy efficiency, reducing carbon emissions, reducing water leakage, reducing energy losses in the water distribution network. A water supply network is called economically and technically effective when the pressure is moderated at a similar level and is within a certain limit for all consumption areas to reduce water leakage, reducing the risk of pipe rupture and conditioning consumption. Solutions for designing and operating water supply systems are popularly applied today such as network separation partitions, pump inverters ... have been effective, but the pressure in pressure-advantaged areas such as the network head or low-terrain areas is often very large compared to the required level. To eliminate these excess energy, currently mainly using valve equipment or pressure reducing works, however, this solution wastes an existing energy source located right
in the heart of urban areas. The paper argues for the potential for recovery and reuse of excess energy in the water distribution network in Vietnam urban areas.

Key words: Water distribution network, recovery, energy.