Smart water pressure and quantity management plan for carbon neutrality in local water supply facilities

Abstract

Recently, it has set goals to reduce greenhouse gases worldwide to prevent climate change caused by abnormal temperature phenomena. And each country is implementing various policies to reduce carbon. The Ministry of Environment, which oversees Korea's water management policy, announced in its 2021 work plan that it will push for a "carbon neutral promotion in the water management sector" policy as one of the six major policies to promote water management. In particular, water supply facilities are one of the facilities that use a lot of energy in the water intake, water purification, and water transmission processes, and carbon emissions from local waterworks are much higher than wide-area water supply. Accordingly, this study reviewed ways to reduce the amount of leakage that can fundamentally reduce production to reduce energy use and ways to produce eco-friendly energy using the energy of water. Leakage reduction was derived using a smart meter installed at the consumer and a small flow rate and water pressure monitoring system installed at the inlet point of the small area. In addition, by finding the point where unnecessary chickenpox is generated in the pipeline flowing into the local water supply reservoir in Boryeong Metropolitan Water Supply, a plan to introduce small hydroelectric power using falling water was reviewed and power generation was calculated. In addition, we looked for areas where decompression valves were installed due to excessive pressure at the inflow point of the block unit of the local waterworks. Among them, the amount of eco-friendly energy that can be produced was calculated by calculating the amount of power generation for decompression valves of a certain size or more. Although it is the amount of leakage and small hydropower generation in some regions, if this concept is advanced and applied to workplaces across the country, carbon neutrality of domestic local waterworks is not expected to be difficult. In addition, active control of small pressurization plants that use a lot of energy in local waterworks and establishing a system to reduce water use at each consumer can be an efficient carbon reduction method, so it was suggested as a future task.