31 October 2023
Non Revenue Water without replacing pipes
The Dutch approach
Drinking water is becoming a scarce commodity all over the world. Climate change is accelerating water scarcity: we are experiencing longer dry periods followed by extremely wet periods. Governments are investing billions of dollars in large water reservoirs, desalination plants and water recycling methods.
What a waste !
The biggest problem is the enormous water leakage in the urban water distribution networks with a worldwide average of 35% leakage with some countries at over 45% leakage. Theoretically a potable water pipeline has a lifetime of 50 years, meaning that 2% of the pipe lines should be replaced every year. With an expanding population this seems very hard to achieve.
Technimex is specialized in offering total solutions to reduce water losses in the water network. If we don’t lose water through leakage we have more water available and consequently need less water from our resources.
Our solution is a total package that will drastically reduce the water losses/leakage in the distribution pipelines.
Before we can start saving water we need to assess where most water is leaking. With the equipment from SebaKMT we can quickly determine where most water is lost.
Smart water management
Once we have established the DMA (district metering area) where most water is lost we can start working on a solution.
We isolate the DMA from the rest of the network and determine the critical point (mostly the point with the highest elevation in the DMA) where a minimum pressure should be maintained at all time.
The pressure control is executed by a needle valve (we suggest starting from DN200) or a hydraulic pressure reducing valve.
The larger the pipe diameter, the higher the pressure, the more water we can save.
1% reduction in water pressure results into 1,2 % less leakage.
The pressure in the network is controlled by special Dutch software. Basically the water demand/consumption regulates the pressure in the network. No demand at night means that we trim down till the lowest pressure, thus reducing water losses.
For more information see: www.non-revenue-water.nl