For the optimisation of the drinking water network in Mombasa, Kenya Datawatt works with Vitens Evides International (VEI) on the supply of a scada project. The mission of VEI is to help developing countries with sustainable improvements in the water distribution.
To realise sustainable projects in developing countries VEI works with local parties. This way the projects continue, even after VEI has completed her part of the mission. Datawatt has previously worked with VEI on the delivery of a scada project. The WOP WASA project in Bangladesh for optimising the drinking water structure in the poor areas of Dhaka, Bangladesh. This project has now been handed over to local parties. On behalf of VEI, Arie Karreman and Bas Swildens have made the first steps for the delivery of a scada system for water company MOWASCO in Mombasa, Kenia. The scada system helps making the drinking water network in Mombasa more transparent and better manageable.
The scada project is part of an overall plan to improve the water supply in Mombasa. The source of the drinking water in Mombasa is the Kilimanjaro mountain. Due to climatic variations, deforestation, irrigation and local industry less and less water from the mountain reaches the city. Also, the increase of the population provides a larger demand for drinking water. The drinking water shortage in Mombasa is largely the result of long and vulnerable supply lines and the lack of storage capacity close to the city.
To improve the water supply, Datawatt delivers the webscada package Stream including the wireless D26 battery data logger. The scada system takes care of monitoring and controlling the water distribution network. The data logger collects all data from the drinking water network and Stream presents all relevant data and takes care of the alarms and follow-up actions. The battery-operated D26 logger can also work on a solar panel, so more places can be monitored. After testing the system in Mombasa Bas Swildens and Arrie Karreman from VEI said: “sending data from the location to Stream scada went smoothly with the Kenyan mobile phone network”.
A clear view on the water distribution network
Logging data in the drinking water network gives a lot of information to MOWASCO. With this information leaks and taps can be traced in the distribution network. The water company can better determine which measurements are necessary to achieve a lower NRW (Non Revenue Water) with the information that is supplied from the scada system. NRW is the amount of water that has been purchased but that does not reach the end user. The lack of a solid infrastructure and process optimization causes often a high NRW in many third world countries.
The Datawatt solution
Bas Swildens: “the Datawatt equipment is easy to install and flexible. In the future equipment can also be placed in various District Metered Areas (DMAs). Because of the easy installation this can be done using the same equipment. In this way, we can give insight in the whole water network step by step, in a low cost way.” The first step is to log the data from the water meters that are already available in the distribution network. The meters are connected to the D26 data loggers and the data will be send real-time to Stream. In the second phase of this project, the water meters are connected to the distribution network at DMA level, so that leakage losses can be calculated.