In business talks in late 2018 between the management of NMAqua s.p. Banja Luka and the Institute for Water Management d.o.o. Bijeljina, an agreement in principle was concluded on participation in the realization of the Study "Development of a mathematical model of the water supply and sewerage system of Gradiška with a plan for their development". The main tasks of this project for our team was to perform measurements of flow, pressure, and after the results obtained analysis and in agreement with the Institute to develop a plan of further activities. For each completed task, in principle, a Technical Report on measurements with key observations is made, which will be an integral part of the Main Report upon completion of the Project.
Signing of the agreement
After that, the Contract for measurements on the water supply and sewerage system of Gradiška was signed with a period of seven months until the completion of measurements, testing and preparation of Technical Reports.
At the beginning, initial flow measurements were performed - balancing the quantities at the water source, ie controlling the capacity of well pumps at five wells, as well as the amount of water at the outlet of the water tower. After the obtained results of measurements and analyzes, a plan of further activities was made. It consisted of measuring the flow, ie the input of the amount of water in all formed DMA zones on the Gradiška water supply system.
Measurements of flow, pressure, noise loggers
In addition to measuring the flow, pressures were continuously measured, both in the area of the City and at all pumping stations, and at the same time at the beginning of 2019, measurements were made at the sewer outlet into the Sava River.
After preliminary measurements, field control of the network with forest loggers was performed, as well as day and night surveys of the water supply network. As part of that, a night check of the flow on transport and pipelines was performed, which, based on the measurement results, showed a significant deviation of the flow quantities from the real consumption.
Support
In the research of losses on the water supply network, we wholeheartedly received the support of the management of KP Vodovod Gradiška who spent a good part of their time with us in the field, as well as our main consultants, and were ready to actively participate in the implementation of commitments.
In addition to the results already achieved, which are significant in finding invisible losses, in the coming period until the end of the project we expect to significantly reduce losses in the water supply network in Gradiška.