Water and Wastewater Use Cases
Explore use cases tailored for the Water and Wastewater industry
24 use cases
Drinking Water Supply
Bank filtration
Water and Wastewater
Water obtained from wells adjacent to lakes and rivers is called bank filtration. The flowing water constantly seeps through the riverbed and mixes with the ground water. The level of water must be constantly monitored for an optimum extraction of water. The pump pressure is also monitored in the delivery line.
Chemical tank
Water and Wastewater
Chemical tanks guarantee the supply of raw materials for ongoing processes. The plant operator needs exact level readings from the containers at all times to be able to ensure punctual replenishment. An additional level switch protects against overfilling.
Deep well
Water and Wastewater
Ground water from deep wells is pumped to the surface with the help of submersible pumps. It must be ensured, however, that the amount of water extracted is balanced to the amount that seeps back in. Reliable, maintenance-free level measurement is necessary for smooth operation of the well.
Drinking water pipeline
Water and Wastewater
To transport drinking water even to the remotest drinking water storage facilities, pumping stations generate the required water pressure, which is constantly monitored by a pressure transmitter. A level switch serves as dry run protection for the pumps.
Elevated storage tanks
Water and Wastewater
Elevated water tanks are reservoirs located at high places that act as a buffer during periods of peak demand. They compensate for delivery fluctuations and enable efficient plant operation. Reliable level measurement is therefore indispensable.
Evaporation chamber
Water and Wastewater
In thermal seawater desalination, the drinking water is produced in multi-stage evaporation processes. By connecting the various stages in series with ever lower temperatures, the system’s coefficient of performance is significantly increased and its overall efficiency enhanced. Reliable monitoring of the pressures and levels in the various stages is an important prerequisite for optimal operation of the plant.
Filter monitoring
Water and Wastewater
The raw water is pumped from the lake into a tank. It is then filtered via a drum filter. In this process the water is separated and purified from any suspended matter and coarse impurities. An electronic differential pressure measuring instrument monitors the level of contamination of the filter. Cleaning of the filter is automatically triggered as soon as the threshold contamination is exceeded.
Flotation
Water and Wastewater
To filter suspended matter out of the water, precipitants are added to the water. When small air bubbles are injected into the liquid, suspended matter is bound to the rising bubbles and drawn off at the water surface. In order to achieve the best possible bubble formation, the pressure in the air supply is regulated to stay within narrow limits. Reliable and accurate level measurement is necessary to achieve efficient removal of the suspended matter.
Gauging station
Water and Wastewater
Precise monitoring of the river level is an important requirement for sustainable extraction of river water for use as drinking water. The measurement sites are often in exposed locations and sensors are subjected to all weathers and surface conditions.
Gravel bed filter
Water and Wastewater
The suspended matter is filtered out of the water via the sand and gravel filled filter tank. Pressure is applied to pump water through the filter bed. Dirt particles are retained in the filter material. The electronic differential pressure measurement monitors the level of contamination in the filter. As soon as the threshold contamination is exceeded, an automatic cleaning cycle of the filter is triggered.
Intermediate bulk containers
Water and Wastewater
In many processes, small amounts of various additives are required to improve the properties of certain end products. The media are supplied in small, transportable containers. Level measurement ensures the supply for the ongoing processes.
Mineralisation tank
Water and Wastewater
Various methods are used to replenish the demineralised water with the minerals required in healthy drinking water. One method is to pass the water through a container filled with limestone, enriching it with mineral substances. The filling of the container is monitored with the help of a point level switch.
Osmosis filter
Water and Wastewater
Sea water is pressed through a semi-permeable membrane under high pressure. The semi-permeable membrane allows only water molecules to seep through. Salts, bacteria and viruses are retained in the filter. The finished product is almost the same as distilled water. A differential pressure measurement is needed to monitor the level of contamination across the filter.
Ozone gas collection pipe
Water and Wastewater
Ozone is used for the disinfection of drinking water. It is produced from oxygen in a hyperbaric reactor by means of electrical energy. The gas produced then flows into the ozone gas collection pipe. Reliable pressure measurement is mandatory in order to keep the pressure in the pipeline constant and monitor the process integrity.
Pure water tank
Water and Wastewater
Pure water tanks are important storage facilities for periods of peak demand. They compensate for delivery fluctuations and enable efficient plant operation. The pure water tank is therefore not only a means of storage, it also serves as an equalizing tank. Reliable level measurement is therefore essential.
Reverse osmosis
Water and Wastewater
The seawater is forced through a semi-permeable diaphragm under high pressure. Only pure water molecules can pass through. Salts, bacteria and viruses are retained in the filter. The resulting water is almost like distilled water. Differential pressure measurement monitors the level of contamination of the filter.
Seawater extraction
Water and Wastewater
The seawater is fed into large buffer basins for further processing, sometimes these can be several hundred metres from the coast. Level measurement in the basins controls the extraction pumps and thus enables reliable operation of the plant.
Storage tank for flocculant
Water and Wastewater
The finest impurities in the water are bound together through flocculation. This allows the coagulated materials to be removed from the water by sedimentation or filtration. The flocculant required for such operation is stored in a reserve tank. A continuous level measurement ensures a sufficient supply of flocculants. The point level detection serves as overflow protection in the tank.
Surge tank
Water and Wastewater
In the central drinking water supply system, air-bladder chambers are used to compensate for pressure fluctuations in the supply line. They are used primarily to stabilize smaller water networks, where, for economic reasons, a water tower is not an option. A pressure transmitter is deployed to monitor the tank and control the pumps. A low level switch detects the minimum water level in the tank and thus prevents air from entering the water supply network.
Ultrafiltration
Water and Wastewater
During seawater desalination, substances often have to be removed or separated from each other. One method for separation or precipitation is filtration. Superior product quality results only when the filter functions properly. For that reason it must be ensured at all times that the filter is performing adequately. This requires continuous monitoring of the filter.
Water source
Water and Wastewater
Spring water originates from surface water, which passes down through layers of porous rock on its way down into the earth. It then flows horizontally along a layer of clay or rock and thus forms a spring. To obtain drinking water, the spring is impounded in some type of structure and protected against contamination. The spring water flows into a settling pond and then into a reservoir. A reliable level measurement is critical in ensuring a sufficient supply of drinking water.
Water storage tanks
Water and Wastewater
Water storage tanks are especially important in times of peak demand. They compensate for delivery fluctuations and enable efficient plant operation. The water storage tanks are therefore not just storage tanks, they also serve as equalising tanks. Reliable level and point level measurement are thus indispensable here.
Water supply dam
Water and Wastewater
To operate drinking water storage reliably, precise information about the water level of the inflow as well as the dam itself is required. The level of water in the dam can be continuously monitored by a hydrostatic level measurement. Since infrastructure at these remote sites at the dam wall, is often lacking, wireless mobile data transmission units are often used for sending the measured values.
Water tower
Water and Wastewater
Water towers are used as storage facilities for drinking water and as pressure balancing tanks in the network of water supply pipelines. In order to keep the water level and thus the network pressure constant, the level in the water tower needs to be constantly maintained. The level of water is monitored by a pressure transmitter.
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