Water

Technimex International is working on water every day and in all its forms. With smart automation we contribute to:

  • Waste water & drinking water plants
  • Realtime controlled sewage water grids
  • Drinking water grid monitoring
  • Weather systems
  • Surface water monitoring & alerting levels and water quality
  • Groundwater monitoring

Please contact us for more information.

Cases

The sewage water balance

Storing all level measurements of a complete sewage piping system, including rainfall in the affected area, opens new perspectives for smart reporting and finding technical shortages.

Problem
How to detect measurement errors, unknown outside influences, abnormal discharge surface, leaking sewers, unknown discharges, etc. in a sewer system.

Solution
A smart water balance report can help you out. It compares the amount of sewage water in a sewage piping system at the beginning of a period with the amount of water at the end of the period. The amount of water in the system can be calculated in TeleControlNet from the level measurements in the system, and the following should apply: Water in the system at t2 is equal to t1 + water in system on total influx between t1 and t2 – total effluent between t1 and t2.
In practice, this water balance usually does not match. But just the difference found is interesting because it may indicate one of the problems mentioned above.

Rule based control of groundwater pumps

In the Ruhrgebiet in Germany groundwater levels are rising because of the cessation of mining.

Problem
Because of the rising groundwater levels, basements in homes get flooded. Unfortunately regulating ground water levels by regional pumping stations is expensive and energy consuming.

Solution
Technimex International has developed an analogue pumping control strategy with a minimum of power consumption. A monitoring network of groundwater is also connected to TeleControlNet. On basis of measured ground water levels ground water pumps that are spread over the problem area, are rule based controlled.

Rule based control of sewage pumping stations

Certain urban areas have a very dense population. Installing new sewage piping and pumping stations is very costly.

Problem
Can the utilization of the installed sewage piping be improved?

Solution
In several cases we have improved the buffer capacity in the piping system with central rule based control of pumps. For example if heavy rainfall is expected, the sewage piping system is emptied before the rain has arrived. The automated pump control is based upon a central rule based automated pumping strategy. The rules are defined in TeleControlNet by sewage experts.

Flood warning during construction

Construction work to sewage systems in dense urban areas is complicated.

Problem
During a renovation work in Dortmund there was a risk of larger amounts of water from the further on upstream drains entering the location where the maintenance operations took place. A temporary bypass was far too costly.

Solution
In order to prevent risks to persons working in the drains, sensors have been placed in the upstream drains. TeleControlNet alarmed the maintenance workers for upcoming water. The data transfer was performed by GPRS with a live heartbeat to secure the connection.

Flood warning

The city of Eindhoven has the risk of flooded tunnels in case of heavy rainfall.

Problem
In case of heavy rainfall the security in the city can be at stake because, in addition to ordinary traffic, police cars, ambulances and fire trucks cannot pass through the flooded tunnels anymore.

Solution
TeleControlNet monitors water levels in the pumping station in the tunnels and shows the situation real time, including alarming in TeleControlNet.

LoRa pilot for a rule based irrigation concept

Triggers for starting the irrigation water supply are usually given by soil moisture sensors. For a good irrigation result it is necessary to measure the moisture in the soil at different places in the fields.

Problem
To gather data from the sensors for start and stop commands for the irrigations system, they must be able to communicate via gateways, with the central TeleControlNet server. The sensors must be battery powered and communicate over considerable distance.

Solution
By applying sensors with LoRa radios of Technimex International, communication over long distances (>3 km) to TC302 LoRa gateways is possible. Because the power requirements for the radio and the sensor is low, batteries will usually hold for more than one year. The sensors with integral radio can be very compact and (re)potted in the fields. In this case, the irrigation control is also rule based. Also the water quality is measured and helps to determine whether or not, to start the irrigation system.

Data pattern recognition

If sewage systems are overloaded, sewage water can overflow to surface water. Authorities want to know when this happens and how much sewage water is dumped. If the water level rises above overflow level, TeleControlNet starts to calculate the overflow volume on bases of the measured sewage water level. The calculation starts at the overflow level that is usually indicated by a float switch. The problem is that the float switch is often polluted and for that reason stuck, so it does not signal an overflow situation.
The float switch becomes redundant by analysing the measured data pattern of the sewage water level trends. With advanced data processing TeleControlNet detects a kink in the trend at the overflow level and signals overflow by software signal.

Calculation of process values

By using the sophisticated measured data in TeleControlNet, flow meters in pumping stations can be replaced by calculations. By combining the measured data with meta data of the pumping chambers it is possible to calculate the flow.

Central control of wastewater plants

The Netherlands counts many wastewater plants.

Problem
Controlling these wastewater plants costs a considerable amount of money. Costs can be reduced if multiple wastewater plants can be controlled from one central control room. The problem is that these plants are often realized in the course of time, with different brands PLC control.

Solution
With our TeleControllers we connect cross-systems to one central (remote) TeleControlNet SCADA control interface.

Saving energy in sewer pumping systems

It’s pretty simple to save on energy consumption in waste water pumping stations. By applying frequency converters pumps are driven at full speed at start and stop in order to flush the sewer pipes. During normal operation pumps can be controlled at 60%.

The energy savings can be as high as 30%.

More energy savings are possible by collecting additional measurement data from the sewer system and convert this into smart central pump control. Ask us for practical examples.