In Aggersund, Denmark, the native municipality decided it was time to update their forty 12 months outdated vacuum sewer system. Following investigation of brand-new and alternative methods, they chose to interchange the small well pits with Grundfos PUST prefabricated pumping stations totally built-in with monitoring and management using Grundfos Devoted Controls.
The vacuum based mostly system contained greater than 60 small pits, each amassing wastewater from three to 4 houses. The decision to install such a system in the 1970’s rested largely on the issues specific to wastewater assortment in Aggersund – a excessive water table and risk of flooding. Maintenance had turn out to be timeconsuming, expensive, and working conditions typically difficult.
As Operations Manager Lars Peter Jensen of the Løgstør Wastewater Treatment Plant explains, “Contemplating the social, environmental and price issues, it was clear to us that the time was proper to contemplate alternate options”.
In the direction of a contemporary wastewater system
At first, the town’s engineers leaned in the direction of a conventional gravity-based mostly system, and also thought of pressurised systems. Nevertheless, a visit to a neighbouring municipality to see a project involving quite a lot of pumping stations with a completely brand-new type of management system satisfied them of another possibility.
The Grundfos PUST prefabricated pumping station means the municipality could install a sturdy polyethylene pumping station with pumps, pipes and accessories delivered on web site and lowered onto a concrete basis, in lower than a day.
“Pumping stations that arrive on a lorry, able to be off-loaded and installed, together with the superstructure, concrete foundation and all different necessary tools couldn’t be easier for us, and is the perfect answer for a town like ours, with a excessive water table,” says Lars Peter Jensen.
The addition of Grundfos Dedicated Controls ensures full monitoring and control of all pumping stations, and in this case with an vital just-out addition to Dedicated Controls that basically captured the imagination.
Brand-new management system ensures integration
The management system which generated explicit curiosity in was the GPRS online system, which connects the person items via a central SCADA system. The system additionally monitors alarms from the Grundfos IO111 sensor and MP204 motor safety unit, which permits the end user to immediately monitor the pump performance and protects them from damage.
Having the sort of system can significantly reduce the entire cost of a system by offering real time suggestions, permitting for fast selections to be made regarding preventative maintenance. In particular, the installation wizard and person interaction ensure consumer satisfaction.
”The system is very consumer friendly and simple to navigate, which implies it is straightforward for the operators to make use of the entire functions. The person interface is fantastic and is as easy to make use of and intuitive as using a mobile phone,” explains Lars Peter Jensen. “I can’t consider a single scenario regarding the every day operation of the pumping stations that the control system hasn’t had covered.”
One of the first turnkey installations from Grundfos
Primarily based on the data from the consulting engineer, Grundfos calculated the pressurised pipes, pumps, and pit sizes for a total of 9 pumping stations. The two larger pumping stations had been every equipped with Grundfos SEV 80 6 kW pumps and the smaller seven pumping stations have SEG grinder pumps.
Aggersund is among the first prospects to obtain a complete turnkey solution from Grundfos. This was a standard system that included prefabricated tanks, pumps, valves, pipes, and spares, to which was extra Devoted Controls, GPRS communication and breaker panels. Flexibility is constructed into these standard systems, allowing Grundfos to adapt a system for particular requirements.
Contemplating the flood risk in the municipality’s coastal cities, Grundfos was capable of supply a wastewater system that met the requirements for a posh mission, to the satisfaction of the municipality.
“We have invested several million Euros in this venture, so we had to be completely certain that we used a contributor whom we may trust. We already knew Grundfos from an area flood safety undertaking, and we are very satisfied with the pumping stations that at the moment are installed,” concludes Lars Peter Jensen.