Sustainable heat and power
The EU, as well as many other countries, have put district heating on the agenda with their climate goals. Proper water treatment is a precondition for optimum return on investment, since correct water quality is essential for optimising the life cycle of pipes, boilers and heat exchangers.
Boilers and turbines for heat and electricity production are highly sensitive to corrosion, deposit and scale caused by dissolved salts and particles in the water. Removing of these elements is essential for operation, service life, and security of supply.
Compact, factory-tested water treatment – ready for operation
Individual units can be frame mounted for a complete and compact solution, ready for use. It also allows for pressure testing, functionality testing and Factory Acceptance Testing (FAT) before delivery.
The solution is complete with all internal piping and wiring factory-built. The whole plant has been performance and pressure tested in our factory. This safety can be achieved with a Grundfos frame-mounted plant or a container-installed plant.
Optimum water treatment for heat & power plants
In this leaflet we put water on the agenda! Learn how to reduce corrosion and wear of boiler by providing optimum make-up water for high-pressure boilers. Water treatment for District Heating is also covered.
Explore related technical references
Chemical-free make-up water solution for power plant
Energie Steiermark Power Plant in Graz has replaced their existing water treatment plant for producing make-up water. One of their main concerns was to avoid the use of chemicals. By using a double pass RO, membrane degasser and EDI from Grundfos, ultrapure water of a very high quality is produced.
Make-up water for heat and power plant
The company Verdo (former Energi Randers Produktion A/S) is situated at the harbour of Randers at the foot of its 127 m chimney. The station produces 223.000 MWh a year. It supplies electricity to 32.000 recipients and district heating to 10.500 customers.
The combined heat and power plant produces electricity and heat energy in joint production. Make-up water for both a high-pressure steam boiler and for distribution of the district heating are needed.
The make-up water for the high-pressure steam boiler is demineralised according to the patented water treatment principle of UPCORE, combining all the known advantages of water demineralisation through ion exchange with the counter-flow principle. After the UPCORE unit, the water is polished in a mixed bed unit, leaving the demineralised water with a final conductivity of under 0.07 μS/cm and a silica content of less that 0.01 mg/litre. The water treatment plant comprising two lines connected in parallel. Each line is dimensioned for a flow rate of 5 m3/h.
The make-up water for the distribution network of the district heating is produced in a RO-PLUS unit. RO-PLUS units are designed for a recovery rate up to 90%, compromising neither the reliability nor the water quality. As pre-treatment of the feed-water to the reverse osmosis unit a softening unit is used. This water treatment plant has a flow rate of 15 m3/h and the conductivity of the demineralised water will be under 10 μS/cm.
Furthermore, the PLC control are integrated into the existing SCADA system of the heat and power plant.
How can we help you?
Whether you’re looking to buy a product or simply seeking advice from a Grundfos expert, we are more than happy to help you get the most out of your water treatment solution! Feel free to get in touch if you need support.