Aeration tanks in sewage treatment plants
Energy-efficient solutions for aeration tanks in wastewater treatment plants with GEFA DOMINO AT 200R control valves
Discover how the use of DOMINO AT 200R control valves as a replacement for butterfly valves on aeration tanks in wastewater treatment plants not only improves the control characteristics, but also leads to considerable energy cost savings. Here, using the example of a municipal sewage treatment plant, we present the outstanding advantages of our innovative technology.
Area of application:
The challenges in wastewater treatment plants require precise solutions. Our DOMINO control valves are perfect for aeration tanks. One specific example is a municipal wastewater treatment plant with the following parameters:
- Medium: Air at 70°C
- Pre-pressure: 1.65 bar abs.
- Volume flow: 3700 Nm³/h
Task definition:
The previously used manually operated butterfly valves were causing some problems. Our solution was to achieve the following:
- Improvement of the control characteristic
- Automation of the system control
- Reduction in energy consumption through the use of low pressure loss valves
Solution: GEFA-DOMINO control valve DN 250 with optimized special control orifice
The installation of our electrically operated control valves instead of the previous butterfly valves led to considerable improvements. With a pressure loss of only approx. 1.98 mbar when the valve is fully open and maximum flow, the DOMINO control valves offer an energy-efficient solution.
Result: energy cost savings and rapid amortization of conversion costs
The switch to our control valves led to significant savings in energy costs. The amortization of the conversion costs of approx. 50,000€ was already achieved after approx. 1 year of operation after commissioning.
AT 200R control gate valve - Technical details:
- Special control orifice for oxygen input in aeration tanks
- Flanged gate valve for clamping between flanges to EN 1092-1 / PN 10
- Face-to-face dimension according to EN 558-1 series 20 (DIN 3202 K1)
- Housing: GG25 or GGG 40
- Plate: 1.4301 or 1.4571
- Seals: NBR (EPDM, Viton)
- Nominal sizes: DN 50 - DN 1200
