It is encouraging to note the decision makers in various municipalities are keen to reduce the operational expenditure by bringing new technologies and capital expenditure to invest,” describes Balaji Ganesh, Head – Wastewater, Grundfos Pumps India
Grundfos S-tube impeller, which comes with a breakthrough technology in the wastewater segment, sets new standards for wastewater pump systems and solutions. Balaji Ganesh shares how Grundfos makes it possible to offer greater hydraulic efficiency than any other type of wastewater impeller with its S-tube impeller.
Breakthrough S-tube impeller Innovation is the heart of every Grundfos product. Its research and development centre in Denmark is the largest in the pump industry worldwide. Its production technology, designs and materials are constantly examined and improved.
One of the recent innovative products from Grundfos is the S-tube impeller. This product comes with a breakthrough technology in the wastewater segment, thereby raising the bar and setting new standards for wastewater pump systems and solutions.Its innovation of the S-tube impeller sets new standards for wastewater hydraulic design, offering greater hydraulic efficiency than any other type of wastewater impeller without compromising free passage.
All-in-one solutionTraditionally, wastewater pump owners have faced a trade-off between larger free passage and high hydraulic efficiency. Several attempts have been made to increase the reliability level of wastewater pumps.
Various kinds of impellers have been developed over the years, such as vortex, semi-open to single- and multi-channel impellers. In addition to this, the very nature of wastewater is challenging with dry solids content varying over time. Water use has not remained static either.
Grundfos offers solutions to all these issues in the form of the S-tube impeller, which is a tube-shaped impeller placed in a pump housing that matches the smooth tube shape through the entire pump with no obstructions or dead zones through the hydraulic.
The simplicity of the S-tube impeller eliminates the need for advanced and costly add-on assemblies, which are designed to cut, shred or treat the wastewater as it flows through the pump.
Exclusive featuresWith the S-tube impeller, the efficiency is higher compared to other wastewater impellers as there are no edges, dead zones, or cutting functions that get worn over time. Besides, the S-tube impeller features an innovative, patented labyrinth and sealing system for years of trouble-free operation.
The S-tube impeller offers the highest hydraulic efficiency and best-in-class non-clogging capabilities for optimum reliability and lowest lifecycle costs.The difficulties in designing high-efficiency impellers have traditionally been challenges with sealing against backflow, vibrations, abrasive wear and clogging. Interestingly, when S-tube is tested in many wastewater installations across the world prior to its release, it’s observed that customers experienced substantially lower noise and vibration levels, reduced maintenance and far better non-clogging capabilities than ever experienced previously.
CompatibilityThe S-tube impeller is compatible with SE and SL ranges of pumps by Grundfos. The SL pump is designed for the transfer of drainage and surface water, domestic, municipal and industrial wastewater, and process water.
The SE pumps handle wastewater as well as process water and unscreened raw sewage in heavy-duty municipal, utility and industrial applications. These are ideal for large flows. They can be permanently installed using an auto-coupling guide-rail system or a fixed pipe connection. The pumps are also suitable for freestanding installation or use as portable utility pumps.
Promoting S-tube impellerGrundfos India has been promoting the concept of the S-tube impeller pumps in municipalities and corporations of various cities for their refurbishment projects of age-old sewage pumping stations. The company has, for the first time, conducted a nation-wide tour (mobile exhibition of these pumps and demonstration) for six months which ended recently. It had visited over 20 cities, travelling over 8,000 kilometres.
Encouraging responseThe response for these products have been good, and it is encouraging for the company to note the decision makers in various municipalities are keen to reduce the operational expenditure by bringing new technologies and capital expenditure to invest.
S-tube impeller benefitsEfficiency: World-class hydraulic efficiency up to 84 per cent without compromising free passage.Free passage: Spherical free passage up to 160 mm, meaning better solids handling and greater non-clogging capabilities.Simplicity: A design as simple and robust as a tube results in longer lifetime and lower maintenance costs.