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Which air blower technology fits best for wastewater treatment?

Operating cost efficiency is of vital importance, especially when wastewater treatment demands increase this next decade and beyond. Position yourself with the best equipment to handle the load. Read on to learn more.

Take this opportunity to upgrade your systems

The wastewater treatment market is expected to be worth $211.3 billion by 2025.

There will be increasing demand for clean water that passes regulatory checks and addresses environmental concerns. Companies that work in wastewater treatment should be adaptable to meet new challenges and discover opportunities in the MENA region.

air-blower-used-in-waste-water-treatment

In much of the MENA region aging water management systems cause excess energy consumption. And unmanaged sludge build-up raises the expenditure of wastewater treatment facilities in the region. Studies have shown that updating infrastructure to improve energy-efficiency usually concurs with more effective treatment and operation of wastewater treatment plants. That’s why modern wastewater treatment plants should seek out energy efficient air blower solutions and apply them in key processes like:

  • Aerating the wastewater by diffusion so that the bacteria thrive.
  • The activated sludge process that removes solids and organic material. This includes the membrane bioreactor process, the moving bed biofilm reactor process, and the sequencing batch reactor process.
  • Indirectly assisting the anaerobic digestion of the sludge.
  • Filter backwashing as a form of preventative maintenance where water is pumped backwards through the filter media with the assistance of air blowers.

Free Ebook: How to reduce the energy consumption of air blower

How your wastewater treatment can be more energy efficient

Aeration is a method of removing organic matter from wastewater. Oxygen is mixed with wastewater to allow aerobic bacteria in the water to break down organic waste. The method causes minimal odors, and it is both quick and efficient. It requires a constant and abundant supply of oxygen. So, best compressed air machines need to be used. The systems involved in the aeration process can consume anywhere from 25 to 60% of a plant’s power.

Thorough investigations of 23 treatment plants in Germany and Switzerland, researchers found that their power consumption could be reduced by an average of about 67 % [Handbuch – Energie in Kläranlagen, 1999].

While the entire facility deserves a proper energy efficiency audit we are confident that our air blowers, built with our patented VSD+ technology, can reduce energy consumption during the process of aeration. 

Watch the customer story below from waste water treatment and how they reduce the total cost of ownership.

Why a VSD+ air blower is a great choice

The ideal compressed air solution for the wastewater treatment industry has always been low pressure oil-free air blowers. Oil-free is preferred of course because you don’t want to introduce other contaminants to the water.

It is highly recommended to use an oil-free rotary screw blower for pressures requirements greater than 0.5 bar(g). Traditional tri-lobe blowers are efficient until the water level in the aeration tank is less than 4m. This offers a back-pressure resistance of only 0.45 bar(g) or below. However, once the pressure crosses 0.5 bar(g) the twin Lobe and tri-lobe blowers start consuming high power and contribute to high energy cost for the treatment process.

As screw blowers are direct-coupled/gear-driven machines, they have higher efficiency compared with the traditional belt-driven lobe blowers. This efficiency gain comes from the fact that on an average belt driven machines have 5% - 7% more transmission losses compared to gear-driven machines.

Discover our complete range of oil-free air blowers and make a note of our VSD+ variants.

For operations where the demand for compressed air fluctuates, a VSD technology automatically adjusts motor speed to match air demand, providing significant energy savings. In contrast, a traditional fixed-speed air blower can operate only at full capacity. If less than full air flow is required for the processes, a lot of energy is consumed and wasted.

You can click here to learn more about VSD technology, or talk to our product specialist for more information. 

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Which air blower technology fits best for wastewater treatment?

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