Wastewater Treatment
Robuschi has been a leading partner for the wastewater industry for many decades. Its rotary lobe blowers, screw compressors and centrifugal pumps offer energy efficient and sustainable solutions for a variety of applications in this field, such as primary sedimentation, aeration, slurry liquid pumping and back washing sand filtration.
For wastewater treatment plants, energy can account for as much as 75% of the overall operation costs of the facility. Aeration systems are the largest energy user in wastewater treatment plants (more than 60% of the total electricity cost), so improvements in efficiency can significantly reduce energy costs
Up to 75% of your compressed air costs will be spent on energy, so state-of-the-art aeration equipment can make the difference, not only to reduce your carbon footprint, but by substantially lowering life cycle costs. Choosing the right technology is crucial. The benefits of taking the time to learn about the range and choice of products from positive displacement blowers, screw blowers, air blowers, or turbo blowers, are immeasurable.
Benefit from Experts
The spectrum and process complexity in the environmental industry make it indispensable to choose a well-established, knowledgeable supplier for every application. Thanks to its wide range of technologies, its brands’ excellent reputation and its outstanding global team of application experts, Robuschi can provide the most suitable solution that combines superior efficiency, small footprint, minimum maintenance, operating costs, long service life and low noise emission. There are popular control choices for an output blower system and there are custom solutions. The main thing to do is speak to an expert about your particular application and its requirements.
Competitive Total Cost
of Ownership
The initial investment in wastewater treatment equipment constitutes only one of the key elements to consider when choosing a solution. In fact, if we look at the total cost of ownership, we are better able to assess the cost competitiveness of each area of spending ie. capital investment, installation, operation and ongoing maintenance costs. We provide solutions that look at keeping to a minimum all of these components: energy consumption, installation and set-up, service and maintenance.
Excellent Application Know-how
Excellence in applications is achieved thanks to a close cooperation with our application engineers. Robuschi offers the experience and know-how gained over of many decades as one of the industry leading suppliers and partners. Domestic sewage treatment ideally provides conversion processes that can turn the discharge product into a useful byproduct, such as CHP power, farming or even animal feed.
Choosing the best solution for sewage treatment systems that meet the regulations for residential conditions as well as protecting the environment is essential. There are rainwater, drainage, and pollutants conditions that vary.
Energy Efficiency
Robuschi is able to offer a wide portfolio with various technologies targeting the most efficient operation possible, to accommodate the needs of all applications and their constraints. In addition to that, we provide a wide range of supporting technologies such as frequency converters, human machine interfaces and interactive web-based communications tools to keep energy cost down and optimise process flows.
A Unique Array of Technologies
With its market leading brands and products, Robuschi is in a unique position in the wastewater treatment sector. This is the result of a long and sustainable history of customers’ partnerships built through optimised, tailored and high quality solutions whose reliability and performances have stood the test of time. From our engineering excellence to our management skills, we have the solutions to any waste water treatment plant or sewage treatment plant application – from the initial install to providing parts and ongoing service.
Primary Sedimentation
In the primary sedimentation stage, sewage flows through large tanks. These tanks are used to settle sludge while the grease and oil rises to the surface and is skimmed off. Primary settling tanks are usually equipped with mechanically-driven scrapers that drive the collected sludge continually towards a hopper in the base of the tank where it is pumped to treatment facilities using blowers or similar technologies. As a result biological materials remain on the surface and the heavy components (mainly sand) are isolated.
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Aeration Process in WWT Plants
The aeration tanks in wastewater treatment plants are activated with oxygen by using compressed air. A thorough mixing of the sludge with oxygen increases the gas yield and reduces its retention time in the tank. Even better results are achieved with warm compressed air. Blower technologies can be found invarious types of wastewater treatment plants, including aerobic activated sludge systems, SBR, nitrificationdenitrification in a single basin and MBR.
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Slurry Liquid Pumping
Using slurry pumps, tough, abrasive, viscous liquids and particles in suspension can be transferred from one tank to another of the wastewater treatment plant.
Back Washing Sand Filtration
Air is used to expand the filter bed, breaking up compacted material. Clean backwash water is pumped in, suspending the loose material from where the particles are lifted through and carried away.
Sludge Treatment
Removing and reintroducing the activated sludge to and from the wastewater treatment process. Loading & unloading from tankers and other transport methods. The activated sludge is the main product of wastewater treatment and needs to be removed from the facility on a regular basis, however some product maybe required to remain on site for reintroduction into the process in times of high inlet flow and long periods of wet weather to ensure the efficiency and operating life of the plant. Once removed from site the activated was once just taken to landfill but is now used in various applications such as CHP power, farming and animal feed. Depending on the conveying process the operating pressure is normally higher at around 1-2 bar.
