Product Spotlight - November 2019

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While treating stormwater is a necessary evil for most municipalities, there are options that can help avoid sending it completely through a costly full-on wastewater treatment process. The AquaDisk cloth media filter from Aqua-Aerobic Systems is one of those options, as it can be used to filter stormwater at treatment plants or at remote locations.

The key to the technology is its OptiFiber cloth filtration media, which is engineered to accommodate the varying flows and characteristics of stormwater. The filter media provides low effluent TSS without the use of chemicals. According to Mark Hughes, product manager - filtration at Aqua-Aerobic Systems, years of trial went into development of the media.

“Over the past 30 years, Aqua-Aerobic Systems has developed and tested hundreds of media options,” he says. “It is relatively easy to make a media that removes solids well, but it’s very difficult to make one that backwashes effectively and lasts over time.” 

The unit itself has a small footprint and is mechanically designed to handle grit and scum. It enables effective TSS removal in a low-energy backwash system with no complicated startup. It can be enclosed in a building at the plant or at remote sites. In addition, the filter can be used for tertiary treatment between rain events.

“This technology has been applied for treatment of combined sewer overflows, in place of primary clarifiers, and in surface water treatment for industrial use,” Hughes says. “We fully expect that the applications for this technology will continue to increase in the near future.”  

According to Hughes, the majority of research for the AquaDisk pile cloth media filter has involved developing cloth media for a variety of applications. Each media is tested extensively for tensile strength and elongation, long-term operation and backwash endurance before being introduced to the market. “This testing is done at our research and technology center long before it is ever installed at a plant,” he says. “In addition, operating the filters and doing this testing ourselves allows us to offer firsthand experience and recommendations to our customers.”  

Hughes says that those years of trial and error have proven successful, as overall customers are “delighted with the technology.” 

“The most common feedback we get is that customers are surprised at how little attention and maintenance the filters require,” he says. “We also hear customers who are amazed with the solids handling capacity during upset conditions.” 800-940-5008;


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