Waste Management In Action

Dewatering the market: Aqseptence Group

Phil Amor, Aqseptence Group Business Development Manager, explains how high solids separation is key to unlocking the economic growth potential inherent in food waste.

The National Food Waste Strategy estimates that food waste costs the Australian economy $20 million each year.

From the inverse perspective, a 2019 report by accounting firm Ernst & Young found that better recycling technology could grow Australia’s economy by $324 million a year.

While waste reduction is the central driver of most comprehensive waste strategies, rising technological efficiency in the resource recovery space suggests a growing economic opportunity.

Phil Amor, Aqseptence Group Business Development Manager, says recycling food waste can be a challenging process, given stringent government regulations rapid degradation rates.

As such, effectively capturing the economic potential of the material requires efficient and high-capacity processing equipment, he says.

“As a core component of the food waste recovery process, quality solids separation and dewatering via trommel screens is critical for the delivery of high-quality outputs,” Phil says.

He adds that the key to effective dewatering is high rates of solids capture.

“When dealing with organics solid separation, operators require a very efficient trommel screen to facilitate high-quality separation rates,” Phil says.

“The sheer force of the Contra-Shear Milliscreen, for example, ensures aggressive pumping and solids capture.”

The Contra-Shear Milliscreen is designed and manufactured in Australia by Johnson Screens.   

Contra-Shear Screens consist of a Johnson Screens Vee-Wire drum with an internal feed tank.

“Flow passes into the internal tank before it overflows into the weir. The internal feed tank then controls velocities and reduces the force of the flow onto the drum,” Phil says.

“The Contra-Shear Milliscreen force generation allows solid separation at a faster rate than typical trommels, which makes it time and cost-efficient.” Phil says.

“Additionally, it has a capture efficiency of up to 95 per cent for solids greater than aperture sizing, with flow rates up to 3360 cubic metres per hour in a single unit.”

According to Phil, fundamental to the separation process is the “Contra-Shear” action, which is produced by rotating the direction of the screen drum in the opposite direction, relative to the direction of the influent flow.

“Although there are imitations in the market, the Contra-Shear Milliscreen is exclusively an Aqseptence Group product,” Phil says.

He adds that customers should purchase genuine Contra-Shear Milliscreens from Aqseptence Group to avoid disappointment.

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