Industrial Solids Removal System

April 1, 2019
Hydro International’s Hydro MicroScreen™ is a low-energy, small-footprint rotating screen that delivers exceptional solids removal for industrial process water and wastewater.

The Hydro MicroScreen™ from Hydro International is a low-energy, small-footprint rotating screen that delivers exceptional solids removal for industrial process water and wastewater. Maintaining efficiency with automatic adjustment to flow and solids loading, it enables facilities to meet discharge requirements.

Reduce or Eliminate Sewer Surcharge Fees

Water-intensive industries, such as food processing, wineries and breweries, and pulp and paper, can have their profits eroded by sewer surcharge fees. Plants must pay for clean water and then pay again to dispose of that water. The motto “Reduce, Reuse, and Recycle” hangs on signs throughout plants to encourage reduction of total discharge volumes. The Hydro MicroScreen aids plants in reducing water and provides cleaner, drier captured solids and allows for effluent reuse. It typically removes 60–70% total suspended solids (TSS), 30–40% biological oxygen demand (BOD), and 30–40% of fats, oils and grease (FOG) for industrial operations. This performance comes in a fraction of the footprint of conventional technologies, without using air or chemicals, and can be easily moved around your plant to wherever it is needed most.

Hydro MicroScreen™ industrial solids removal system by Hydro International.

Preserve the Capacity of Expensive Downstream Treatment Equipment

Some facilities are required to treat wastewater on site to meet their discharge permit using biological nutrient removal (BNR) wastewater treatment systems such as anaerobic digestion, dissolved air flotation (DAF), membrane filtration, and aeration. This equipment is incredibly expensive and often uses massive amounts of energy. Additionally, BNR systems aren’t good at treating larger-sized particulates. Reducing gross solids sent downstream significantly reduces the amount of treatment needed at your plant, which results in a smaller footprint and reduces energy use. Clients have been able to re-rate their DAF systems, or eliminate the need for an additional DAF entirely, using Hydro MicroScreen separation.

How it Works

As solids build up on the screen, they create a mat, causing the water level to rise. A sensor monitors the liquid level. Once the water level reaches a programmed set point, the screen rotates upwards and screening begins, automatically adjusting to match volume. As the screen rotates, solids are lifted out of the influent cavity while the cleaned screen is reintroduced at the bottom of the inlet cavity. Collected solids are conveyed to the dewatering section for compaction, producing up to 50% dry solids when fitted with a compression zone. Cleaning the mat off the screen is simple: most material falls into the dewatering section by gravity while any remaining solids or grease are removed by wash water and a scraper blade. IWW

Hydro International provides stormwater, wastewater, flood control and combined sewer overflow (CSO) products and services to increase operational performance and reduce environmental impact. To learn more, visit

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