• Hydro MicroScreen header image

Hydro MicroScreen™

A low-energy, small footprint rotating belt screen that delivers exceptional solids removal from municipal & industrial wastewater and process water. 

Hydro Microscreen Internal View

The Hydro MicroScreen™ is designed to exacting OSHA standards, ensuring safe and reliable operation. Maintaining efficiency even at peak design flow rates, it enables municipal and industrial operators to:

  • Reduce energy use & footprint
  • Cut maintenance costs & operational downtime
  • Save on solids handling
  • Turn their waste into a commodity

 Reduces energy requirements by up to 50% and footprint by up to 90% compared to conventional primary treatment technologies

 Patented design features enhance flow treatment and dewatering performance

How the Hydro MicroScreen™ works

hydro microscreen how it worksFlow enters the Hydro MicroScreen™ (either pumped or via gravity) and hits an energy dissipation plate and flow diverter. The diverter evenly distributes the influent over the entire width of the screen.

As solids build up on the screen they create a mat which causes the water level in the influent cavity to rise. An ultrasonic sensor allows liquid level monitoring of the influent cavity.

Once the water level reaches a programmed set point the screen begins to rotate upwards and screening begins. Depending on the inlet solids loading and volume of water the screen automatically adjusts from 0 to 21 rpm. 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.



The collected solids are conveyed to the dewatering section for further compaction - the Hydro MicroScreen™ produces up to 50% dry solids when fitted with a dewatering section and compression zone - which is isolated to protect the screen and lower roller from settled debris.

Cleaning the mat off the screen is simple: most of the material falls into the dewatering auger section by gravity, while any remaining solids or grease are removed by internal wash water at 550-689 kPa (80-100 psi), which is followed by a scraper blade.  

Hydro Microscreen Conveying Solids into Dewatering Screw

Hydro Microscreen Dewatered Screenings Ready for Disposal or Recycling

Technical Information:

Removal rates

  • TSS (Total Suspended Solids): up to 70%
  • BOD (Biological Oxygen Demand): up to 40%
  • FOG (Fat, Oil & Grease): up to 40%
  • Phosphorus: up to 10%

Technical characteristics

  • Maximum hydraulic capacity (L/s)*: 110 / 138 (Industrial / Municipal)
  • Power consumption (hp): 2.5-7.0
  • Estimated power consumption (kWh/day)**: 30-88

* Capacity is based on a 200 μm screen and will vary based on screen opening & incoming solids loads (TSS)

** Estimated energy consumption based on 24-hour continuous operation at 70% duty cycle

Operational Benefits:

Reduce energy use & footprint

The Hydro MicroScreen™ is a low-energy, small-footprint system, providing economical treatment in a small space. With a footprint between 4 and 10mand energy demand of between 2.5 and 7.0 hp, it saves up to 50% on energy use and up to 90% on footprint compared to conventional primary treatment technologies. 

Cut maintenance costs & system downtime

Maintenance of a conventional primary clarifier is a costly, lengthy and hazardous process. By contrast the Hydro MicroScreen™ is a small, accessible unit that can be cleaned and maintained quickly and easily – minimising maintenance costs and reducing costly system downtime. A two-unit system provides dual redundancy, eliminating system downtime during maintenance altogether. By reducing the load placed on downstream systems and processes it also prolongs downstream equipment lifetimes and reduces the downstream maintenance burden.

Save on solids handling

With dewatering section and compression zone, Hydro MicroScreen™ produces up to 50% total solids – without the use of chemicals. This increases the efficiency of solids handling, cutting the cost of transport and disposal.

Turn waste into a commodity

Hydro MicroScreen™ screens and captures industrial process material and by-products at high removal rates. This captured material may then either be returned to the process chain, minimising waste and increasing operational efficiency, or used to offset costs by converting it into energy or selling it on to secondary markets. For municipal customers, it provides the option of receiving septage or FOG, providing a valuable potential revenue stream to offset costs.

Hydro Microscreen Being Used in Food Processing Industry

Hydro Microscreen Used in Food Processing of Carrots

Industrial Applications:

Hydro MicroScreen™ can be utilised across a wide range of industries to improve operational efficiency and cut pollution:

  • Food processing & production
  • Brewing. distilling & wine making
  • Bottling & beverage production
  • Pulp & papermaking
  • Tanning, leather & hide processing
  • Mining, metals & ore processing

Technical Data:

Download Hydro MicroScreen™ Municipal Applications PDF [244 KB]

Download Hydro MicroScreen™ Industrial Applications PDF [379 KB]