The Hydro MicroScreen™ is a low-energy, small-footprint rotating belt screen that delivers exceptional solids removal from both industrial process water and wastewater. Maintaining efficiency even at peak design flow rates, it enables industrial operators to meet discharge requirements, increase efficiency and save money by cutting energy and chemical use, minimizing maintenance costs, reducing solids handling and recovering materials to be recycled or reused, converted into energy or sold on.


Hydro MicroScreen™ can help a wide range of industries to improve efficiency and cut pollution:

Only Hydro MicroScreen:

  • Reduces energy requirements by up to 50% and footprint by up to 90%
  • Incorporates patented design features to enhance flow treatment and dewatering performance
  • Is designed to exacting OSHA standards to ensure safe, reliable operation

Introducing the new Floc99™ ultrafine solids module

We now offer a new ultrafine solids module that uses chemical flocculation to achieve up to 99% TSS removal and delivering over 40% cost savings on chemical use. 

To learn more visit the Floc99™ ultrafine solids module page on our industrial microsite. 

Designed for

Fine particles
Industrial materials


Reduce energy use and footprint

The Hydro MicroScreen™ is a low-energy, small-footprint system, providing economical treatment in a small space. With a footprint between 4 and 10 m2 and 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 and 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 – minimizing 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.

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, minimizing waste and increasing operational efficiency, or used to offset costs by converting it into energy or selling it on to secondary markets. F

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.

Protect downstream treatment systems

The Hydro MicroScreen™ does not require equalization prior to screening, and will reduce the TSS and particulate BOD going into a Dissolved Air Flotation (DAF) system - reducing the load to help achieve better overall performance. In new DAF installations a Hydro MicroScreen™ can reduce the size / capacity of the DAF system required.

Capture more solids

Wedgewire drum screens are typically offered in sizes that range from 250 – 1500 micron openings.  This means they will miss the materials that are smaller than that.  The Hydro MicroScreen™ can be sized to capture particles as small as 100 micron and larger. Finer solids are the most difficult to deal with and can contribute to a large portion of the total solids loading.

Additionally, drum screens require a separate compaction / dewatering system.  Compared to drum screens, the Hydro MicroScreen™ provides significantly better performance in TSS and BOD removal, uses less wash water, and does not require a separate compaction system.

Cut your sedimentation / clarification footprint

In addition to materials recovery and solids removal, the Hydro MicroScreen™ offers numerous benefits compared to conventional settling / sedimentation systems:

  • Uses just 15-30% of the energy
  • Provides superior solids dewatering
  • Reduces overall solids handling costs
  • Requires as little as 10% of the overall footprint
  • Reduces retention time
  • Increases plant capacity
  • Often does not require chemicals
  • Capital construction costs are just 20-30% of a conventional settling system
How it works

How it works

Flow enters (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.



Technical information

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 (gpm)*: 2,200 / 1,750 (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 and incoming solids loads (TSS)

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



Case Studies

Case Studies