HUBER Drum Screen RoMesh® Ultra fine Rotary Drum Screen with two-dimensional effect for very fine particulate material

The HUBER Drum Screen RoMesh® features a horizontal screen basket equipped with either a fine square mesh (ranging from 0.2 to 1 mm mesh size) or a perforated plate (with 2 to 3 mm perforations). The two-dimensional nature of the mesh or perforated plate allows the screen to effectively remove very fine particulate material.

The wastewater flows from the inside to the outside of the basket through the screen surface. The filtrate is discharged vertically from the bottom of the drum, while the screenings are transported horizontally by the rotation of the screen towards the discharge point.

The discharged screenings are typically dewatered in a downstream screenings press. A spray bar with alternating spray nozzles cleans the screen surface as the drum rotates. If a sufficiently fine mesh is used, the screened wastewater can be reused as wash water.

The HUBER Drum Screen RoMesh® Screen is used to remove ultra-fine solids from municipal and industrial wastewater.

The machine is fully constructed from stainless steel and undergoes submerged acid passivation for optimal corrosion protection, ensuring minimal maintenance requirements. The compact units are supplied in a container for easy installation and operation.

Separation of Hair and Fibres 

Separation of hair and fibers is crucial to protect downstream treatment stages. In technologies like Membrane Bioreactors (MBRs), preliminary separation of fine material is essential to ensure smooth and low-maintenance operation. Specifically, the removal of fibers and hair is critical before membrane plants, as these materials can cause blinding, compromising membrane performance.

• 1.0 mm square mesh to protect hollow fiber membranes
• 2.0 or 3.0 mm perforated plate to protect plate membranes feed pump from sump or channel

COD and BOD reduction prior to river or sea outfalls

Raw wastewater is frequently only passed through a mechanical coarse screen prior to being discharged directly to a river or the sea. Ultra-fine screens are ideal for river or sea outfall applications as they reduce the discharged COD and BOD load significantly, quickly and at low costs.

Due to their fine mesh they separate not only waste but also fine particulate material of organic origin and with a considerable COD and BOD content. The screen is able to reduce BOD by 20% and filterable solids (AFS) by 50% and thus can reliably meet the discharge standards required for the North Sea bordering states.

Even better performance can be achieved with prior precipitation and flocculation.

Recovery of wash water and service water free of hair and fibres

Separation of hairs and fibres is essential if you want to reuse wastewater as wash water. The HUBER Drum Screen RoMesh® with its two-dimensional square mesh retains virtually all hair and fibres.

Treatment of industrial process water

Mechanical wastewater pre-treatment is necessary to meet the requirements for wastewater to be discharged to sewer systems. Since wastewater fees depend on the freight discharged it is economically beneficial to minimise the freight at source. The HUBER Drum Screen RoMesh® with its square mesh for high capture rates is designed specifically for this application.

A selection of the variety of applications in industries:

• Paper and pulp industry: separation of fine fibres
• Meat processing industry: separation of scraps
• Agricultural industry: separation of fruit and peel residues
• Breweries: mechanical preliminary treatment of all process waters
• Laundries: separation of fibres from wash waters