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

The HUBER Drum Screen RoMesh® consists of a horizontal screen basket equipped with a fine square mesh (0.2 to 1 mm mesh size) or a perforated plate (2 to 3 mm perforation). Due to the two-dimensional effect of the mesh or perforated plate the screen removes very fine particulate material.

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

The discharged screenings are usually dewatered in a down-stream screenings press. A spray bar with alternately operating spray nozzles cleans the screen surface while the drum rotates. The screened wastewater can be reused as wash water if a sufficiently fine mesh is used.

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

The machine is completely made of stainless steel and pickled in an acid bath for optimal corrosion protection and minimised maintenance requirements. The compact units are supplied in a container.

Separation of hair and fibers

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 hollow fiber membrane plants as fibers may lead to tressing or blocking of the membrane.

• 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 often only treated with a mechanical coarse screen before being discharged directly into rivers or the sea. Ultra-fine screens are highly effective for outfall applications in rivers or seas, as they significantly reduce the COD and BOD loads in the discharge. This process is both fast and cost-effective.

Due to their fine mesh, these screens not only capture waste but also effectively separate fine particulate material of organic origin, which has a high COD and BOD content. The screen is capable of reducing BOD by 20% and filterable solids (AFS) by 50%, ensuring compliance with the stringent discharge standards

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

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

Separation of hair and fibers is crucial for reusing wastewater as wash water. The HUBER Drum Screen RoMesh®, with its two-dimensional square mesh, effectively retains nearly all hair and fibers, ensuring the treated water is suitable for reuse.

Treatment of industrial process water

Mechanical wastewater pre-treatment is essential to meet discharge requirements for sewer systems. Since wastewater fees are often based on the load (freight) discharged, it is economically advantageous to minimize this load at the source. The HUBER Drum Screen RoMesh®, featuring a square mesh for high capture rates, is specifically designed for this purpose, efficiently removing solids and reducing the load on downstream systems.

A selection of the variety of applications in industries:

• Paper and pulp industry: separation of fine fibers
• 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 fibers from wash waters