HUBER Drum Screen LIQUID Reliable fine screening with maximum separation efficiency

The HUBER Drum Screen LIQUID is characterized by its horizontally installed screen basket, which is positioned either in a channel or a tank. Wastewater flows through the basket from the inside to the outside. As the wastewater enters the screen basket from the open front, solids are retained within the drum. A specially designed seal between the channel and the front-end opening of the screen basket ensures that no unscreened wastewater bypasses the screen, guaranteeing effective solids retention and optimal filtration.

As solids accumulate on the drum surface of the HUBER Drum Screen LIQUID, the screen gradually becomes blinded, causing a rise in the water level upstream. When the predefined maximum water level is reached, the screen basket begins rotating around its axis to clean the surface. A spray nozzle bar at the top of the drum sprays water onto the drum surface from the outside, effectively removing the solids and flushing them into a trough inside the drum. The screenings are then discharged by gravity. As an option, the screenings can be pumped to a higher level for further processing or disposal.

High-Pressure Cleaning

For effective preventive maintenance, the HUBER Drum Screen LIQUID can be equipped with an optional innovative automatic high-pressure cleaning system. The system includes a rotating spray nozzle head that moves linearly along the entire length of the screen basket, ensuring thorough and efficient cleaning. The water pressure causes the nozzle head to rotate, providing consistent cleaning coverage across the full surface. This system significantly reduces water consumption and minimizes operator involvement, making it both cost-effective and low-maintenance.

Reliable Sealing

The performance of any system heavily depends on its sealing, especially at the inlet. To ensure optimal separation and prevent unscreened wastewater from bypassing the screen, the HUBER Drum Screen LIQUID features a specialized PU (polyurethane) sealing. This high-quality seal guarantees that only properly screened wastewater passes through, ensuring consistent and reliable separation results throughout the system's operation.

Low-Maintenance Direct Drive

The HUBER Drum Screen LIQUID is designed with a unique, self-adjusting bearing unit that allows the drum to be mounted stress-free, with automatic angle compensation. This innovative design reduces wear and tear, ensuring smooth operation. Additionally, the bearings are automatically lubricated, minimizing the need for manual maintenance and enhancing the system's reliability and availability over time. This low-maintenance direct drive system contributes to reduced downtime and long-lasting performance.

The HUBER Drum Screen LIQUID is available in various designs, making it suitable for a wide range of solids-liquid separation applications. 

Depending on the specific needs of the application, the horizontal drum can be equipped with different types of coverings, including mesh, wedge wire, or perforated plates. 

This flexibility allows the system to be tailored for optimal performance, ensuring effective separation based on the requirements of the treatment process. 

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• HUBER Drum Screen LIQUID with wedge wire drum, wedge wire sizes 0.5 / 1 / 2 / 3 mm.
• Solids retention with high throughput capacities of up to 60 MGD / 10,000 m³/h per machine.
• Typical applications: Mechanical pretreatment on sewage treatment plants, industrial solids-liquid separation
• This model is ideal for handling large volumes of wastewater while ensuring high-quality separation and reliable performance.

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• HUBER Drum Screen LIQUID with perforated plate, perforations 1.5 / 1 / 2 / 3 mm.
• High separation efficiency and retention of fibres and hair.
• Typical applications for 1 and 2 mm perforation: Protection of hollow-fibre membrane filtration plants
• Typical applications 3 mm perforation: Protection of plate membrane filtration plants
• This design ensures high-quality filtration and reliable protection for downstream systems, improving operational efficiency and extending equipment lifespan.

Drum Screen LIQUID mesh

• HUBER Drum Screen LIQUID with mesh, mesh sizes from 0.2 up to 0.75 mm.
• Maximum separation efficiency and reduction of COD and BOD by up to 40%.
• Typical applications: Load reduction in the preliminary treatment stage, replacement for primary settlement tank, sea and river outfall applications.
• This design is an ideal solution for a wide range of applications where fine solids separation is critical.

A tailored solution to suit any application:

• Industrial and municipal applications
• Primary and secondary treatment stage
• Protection of membrane plants
• Replacement for primary settlement tank
• Load reduction in the biological treatment system through reduction of COD / BOD / AFS
• Screening in the inlet to power plants
• Treatment of cooling water circuits
• Brewery wastewater
• River and sea outfall
• Surface and river water screening

Replacement for Primary Settlement Tanks

As a special application, the HUBER Drum Screen LIQUID is also a key component of the HUBER CarbonWin® System, which provides a more economical alternative to conventional primary settlement tanks (for more details, refer to the product brochure).