Drum Screen LIQUID

Reliable fine screening with maximum separation efficiency
 Maximum retention of fibres and hair
 Operating reliability for membrane bioreactors
 Maximum COD / BOD5 reduction rates
The HUBER Drum Screen LIQUID is available in different designs and suitable for numerous applications of solids-liquid separation. Depending on the specific application requirements the horizontal drum is covered with a mesh, wedge wire or perforated plate and is suitable for channel or tank installation.
Design and Function
The characteristic feature of the HUBER Drum Screen LIQUID is its screen basket which is horizontally installed
in the channel or in a tank. The wastewater to be treated flows through the basket from inside to outside. Whilst the wastewater flows through the open front into the screen basket, solids are retained within the drum. A special sealing between the channel and the front-end screen basket opening prevents unscreened wastewater from passing through the screen basket.
The solids settling on the drum surface lead to gradual blinding of the surface. As a result, the water level upstream of the screen rises. When the predefined maximum water level has been reached, the screen basket starts to rotate around its axis to clean its surface. At its crown a spray nozzle bar sprays water onto the drum surface from outside to remove the solids and flush them into a trough inside the drum basket from where the screenings are discharged by gravity.
Model variations
Drum Screen LIQUID ww: wedge wire
 Wedge wire sizes 0.5 / 1 / 2 / 3 mm
 Solids retention up to 10,000 m³/h per machine
 Typical applications: Mechanical pretreatment on sewage treatment plants, industrial solids-liquid separation
Drum Screen LIQUID pp: perforated plate
 Perforations 1.5 / 2 / 3 mm
 High separation efficiency and retention of fibres and hair
 Typical applications: Protection of membrane filtration plants
Drum Screen LIQUID star: folded perforated plate
 Perforations 1 / 1.5 / 2 mm
 Increased screen surface for higher throughputs, high separation efficiency and retention of fibres and hair
 Typical applications: Protection of membrane filtration plants
Drum Screen LIQUID mesh: fine mesh fabric
 Mesh sizes from 0.2 up to 0.75 mm
 Maximum separation efficiency and reduction of COD and BOD by 20 – 40%
 Typical applications: Load reduction in the preliminary treatment stage, replacement for primary settlement tank, sea and river outfall applications