Name: Channel Drum Screen
Brand: JX Filtration

Description

JX Filtration offers a full range of channel drum screens from compact single-unit models to high-capacity installations, with flexible customization options to suit various channel widths and screening needs across municipal and industrial wastewater treatment—continuous, automated, and built for demanding conditions.

A channel drum screen, also known as an in-channel rotary drum screen, is a mechanical screening device installed directly within a wastewater channel to remove fine solids, fibers, and suspended matter from the flow. The unit combines a rotating cylindrical drum screen, a spiral screw conveyor, and a compaction zone into a single integrated system. Available in internally fed configurations where flow enters the drum interior and exits through the screen surface, the channel drum screen achieves continuous screening without interruption and is an economical solution for wastewater pretreatment and MBR protection.

Working Principle

Filtration Stage: Wastewater flows into the rotating drum through the open front end. A specialized seal between the channel wall and the drum inlet prevents unscreened wastewater from bypassing the screen. As water passes through the drum surface from inside to outside, solids are retained on the internal screen surface.
Cleaning & Transport: As solids accumulate, the water level upstream rises. When the preset differential head loss is reached, the drum begins rotating. Paddles or a spiral screw fixed to the inner drum surface lift the retained screenings toward the top of the drum, where a spray nozzle bar washes them into a discharge trough. The spiral conveyor then transports the screenings through an optional washing and compaction zone before discharge.
Continuous Operation: The entire cycle—screening, washing, conveying, and dewatering—is performed in one unit with a single drive motor. The drum rotates only when needed, minimizing energy consumption and wear.

Advantages

Integrated all-in-one design – Screening, washing, conveying, and compaction in one unit, no extra equipment needed
Compact in-channel installation – Installed directly in the channel at a 35-degree incline, saving civil construction costs and space
Automatic self-cleaning – External spray bar and cleaning brush maintain screen surface permeability, reducing manual intervention
Low energy consumption – Drum rotates only when differential head loss triggers operation
Corrosion-resistant construction – Drum, frame, and screw available in SS304 or SS316L for long service in harsh wastewater environments
Low maintenance – large self-lubricating bronze bushings need no lube pump; pivot mount design simplifies inspection and servicing

Application

Municipal wastewater treatment plants (headworks screening)
Paper making industry
Industrial wastewater pretreatment
Textile and printing/dyeing wastewater
Membrane Bioreactor (MBR) protection
Slaughterhouse and livestock wastewater
Food processing industry
Water intake screening for surface water

Materials & Connection Types

Materials: Stainless steel 304, 316, 316L, and carbon steel with anti-corrosion coating.

Screen Materials: Wedge wire screen (0.5–6.0 mm slot opening), perforated plate (2–6 mm perforation).

Key Parameters

Parameter	Range
Channel Width	600 – 1,200 mm
Screen Opening	0.5 – 6.0 mm (wedge wire) / 2 – 6 mm (perforated plate)
Incline Angle	35 degrees
Drum Diameter	Up to 1,400 mm
Flow Capacity	Up to 4,600 m³/h
Control System	PLC with differential level control / timer control