Rotary Drum Screen Filter for Wastewater Separation System

Product introduction of Rotary Drum Screen Filter

The rotary drum screen filter is a multi-functional wastewater screening system widely used in solid-liquid separation processes. It features a rotating cylindrical drum installed at an optimized angle, allowing wastewater to pass through fine screen openings while retaining suspended solids.

As wastewater flows through the drum, solids are intercepted and continuously lifted and discharged by a spiral mechanism. This ensures stable filtration efficiency and prevents clogging. The system is widely used in municipal sewage treatment plants, industrial wastewater facilities, and water supply pretreatment systems.

Working principle

The rotary drum screen filter operates through mechanical rotation and gravity-based screening. Wastewater enters the drum at an inclined angle (typically 35°), where it flows through fine screen openings. Suspended solids and floating debris are retained on the screen surface.

As the drum rotates, a spiral mechanism lifts and transports the captured solids toward the discharge end. At the same time, clean water passes through the screen and exits the system for further treatment or reuse.

The self-cleaning action prevents clogging, while continuous rotation ensures stable filtration performance even under high flow conditions. This enables uninterrupted operation in demanding wastewater environments.

Product Parameter Table

Drum diameter (mm)	1600
Drum length (mm)	1500
Motor (kW)	1.1 – 3.0
Installation angel (°)	35°
Channel depth (mm)	≤9000
Channel length (mm)	Customizable
Discharge height (mm)	Customizable

Main Features

• Rotary drum screen filter supports multi-stage treatment including screening and dewatering
• Fine screen apertures available in 0.5 mm, 1 mm, 1.5 mm, and 3 mm options
• Passive filtration design maximizes solid removal efficiency
• Large treatment capacity with compact installation footprint
• Self-cleaning operation reduces maintenance requirements
• Low energy consumption ensures cost-effective operation
• Simple structure provides high durability and stable performance
• Continuous operation suitable for high-load wastewater systems
• Spiral drum design improves screening and transport efficiency
• Suitable for fine suspended solids and floating debris removal

Application Scenarios

The rotary drum screen filter is widely used in wastewater pretreatment and industrial filtration systems, including:

• Municipal sewage treatment plants
• Industrial wastewater treatment systems
• Chemical processing wastewater filtration
• Textile and dyeing wastewater treatment
• Food and beverage industry wastewater screening
• Petrochemical wastewater solid-liquid separation
• Aquaculture and breeding wastewater treatment
• Water supply pretreatment systems
• Urban drainage and environmental protection projects

FAQ

1. What is a rotary drum screen filter used for?

It is used for wastewater pretreatment and solid-liquid separation in industrial and municipal treatment systems.

2. How does a rotary drum screen filter work?

It works by rotating a cylindrical mesh drum that separates solids from wastewater using gravity and mechanical motion.

3. What is the advantage of rotary drum screen filter over static screen?

4. What industries use rotary drum screen filters?

It is widely used in municipal sewage, aquaculture, food processing, chemical, and textile industries.

5. What particle size can it remove?

It can remove fine suspended solids with filtration accuracy ranging from 0.5 mm to 3 mm.

6. Does it require frequent maintenance?

No, the self-cleaning system ensures low maintenance and stable long-term operation.

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