Self-Cleaning Rotary Drum Screens – Mechanical Pretreatment of Wastewater

What is a rotary drum screen?

A rotary drum screen is a pretreatment device used in municipal and industrial wastewater treatment plants. It enables the removal of solid materials from wastewater before biological or physico-chemical treatment stages.

The system operates as follows:

• A perforated stainless steel cylindrical drum
• Continuous rotation to capture retained solids
• An external scraper that automatically removes accumulated debris

Water flows through the drum by gravity, while the solids remain trapped on the surface and are mechanically discharged.

 

Advantages of Waste & Water Rotary Drum Screens

• Fully constructed in AISI 304L / 316L stainless steel
• Automatic and self-cleaning operation
• Minimal maintenance requirements
• Compact design, ideal for limited space installations
• Low energy consumption
• Suitable for effluents containing fibers, fats, and fine particles

 

Industrial Applications

Rotary drum screens are typically installed at the head of treatment lines in:

• Municipal wastewater treatment plants
• Industrial water treatment facilities
• Tanneries
• Industrial laundries
• Slaughterhouses and food processing plants
• Pulp and paper mills, textile factories
• Plastic recycling units
• Aquaculture (fish farming)
• Chemical and pharmaceutical industries

 

Standard Models

Model	Flow Rate (m³/h)	Frame (Inox)	Drum (Inox)	Dimensions (L×W×H)	Drum Diameter
WW-ROT/05/IS	5	SS304/316	SS304/316	3.0 × 1.2 × 1.5 m	500 mm
WW-ROT/10/IS	10	SS304/316	SS304/316	4.0 × 1.2 × 2.0 m	650 mm
WW-ROT/20/IS	20	SS304/316	SS304/316	5.8 × 2.1 × 2.0 m	800 mm
WW-ROT/40/IS	40	SS304/316	SS304/316	6.5 × 2.1 × 2.2 m	1000 mm

Custom versions available on request (alternative dimensions, mesh sizes, or discharge types)

 

Why Choose Waste & Water?

Our rotary drum filters are designed for easy integration into both new and existing installations.

We provide:

• Fast delivery and on-site installation
• Technical assistance during commissioning
• Long-term maintenance contracts
• Leasing and financing options upon request

 

FAQ – Self-Cleaning Rotary Drum Screens

💬 What is the typical mesh size for a rotary drum screen?

We offer mesh sizes ranging from 0.25 mm to 3 mm, depending on effluent type and required separation performance.

 

💬 Is drum cleaning done manually?

No. All of our models are fully self-cleaning, thanks to a built-in high-pressure spray system and mechanical scraper.

 

💬 What is the average lifespan of a rotary drum screen?

With regular maintenance, the lifespan can exceed 15 years, due to the use of high-quality stainless steel components.

 

💬 Can it be used with greasy or highly loaded water?

Yes. Our drum screens are designed to withstand fats, organic matter, and fibrous solids. They are well-suited to challenging applications such as slaughterhouses or textile industries.

 

💬 Can the drum operate continuously 24/7?

Absolutely. The system is engineered for continuous, uninterrupted operation, making it ideal for industrial facilities running on permanent production cycles.