Rotary Drum Screen Filter for Wastewater Screening System

Rotary Drum Screen Filter Product Introduction

The Rotary Drum Screen Filter is a high efficiency mechanical filtration equipment used for industrial wastewater and domestic sewage pretreatment. It adopts an internal feed design where influent enters the rotating drum and is distributed onto a fine screen surface for solid-liquid separation. The system effectively removes particles larger than 0.2 mm, improving water quality and protecting downstream processes. It is widely applied in municipal wastewater treatment plants, industrial filtration systems, reverse osmosis pretreatment, cooling water circulation, irrigation systems, and process water purification applications.

Working principle

Step 1: Inlet Feeding
Wastewater enters the Rotary Drum Screen Filter through the internal feed inlet and flows into the drum chamber.

Step 2: Flow Distribution
The influent is evenly distributed onto the inner surface of the rotating drum through a distribution weir.

Step 3: Filtration Process
Water passes through the 0.2 mm fine screen openings while suspended solids are retained on the screen surface.

Step 4: Solid Separation
Solid particles accumulate on the drum surface and are continuously lifted as the drum rotates.

Step 5: Discharge & Cleaning
Separated solids are discharged by gravity or mechanical scraping, while filtered water exits for further treatment or reuse.

Step 6: Continuous Operation
The system operates continuously, ensuring stable filtration performance and reduced clogging risk in long-term operation.

Product Parameter Table

Handling capacity	50-80 m³/h
Dia. of drum screen	800 mm
Length of drum screen	1700 mm
Total length	2800 mm
Total height	960 mm
Height of fixed leg	500 mm
Spacing of fixed leg	600 mm
Power	1.1 kW

Main Features

• Internal feed rotary drum design ensures stable and continuous fine screening performance
• High efficiency filtration removes suspended solids larger than 0.2 mm effectively
• Suitable for municipal, industrial, agricultural, and process water treatment systems
• Reduces clogging and improves efficiency of downstream wastewater treatment processes
• Continuous rotation mechanism provides stable hydraulic performance and low maintenance
• Widely used in RO pretreatment, cooling water, irrigation, and industrial filtration systems

Application Scenarios

• Municipal wastewater treatment plant primary and secondary pretreatment filtration systems
• Industrial wastewater treatment in chemical, petroleum, steel, textile, food, and paper industries
• Reverse osmosis, ion exchange, and water softening pretreatment systems
• Cooling water and circulating water filtration systems in industrial plants
• Agricultural irrigation, drip irrigation, and landscape water purification systems
• Oilfield reinjection water and process water solid-liquid separation applications

FAQ

1. What is a Rotary Drum Screen Filter used for?

It is used for removing suspended solids larger than 0.2 mm in wastewater pretreatment systems.

2. What industries use this equipment?

It is widely used in municipal, industrial, agricultural, and process water treatment industries.

3. What is internal feed design in a drum screen filter?

It means wastewater enters the drum interior and is distributed onto the screen surface for filtration.

4. Can it be used for RO pretreatment?

Yes, it is commonly used for reverse osmosis and other membrane system pretreatment.

5. What type of water can it treat?

It can treat municipal sewage, industrial wastewater, cooling water, irrigation water, and process water.

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