Manual Overview

Channel Micro-Filter Operation Manual

(Applicable to Drum-Type Stainless Steel Screen Channel Micro-Filters)

I. Equipment Overview

1. Purpose

Used in water treatment systems (such as sewage pretreatment and circulating water filtration) to intercept suspended solids, particles, fibers, and other impurities larger than 80–100 μm, achieving solid–liquid separation and ensuring effluent quality.

2. Working Principle

The drum-type micro-filter is a non-pressurized mechanical filtration device:
Water flows naturally through the channel into the drum filter screen (internal feed for box-type models; external feed for insert-type models). The screen mesh (80 μm and above) intercepts solid impurities in the water.
The drum is driven at low speed by the transmission system. When intercepted impurities rotate to the area above the water surface, they are washed off by high-pressure backwash nozzles (fan-shaped jets).
The impurities are collected and discharged through the sludge trough, accomplishing continuous solid–liquid separation.

3. Equipment Advantages

• Non-pressurized compatibility: Can be directly installed in natural water channels without additional booster equipment, reducing energy consumption.
• Low maintenance cost: Compact design, easy operation, supports automatic mode with minimal manual intervention.
• Excellent material compatibility: Housing available in PP/PE/PVC or stainless steel 304/316 for freshwater, seawater, and various media.
• Stable filtration efficiency: Equipped with backwash cleaning to prevent clogging and maintain consistent filtration performance.
• High customization flexibility: Filtration capacity can be tailored to tank volume and flow rate; supports manual/automatic mode switching.

4. Application Fields

• Aquaculture: Prefiltration in RAS systems to remove feed residues, feces, and other impurities, maintaining clean water.
• Wastewater Treatment: Municipal/industrial wastewater pretreatment to intercept fibers and suspended solids, reducing the load on downstream equipment.
• Circulating Water Systems: Industrial cooling water and landscape water filtration to prevent pipeline or equipment clogging.
• Other Industries: Waterworks pretreatment, food processing wastewater with small solid content.

5. Key Components (Refer to Attached Photos)

• Drum Filter Screen: Stainless steel, core component for solid interception.
• Transmission System: Drives the drum at low speed.
• Backwash System: Fan-shaped nozzles for high-pressure cleaning.
• Control Panel: Manages start/stop and monitors operating status.

II. Preparations Before Operation

1. Component Inspection

◦ Ensure the drum filter screen is undamaged and free from residual debris.
◦ Check that transmission components (gear, belt) are free of obstructions, and spray nozzles are not clogged.
◦ Verify that all fasteners are tightened and the machine frame is stable.

2. Status Confirmation

◦ Channel inlet valve should be closed; water level must meet startup requirements (drum submerged to approx. 2/5 of its diameter).
◦ Transmission gears and roller bearings must be properly lubricated.
◦ Power cables must be firmly connected, and the control panel switch must be in the OFF position.

III. Startup Procedure

Switch on the main power supply and turn on the control panel; ensure indicator lights are on.
Start the drum drive motor and confirm the drum rotates correctly (opposite to water flow) and without abnormal noise.
Turn on the backwash system and adjust water pressure to ensure uniform nozzle spray.
Slowly open the channel inlet valve; adjust inlet flow to the rated level (refer to the nameplate).
Once outlet flow is stable and leakage-free, the system enters normal operation.

IV. Operation Monitoring

Check the following every hour:
• Drum rotation: Smooth speed, no jamming or abnormal noise.
• Backwash system: Stable pressure, no heavy debris accumulation on the screen.
• Effluent quality: Clear effluent without visible suspended solids.
• Equipment condition: No overheating of motors/bearings; no water or oil leakage.

V. Shutdown Procedure

Close the channel inlet valve to stop water inflow.
Allow the drum and backwash system to continue running for 5–10 minutes to fully clean residual impurities.
Turn off the backwash system, then stop the drum drive motor.
Switch off the control panel and the main power supply.
Clean the collected sludge and ensure no standing water remains on the equipment surface.

VI. Routine Maintenance

| Maintenance Cycle | Task |
| ----------------- | ---- |
| Daily | Clean remaining debris from the screen after operation; check effluent quality. |
| Weekly | Clean nozzle blockages; check belt tension. |
| Monthly | Lubricate roller bearings; inspect screen for damage. |
| Quarterly | Replace lubrication oil for transmission gears; fully clean exterior. |
| Annually | Disassemble and inspect core components; replace worn seals and damaged screens. |

VII. Common Faults & Troubleshooting

| Issue | Possible Cause | Solution |
| ----- | -------------- | -------- |
| Drum not rotating | Power failure / damaged contactor | Check fuse, replace contactor |
| Poor filtration | Screen blockage/damage; insufficient backwash pressure | Clean/replace screen; increase water pressure |
| Low backwash pressure | Pump failure / nozzle blockage | Repair pump; clean nozzles |

VIII. Safety Precautions

Do not touch the drum or transmission components while the equipment is running to avoid entanglement hazards.
Power must be disconnected before any maintenance or cleaning to prevent electric shock.
Wear insulated protective gear when operating in damp environments to avoid motor short circuits.

This section provides comprehensive documentation for all products in the Channel Microfiltration Machine category. Please select a specific product below to view its detailed manual.