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BioDryer Documentation

website·Indexed 33 days ago

https://biodryer-documentation.bioforcetech.com

Technical manual and operational guide for the BioDryer system, covering HMI access, automation network architecture via Modbus TCP/IP, and detailed maintenance schedules. Includes procedures for preventative maintenance (bi-weekly to two-year intervals), corrective maintenance for components like sludge gate sensors and blower motors, safety protocols, and troubleshooting for system alarms such as ERR_POD_PANEL and ERR_ROTATION.

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What's inside BioDryer

  1. Overview of BioDryer Monthly Maintenance Schedule

    The monthly maintenance for a BioDryer is estimated to take approximately 210 minutes (3.5 man-hours) of downtime per unit. This estimate includes operations from prior time periods. Key monthly tasks include:

    TaskEstimated TimeLOTO Required
    BioDryer Gates Cleaning1 hourYes
    Visual Inspection of Automatic Greaser0.25 hoursNo
    Water Pump Visual Inspection and Filter Cleaning0.5 hoursYes
    Foul Air Filter Inspection and Cleaning1 hourYes
    Pneumatic Air system Inspection0.5 hoursNo

  2. Three-month BioDryer maintenance schedule overview

    The three-month maintenance interval requires approximately 6 hours (360 minutes) of total downtime per BioDryer. This estimate includes operations from prior time periods.
    TaskTime EstimateLOTO Required
    Drive Wheel Bearings Inspection and Greasing0.5 hoursYes
    Rotation test and inspection1 hourNo
    Reactor Body Visual Inspection0.5 hoursNo
    Intake Filter media replacement0.5 hoursYes

  3. Initiate the BioDryer loading process

    To start the BioDryer loading process after configuration:

    1. Navigate to the Process Overview tab in the HMI interface.
    2. Click on Request Load.

    The system will move to the load position and signal the dewatering system. It will automatically transition to the drying cycle once the pre-set load goal weight (e.g., 9000 kg) is reached.

  4. Understand the BioDryer batch processing cycle

    The BioDryer operates on a batch processing principle consisting of three primary steps:

    1. Loading: Biosolids are loaded into the system (typically 4 to 8 tons per batch).
    2. Drying Cycle: Material undergoes drying for 48 to 72 hours. Operators can choose between a standard mesophilic cycle (routine) or an 'eco-mode' thermophilic cycle (energy-efficient, higher temperatures).
    3. Unloading: Dried material with reduced moisture and volume is unloaded for disposal or utilization.

  6. Stop loading, unloading, or drying operations in Auto Mode

    Active cycles (loading, unloading, or drying) can be stopped using two methods:

    1. HMI Interface: In the Process Overview tab, click the corresponding toggle button for the active cycle.
    2. Physical Interruption: Press and hold the red emergency button on the air skid junction box for at least 6 seconds.

  10. Six-Month BioDryer Maintenance Schedule Overview

    The six-month maintenance interval for a BioDryer requires an estimated total of 735 man-minutes (12.25 hours) of downtime. This estimate includes operations from prior time periods and the current six-month tasks. Key operations include:

    • Air-to-Air Heat Exchanger Inspection and Cleaning: 2 hours (LOTO Required)
    • Condensate Water Pump Inspection: 0.25 hours (LOTO Not Required)
    • Loading Screw Interior Visual Inspection: 1.25 hours (LOTO Required)
    • Loading Screw Discharge Gates Inspection: 0.5 hours (LOTO Required)
    • Loading Screw Gearbox Visual Inspection: 0.25 hours (LOTO Not Required)

  11. Navigate the HMI Interface components

    The HMI is organized into four primary functional areas:

    1. Equipment Menu (Left Sidebar): Used to switch between different equipment (e.g., 'BioDryer 1', 'BioDryer 2'), view the 'Plant Overview', access 'Charts' for data analysis, and log out. It also contains a response time indicator showing connection strength to the control panel.
    2. Top Right Slide-out Panel: Used for detailed management, including inputting process temperature setpoints, cleaning cycle timing, and auto-load configurations. It contains buttons to access the Alarms list and Informational messages.
    3. Central Dashboard: The main hub for real-time sensor readings and operational status. It contains three toggleable tabs:
      • Process Overview: High-level summary of current operations.
      • Data Details: In-depth analytics and sensor data.
      • Manual Operations: Interface for manual control of the BioDryer.
    4. Fixed Data Panel (Left Side): Displays critical, always-visible status information regardless of the active tab, such as current position, rotation direction, and sludge gate status.

  12. Monitor BioDryer status via the Process Overview tab

    The Process Overview tab serves as the central hub for monitoring and operating the BioDryer. Key monitoring components include:

    • BioCycle: Toggle to start or stop the drying cycle.
    • Goal Weight: Target end weight for the cycle (auto-set or manually adjusted).
    • Estimated Drying Time: Countdown to cycle completion.
    • Calculated Moisture: Average moisture content of biosolids.
    • Load/Unload Functions: Controls to activate loading and unloading processes, including their respective Goal Weights.
    • Weight Gauge: Visual indicator of current weight, including color zones and water loss rate (kg/h).
    • Airflow: Air flow rate into the BioDryer (m³/h).
    • Energy Usage: Live electrical (kW) and thermal (kWt) energy readings; optimal range is indicated by the needle in the orange zone.
    • Pressure Gauges: Inlet and outlet pressure; optimal pressure is indicated by the needle in the blue zone.
    • Air Temperatures: Inlet and outlet temperatures; optimal range is indicated by the needle in the orange zone.