Overview

The EcoGuardian™ BWMS (Ballast Water Management System), developed by HANLA IMS Co., Ltd., is engineered to meet IMO and USCG regulations for managing and treating ballast water. This system prevents the transfer of invasive aquatic species and pathogens by utilizing a combination of filtration and electrochlorination during ballasting, and neutralization during de-ballasting.

1. System Overview (p.9-15)

• Ballasting Process: Removes large organisms via an Auto Filter Unit (AFU) and applies hypochlorous acid generated by the ElectroChlorination Unit (ECU). The Total Residual Oxidants (TRO) are carefully monitored and controlled (p.10).
• De-ballasting Process: The treated ballast water is neutralized by the Neutralization Unit (NEU) before overboard discharge, ensuring residual TRO levels are below regulatory thresholds (p.11).
• By-pass Process: Provides a manual by-pass option in emergency conditions, with automatic alarms and event logging (p.11).
• A.P.Tk Process: Special procedures for the After Peak Tank (A.P.Tk) operations with adjusted alarm thresholds (p.12).
• System Specifications:
  • Capacity: 130m³/h to 6,000m³/h
  • TRO Target: 8 mg/L during ballasting
  • Compliant with IMO D-2 and USCG regulations (p.13).
• Power Consumption: Varies by model, maximum consumption up to 1,032.7 kW (p.14).
• Flow Rates: Model-specific minimum and maximum flow rates detailed on p.15.

2. System Components (p.16-20)

• AFU (Auto Filter Unit): Filters and automatically backflushes to prevent clogging (p.16).
• ECU (ElectroChlorination Unit): Generates and injects hypochlorous acid during ballasting. Operates with small seawater intake and hydrogen gas management (p.17).
• NEU (Neutralization Unit): Automatically injects sodium thiosulfate to neutralize residual TRO during de-ballasting (p.17).
• TSU (TRO Sensor Unit): Continuously monitors and controls TRO concentration (p.18).
• Control System & Power Distribution: Operated via Main Control Panel (MCP) and optional Remote Control Panel (RCP). Includes alarms, logs, and monitoring (p.19).

3. Operation (p.21-36)

• Ballast Mode: Step-by-step procedures with specific settings for A.P.Tk tanks (p.23-26).
• De-ballast Mode: Procedures for neutralizer injection and system shutdown (p.27-28).
• By-pass Mode: Manual by-pass for both ballasting and de-ballasting in emergencies (p.29-30).
• Maintenance Mode: Manual operation of system components for maintenance purposes (p.31).
• HMI Screens: Includes BWTS system overview, maintenance, ballast, de-ballast, and alarm history screens (p.32-36).

4. Alarms & Troubleshooting (p.37-46)

• Alarm Types: Warnings and shutdowns categorized by severity and system mode (p.37).
• Alarm List: Includes flow issues, hydrogen gas detection, temperature and pressure deviations, and communication failures (p.38-39).
• Troubleshooting: Detailed solutions provided for common faults and system errors (p.41-46).

5. Maintenance (p.47-48)

• Safety Precautions: Follow electrical and mechanical safety procedures. Use PPE when handling chemicals (p.47).
• Inspection Schedule: Regular checks on filters, pumps, valves, and sensors are mandatory for optimal performance and regulatory compliance (p.47).

Key Specifications (p.13-15)