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© ARPro 2024 – V1.5

May Daily Report Analysis

Date: June 6, 2024

Overview

This report provides a detailed analysis of the operational performance of the Muscat Bay Sewage Treatment Plant (STP) for May 2024. The primary goal is to identify the root causes of underperformance and propose actionable recommendations to reach the plant's design capacity of 750 m³/day. This integrated report covers maintenance discrepancies, tanker management, operator monitoring, flow rate inconsistencies, shutdown reasons, and missing reports.

Key Findings and Recommendations

1. Maintenance Work and Discrepancies

• Observation: Maintenance sections in daily reports were consistently empty. Major cleaning and Preventive Planned Maintenance (PPM) were performed on Membrane 1 but not on Membrane 2.
• Impact: Neglected maintenance activities contribute to plant shutdowns and reduced performance.
• Recommendations:
• Include detailed maintenance logs in daily reports to track the impact of maintenance on operations.
• Schedule and perform immediate PPM for Membrane 2 and implement a synchronized maintenance schedule for both membranes.

2. Missing Reports

• Observation: Reports were missing for May 3, 28, 29, and 30.
• Recommendation: Investigate the reasons for missing reports and ensure daily reports are consistently submitted. Implement an automated reminder system for report submissions.

3. Shutdowns and Operator Monitoring

• Frequent Shutdowns: Due to low water levels in the equalization tank.
• Shutdown Dates: May 14, 16, 20, 21, 22, 25, and 27.
• Recommendation: Include detailed shutdown logs in daily reports, specifying date, time, reason, duration, and actions taken. Improve operator accountability and install automated monitoring and alert systems.

4. Key Operational Parameters

• Parameters Analyzed:
• Total Production
• TSE Water Output
• Inlet Sewage Volume
• COD levels
• pH levels
• MLSS levels
• Number of Tankers Discharging
• Expected Tanker Volume
• Production from Membrane Streams
• Average Temperature
• Observation: Fluctuations observed, often falling short of the design capacity of 750 m³/day.
• Recommendation: Maintain consistent daily records and implement validation checks to ensure data completeness.

5. Flow Rate Measurements

• Flow Rates Analyzed:
• MBR-1 Treated Water
• MBR-2 Treated Water
• Total Treated Water
• TSE-Irrigation
• Influent Flow Rate
• Effluent Flow Rate
• Internal Process Flow Rates
• Observation: Variability in treated water flow rates for MBR-1 and MBR-2, affecting system stability.
• Recommendation: Regular maintenance and cleaning of membranes to prevent fouling and maintain optimal flow rates.

Detailed Operational Analysis

Total Production and TSE Water Output

• Example Data:
• May 1, 2024: 479 m³
• May 2, 2024: 483 m³
• May 4, 2024: 452 m³

Inlet Sewage Volume

• Example Data:
• May 1, 2024: 423 m³
• May 2, 2024: 513 m³
• May 4, 2024: 503 m³

Flow Rate Measurements

• Example Data:
• MBR-1 (May 1, 2024): 17.23 m³/hr
• MBR-2 (May 1, 2024): 9.23 m³/hr

Detailed Shutdown Analysis

Shutdown Mentions

Reports Without Explicit Shutdown Mentions

Missing Reports

Recommendations for Shutdowns and Missing Reports

• Standardize Shutdown Reporting: Ensure all shutdowns are explicitly mentioned in the daily reports with detailed reasons and exact restart times.
• Enhance Reporting Consistency: Review and update reporting templates to ensure completeness and accuracy. Conduct regular audits of daily reports.
• Improve Operational Coordination: Coordinate tanker discharges to maintain steady inflow rates and avoid low water levels in the equalization tank. Use real-time monitoring and automated controls.
• Investigate Missing Reports: Conduct an internal review to determine why reports for specific dates are missing. Implement a system to track and ensure the submission of daily reports.

Root Cause Analysis for Inflow Issues

Data Compilation for Shutdown Dates and Prior Days

Analysis Summary

• Observation: Significant drop in inlet sewage volume on the days of the shutdowns.
• Pattern: Consistent drop in inlet sewage volume suggests issues with inflow management, possibly due to irregular tanker discharges or blockages.

Recommendations for Inflow Management

1. Automate Monitoring: Implement automated monitoring and control systems to ensure consistent inflow rates. Conduct regular maintenance and inspections to identify and address blockages or restrictions in the inflow system.
2. Coordinate Discharges: Improve coordination and scheduling of tanker discharges to maintain a steady inflow to the plant. Use real-time data to adjust tanker schedules and inflow rates to prevent low water levels.

Conclusion

By addressing the identified issues and implementing the recommended actions, the Muscat Bay STP plant can improve its operational efficiency, maintain consistent data reporting, and ensure compliance with industry standards. Regular monitoring and optimization of key parameters will help achieve the design capacity and enhance overall plant performance.