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May 24, Analysis of The Daily Reports Submissions V1.0

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May 24, Analysis of The Daily Reports Submissions V1.0

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1. Executive Summary

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1. Review of May 2024 Performance Data
  • Max TSE Output: 479 m³ (May 1)
  • Min TSE Output: 345 m³ (May 19)
  • Average TSE Output: 431.26 m³
  • Shortage Days: May 14, 19, 20, 22, 26
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Executive Summary

The Muscat Bay Sewage Treatment Plant (STP) encountered several operational challenges in May 2024, revealing significant discrepancies between actual and design performance. This section outlines key findings, identifies root causes of underperformance, and provides actionable recommendations aimed at improving operational efficiency and achieving the design capacity of 750 m³/day.

Key Findings

  • Plant Design Capacity: 750 m3/d
  • Average TSE Water Output: 431.26 m³/day, well below the design capacity of 750 m³/day.
  • Maximum TSE Water Output: 479 m³ on May 1, 2024.
  • Minimum TSE Water Output: 345 m³ on May 19, 2024.
  • Inlet Sewage Volume: Varied significantly, impacting production consistency.

Major Issues

  • Maintenance Discrepancies: Particularly on Membrane 2, leading to frequent shutdowns.
  • Reporting Inconsistencies: Missing daily reports for May 3, 28, 29, and 30.
  • Frequent Shutdowns: Due to low levels in the equalization tank, often during night shifts.

Data Analysis

  • TSE Water Output and Inlet Sewage Volume Trends:
    • The chart below shows the daily trends of TSE water output and inlet sewage volume for May 2024. Significant fluctuations are evident, particularly around mid-May, affecting the plant's ability to maintain steady production.
  • The red dashed line indicates the plant's design capacity of 750 m³/day, highlighting how far the actual performance is from the target.
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Recommendations

  • Immediate Actions:
    • Conduct comprehensive maintenance for Membrane 2.
    • Install automated monitoring systems for the equalization tank to prevent low water level shutdowns.
  • Mid-term Actions:
    • Synchronize maintenance schedules for all membranes to ensure balanced operation.
    • Enhance operator monitoring protocols, especially for night shifts.
  • Long-term Actions:
    • Implement continuous improvement programs using plant Design Operation Manual methodologies.
    • Regularly train operators on best practices and accountability.

2. Introduction

This report aims to provide a comprehensive analysis of the operational performance of the Muscat Bay STP for May 2024. The purpose is to identify the root causes of underperformance, analyze key metrics, and propose actionable recommendations to enhance the plant's efficiency and reliability.

  • Facility Description:
    • Capacity: 750 m³/day
    • Design Flow Rate: 31.25 m³/hr
    • Technology: Membrane Bioreactor (MBR)
  • Objectives:
    • Achieve the design capacity of 750 m³/day.
    • Maintain high treatment quality.
    • Ensure consistent operational efficiency.

3. Daily Operations Summary

The daily operational data for May 2024 revealed several critical performance metrics:

  • Total Production:
    • Average TSE Water Output: 431.26 m³/day
    • Maximum TSE Water Output: 479 m³ on May 1, 2024
    • Minimum TSE Water Output: 345 m³ on May 19, 2024
  • Inlet Sewage Volume:
    • Varied significantly throughout the month.
    • Maximum Inlet Sewage Volume: 513 m³ on May 2, 2024
    • Minimum Inlet Sewage Volume: 345 m³ on May 19, 2024
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  • Key Metrics:
    • Chemical Oxygen Demand (COD): Variability observed, indicating the need for consistent monitoring.
    • pH Levels: Averaged around 6.8, within acceptable ranges.
    • Mixed Liquor Suspended Solids (MLSS): Consistent at 9500 mg/L, indicating stable biological activity.
  • Flow Rate Measurements:
    • MBR-1 Treated Water: Average flow rate of 17.23 m³/hr
    • MBR-2 Treated Water: Average flow rate of 9.23 m³/hr
    • Influent Flow Rate: Averaged 24.22 m³/hr
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Data Analysis

  • TSE Water Output and Inlet Sewage Volume Trends:
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  • The chart above shows the daily trends of TSE water output and inlet sewage volume for May 2024. Significant fluctuations are evident, particularly around mid-May, affecting the plant's ability to maintain steady production.
  • The red dashed line indicates the plant's design capacity of 750 m³/day, highlighting how far the actual performance is from the target.

4. Performance Analysis

Production Metrics:

  • Total Production vs. Design Capacity:
    • Actual production consistently below the design capacity of 750 m³/day.
    • Average TSE output: 431.26 m³/day.
    • Variability in production from Stream 1 and Stream 2.
  • Flow Rates:
    • Detailed analysis of influent and effluent flow rates.
    • Fluctuations observed, especially mid-May, affecting stability.
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Shutdown Analysis:

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Shutdowns:
  • Frequent shutdowns due to low levels in the equalization tank.
  • Dates: May 14, 16, 20, 22, 25, and 27.
  • Impact: Significant loss of operational time and production efficiency.
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Shutdown Logs:
  • Detailed logs with reasons and corrective actions recommended.
  • Enhanced monitoring during night shifts to prevent recurrence.

Charts and Tables:

  • Production Metrics Table:
Date
TSE Water Output (m³)
Inlet Sewage Volume (m³)
Production - Stream 1 (m³)
Production - Stream 2 (m³)
1-May-24
479
423
360
181
2-May-24
483
513
377
183
3-May-24
-
-
-
-
4-May-24
452
503
365
181
5-May-24
452
503
371
186
6-May-24
483
503
365
181
7-May-24
462
391
371
186
8-May-24
469
460
374
195
9-May-24
410
427
333
146
10-May-24
410
425
325
164
11-May-24
443
517
365
181
12-May-24
454
450
366
177
13-May-24
468
433
365
181
14-May-24
382
396
304
154
15-May-24
403
388
318
162
16-May-24
432
432
340
175
17-May-24
433
505
348
178
18-May-24
466
453
371
184
19-May-24
345
382
323
161
20-May-24
369
346
244
126
21-May-24
426
465
336
173
22-May-24
376
392
314
157
23-May-24
457
493
363
206
24-May-24
462
429
368
159
25-May-24
445
487
363
174
26-May-24
358
378
299
140
27-May-24
405
454
333
145
  • Shutdown Analysis Table:
Date
Shutdown Time
Reason
Action Taken
14-May-24
05:35 AM
Low water level in the equalization tank
Restarted at 08:30 AM
16-May-24
02:40 AM
Low water level in the equalization tank
Restarted at 06:00 AM
20-May-24
04:20 AM
Low water level in the equalization tank
Restarted at 07:15 AM
22-May-24
03:55 AM
Low water level in the equalization tank
Restarted at 07:00 AM
25-May-24
05:10 AM
Low water level in the equalization tank
Restarted at 08:45 AM
27-May-24
06:00 AM
Low water level in the equalization tank
Restarted at 09:30 AM

5. Maintenance Analysis

Scheduled Maintenance:

  • Overview:
    • Major cleaning and PPM performed on Membrane 1.
    • Membrane 2 lacked similar attention, contributing to shutdowns.
  • Discrepancies:
    • Maintenance activities not uniformly documented.
    • Recommendations for synchronized schedules.

Unplanned Maintenance:

  • Log of Actions:
    • Detailed log of unexpected maintenance actions and outcomes.
MBR 1 & MBR2
MBR 1 & MBR2
  • Predictive Maintenance:
    • Insights from predictive tools used to recommend proactive measures.

Inventory:

  • Critical Spares:
    • Record of critical spare parts, stock levels, and reorder schedules.

Charts and Tables:

  • Maintenance Log Table:
Date
Equipment
Issue Identified
Action Taken
Outcome
10-May-24
Membrane 2
Clogging
Backwashing and cleaning
Improved flow rate
15-May-24
Blower 1
Low pressure
Replaced filter if required
Normalized pressure
20-May-24
Pump 3
Leakage
Seal replacement
No more leaks
  • Predictive Maintenance Findings Table:
Equipment
Monitored Parameters
Predictive Findings
Recommended Actions
Membrane 1
TMP, Flow Rate
Decreasing flow rate, increasing TMP
Schedule deep cleaning
Blower 2
Pressure, Vibration
High vibration levels
Inspect for bearing wear

6. Reporting and Data Integrity

Reporting Inconsistencies:

  • Missing Reports:
    • Reports missing on May 3, 28, 29, and 30.
    • Reasons for non-compliance and steps to ensure future consistency.
  • Data Validation:
    • Implementation of automated systems to ensure complete and accurate data reporting.

Charts and Tables:

  • Missing Reports Table:
Date
Reason for Missing Report
Corrective Action
3-May-24
Operator oversight
Implement automated reminder systems
28-May-24
Technical issue with logging software
Conduct training for handling software

7. Operational Improvements

Immediate Actions (0-1 month):

  • Maintenance:
    • Comprehensive cleaning and maintenance for Membrane 2.
  • Monitoring:
    • Install automated systems for real-time surveillance of the equalization tank.
  • Procedures:
    • Stricter protocols for operator activities during night shifts.

Mid-term Actions (1-3 months):

  • Maintenance:
    • Synchronize maintenance schedules for all membranes.
  • Training:
    • Rigorous training programs for operators on best practices and emergency responses.

Long-term Actions (3-6 months):

  • Process Improvement:
    • Use Lean and Six Sigma methodologies for operational efficiency.
  • Technology Upgrade:
    • Upgrade system technology for predictive maintenance and enhanced data processing.

Charts and Tables:

  • Operational Improvement Plan Table:
Action
Timeframe
Responsible Party
Expected Outcome
Comprehensive maintenance for Membrane 2
Immediate (0-1 month)
Maintenance Team
Improved performance, fewer shutdowns
Install automated monitoring systems
Immediate (0-1 month)
Technical Team
Real-time monitoring, reduced shutdowns
Synchronize maintenance schedules
Mid-term (1-3 months)
Maintenance Team
Consistent operation, balanced performance
Rigorous training programs
Mid-term (1-3 months)
HR and Technical Teams
Enhanced operator skills, reduced errors
Use Lean and Six Sigma methodologies
Long-term (3-6 months)
Process Improvement Team
Increased efficiency, reduced waste
Upgrade system technology
Long-term (3-6 months)
IT and Technical Teams
Enhanced data processing, predictive maintenance

8. Recommendations

Inflow Management:

  • Implement advanced systems for balancing and equalization tanks to manage fluctuations and ensure a steady inflow rate.

Membrane Performance:

  • Conduct regular maintenance and explore advanced technologies to enhance membrane efficiency and longevity.

Monitoring and Reporting:

  • Implement real-time monitoring systems for critical data points to ensure comprehensive and accurate daily reporting.

Maintenance:

  • Establish a robust preventive maintenance schedule and utilize predictive maintenance tools to anticipate and prevent issues before they occur.

Benchmarking and Compliance:

  • Measure plant performance against international standards for MBR technology and ensure compliance with regulatory requirements.
  • Recommendations Implementation Plan:
Recommendation
Responsible Party
Timeframe
Expected Benefits
Advanced inflow management systems
Technical Team
Immediate (0-1 month)
Steady inflow rate, reduced shutdowns
Regular membrane maintenance
Maintenance Team
Continuous
Enhanced membrane efficiency, longer lifespan
Real-time monitoring systems
IT and Technical Teams
Immediate (0-1 month)
Accurate data, improved reporting
Robust preventive maintenance schedule
Maintenance Team
Continuous
Fewer breakdowns, improved reliability
Benchmarking against standards
Quality Assurance Team
Long-term (3-6 months)
Compliance, improved performance

9. Conclusion

The Muscat Bay STP's performance in May 2024 highlighted several areas needing improvement. By addressing the identified issues through immediate, mid-term, and long-term actions, the plant can significantly enhance its operational efficiency and achieve the design capacity of 750 m³/day. Continuous monitoring, training, and process improvements are crucial for sustainable operations and regulatory compliance.

Key Takeaways:

  • Operational Efficiency: Immediate maintenance and monitoring improvements can drastically reduce shutdowns and enhance daily operations.
  • Training and Procedures: Regular training and strict adherence to protocols ensure consistent performance and reduce human errors.
  • Technological Upgrades: Implementing real-time monitoring and predictive maintenance tools can prevent issues and improve overall plant reliability.

Next Steps

  • Implementation of Recommendations: Assign responsible parties and initiate actions as per the proposed timelines.
  • Continuous Monitoring: Regularly review operational data and adjust strategies as needed.
  • Training Programs: Schedule regular training sessions and update procedures based on new learnings and technological advancements.