Seafield WwTW Strategic Odour Review Summary

Summary of strategic odour review recommendations for Seafield Wastewater Treatment Works (WwTW) includes short-term, medium-term, and long-term measures such as operational improvements, communications enhancements, and site redevelopment strategies presented by Wood plc.

• Seafield
• Odour Review
• Wastewater Treatment
• Strategic Measures

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Presentation Transcript

1. Seafield WwTW Strategic Odour Review 28thSeptember 2018 woodplc.com

2. Check on Progress of Recommended Measures Implementation 2

3. Summary of March 2018 Report Recommendations 12 short-term measures Seafield & Network; 4 engineering feasibility studies Contingency dosing plan 2 ventilation & air balance flow investigations Intermediate wastewater treatment Wallyford Nutriox dosing H2S Monitoring Further septicity investigations Ropeworks vent chimney 3 A presentation by Wood. Seafield WwTW Check on Measures Implementation

4. Summary of March 2018 Report Recommendations 4 medium-term measures; Conversion of storm tanks Redevelopment of sludge cake building Additional sludge storage capacity Replace PSTs All dependent upon outcomes of engineering feasibility studies 4 A presentation by Wood. Seafield WwTW Check on Measures Implementation

5. Summary of March 2018 Report Recommendations 2 long-term measures; Vision & strategy for a re-developed, sustainable Seafield site Relocate wastewater and sludge treatment to a new location Both of the above also dependent upon outcomes of feasibility studies and other, wider Edinburgh-wide and national population growth matters 5 A presentation by Wood. Seafield WwTW Check on Measures Implementation

6. Summary of March 2018 Report Recommendations 7 operational improvement measures; Additional on-site H2S monitoring and limit values Annual odour emissions surveys Improved weather forecasting system HAZOP-type approach for process change odour risks Tanker driver odour awareness training Internal workshops to enhance OMP 6 A presentation by Wood. Seafield WwTW Check on Measures Implementation

7. Summary of March 2018 Report Recommendations 3 communications improvement measures; More interactive and meaningful web site Real-time odour dispersion model display Enhanced complaints handling & response system 7 A presentation by Wood. Seafield WwTW Check on Measures Implementation

8. What is the state of progress on these measures? 8

9. Summary of Progress Status September 2018 12 short-term recommendations; 1 completed (Wallyford); 8 have been commissioned and are under way, with reporting dates in October/November 2018; 1 assessed in detail and rejected (MEPS ferric dosing) 2 to be started (Ropeworks & further septicity surveys) 9 A presentation by Wood. Seafield WwTW Check on Measures Implementation

10. Summary of Progress Status September 2018 4 medium-term measures; All dependent upon the outcomes of engineering feasibility studies 10 A presentation by Wood. Seafield WwTW Check on Measures Implementation

11. Summary of Progress Status September 2018 2 long-term measures; Both in the early stages of pre-feasibility Dependent upon the outcomes of engineering feasibility studies and further consideration of Edinburgh-wide and national population growth and development 11 A presentation by Wood. Seafield WwTW Check on Measures Implementation

12. Summary of Progress Status September 2018 7 operational improvement measures; 1 completed (Tanker drivers training) 5 under way 1 under review (odour surveys) 12 A presentation by Wood. Seafield WwTW Check on Measures Implementation

13. Summary of Progress Status September 2018 3 communications improvement measures; All 3 under way 13 A presentation by Wood. Seafield WwTW Check on Measures Implementation

14. Summary of Progress Status September 2018 5 completed 17 in progress 6 to be commenced (4 dependent upon outcome of feasibility studies) 14 A presentation by Wood. Seafield WwTW Check on Measures Implementation

15. Additional Items Dosing trials with KMnO4 To be carried out at SWH facility at Bo ness Commencing 1/10/2018 for 4/5 weeks Further investigation of the sewer network around Seafield feeding-into the Siphon House Bow-Tie risk analysis of proposed process changes 15 A presentation by Wood. Seafield WwTW Check on Measures Implementation

16. Thank you 16 A presentation by Wood.