1 / 40

Water Services Training Group

Water Services Training Group. Regional Training Centre, Ballycoolin June 28 th 2011. Integrated Constructed Wetlands A Case Study, Glaslough, Co. Monaghan. Dan Doody Senior Engineer (Retired) Monaghan County Council. Glaslough Location Map. Glaslough Village.

lisandra-graham
Download Presentation

Water Services Training Group

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Water Services Training Group Regional Training Centre, Ballycoolin June 28th 2011

  2. Integrated Constructed WetlandsA Case Study, Glaslough, Co. Monaghan Dan Doody Senior Engineer (Retired) Monaghan County Council

  3. Glaslough Location Map

  4. Glaslough Village

  5. ICW at Glaslough, Co. Monaghan

  6. Glaslough • Why an Integrated Constructed Wetland?

  7. Glaslough • New Treatment Works Required • Pre 2001 – ‘Combined’ collection system delivered effluent to a 1940’s plant (discharging to Glaslough Stream) - overloaded. MCC prosecuted by ERFB • Preliminary Report by Nicholas O’Dwyer 1989 350pe IR£205k Jan 2002 650pe €950K (2008 650pe €1.5m)

  8. Glaslough • 2001 Discharge Pipework Extended • Temporary FM Environmental Package Plant (350pe) installed discharging to the Mountain Water River

  9. Glaslough/Castle Leslie ICW • May 2003 – Dr Rory Harrington, DEHLG & Paul Carroll, Waterford Co Co (invited by Billy Moore, Co Eng MCC) – Presentation in Monaghan on ICWs • Aug 2003 – Samantha Leslie, Dan Doody & Mark Johnston MCC – Field trip to Anne Valley in Waterford to view working ICWs

  10. Glaslough/Castle Leslie ICW DEHLG Funding Measures • Small Schemes pre 2007 €635k post 2007 €1m • Major Schemes pre 2007 over €635K post 2007 over €1m

  11. Glaslough/Castle Leslie ICW • Major Scheme Measures – Priority to larger towns (Monaghan, Carrickmacross, Castleblayney, Clones, & Ballybay) • Small Schemes Solution Sought – Capital Cost less than €1m – ICW??

  12. Glaslough/Castle Leslie ICW • Single major issue – Effluent Quality • Castle Leslie – Land Ownership, Amenity Value & Use (related to Castle/Hotel & Equestrian Centre)

  13. Glaslough/Castle Leslie ICW • 2004 – 2006 Design, Land Lease, Tree felling, Part 8 Planning, Site Investigation, Tender Docs. • Oct 2006 Construction commenced (Contractor Eamon Sherry)

  14. Glaslough/Castle Leslie ICW • Q2 – Q3 2007 Earthworks, Planting (by Aila Carty, Vesi Environmental, Little Island, Cork) Ductwork, Cabling, Sampling & Monitoring Equipment) • 26th Oct 2007 ICW Commissioned. • 2008 Finishing Works, Riding Trails etc.

  15. Glaslough/Castle Leslie ICW • Design 1750pe • (Current Load 1400pe) • Footprint Area 6.74ha • Water Surface Area 3.25ha • Capital Cost €770k Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009

  16. Costs for Glaslough ICW • Total cost including land €770k • Less monitoring €144K • Less exceptional costs, riding trails, bridges etc €220k • Net cost of wetland €406k Budget cost for conventional waste treatment plant for 650pe is €1.5m

  17. PLAN OF ICW

  18. Glaslough ICW - POND 1

  19. Glaslough ICW - POND 1

  20. Glaslough ICW - POND 1

  21. Glaslough ICW - POND 1

  22. Glaslough ICW - POND 1

  23. Right: Eamon De Butlier with Dr. R. Harrington Left: Minister Gormely visits ICW, June 2008

  24. PLAN OF ICW

  25. Stroll from Castle Leslie to… Integrated Constructed Wetland

  26. Equestrians using Riding Trails on Embankments of Ponds

  27. Monitoring equipment.

  28. SCADA layout of ponds

  29. Performance of Glaslough ICW NOTE: In the Consultation Paper on Environmental Objectives (Surface Water ) Regulations 2008 the level of Molybdate Reactive Phosphorus in river water body is 0.025 mgP/l for High Status and 0.035 mg p/l for Good Status. *UWWD = Urban Waste Water Directive

  30. Discharges Glaslough ICW ‘The Pure Drop’ (Autumn 2010) No Discharge (1 May 2011)

  31. Quality of Receiving Waters *UWWD = Urban Waste Water Directive

  32. ICW Coliform Results (20/01/09) Leixslip raw water – total coliforms/100mls: Range 52 to 41,000 for 2008 – faecal coliforms/100mls: Range 8 to 17,200 for 2008

  33. Comparison ICW Glaslough (1750pe) vEmyvale (2000pe) *UWWD = Urban Waste Water Directive

  34. Conclusion The discharge from the ICW in Glaslough not only complies with the UWWD but improves the quality of the receiving waters. Average removal efficiency for key parameters > 97 % A consistently good effluent quality Low operating and maintenance costs Positive feedback from public & Castle Leslie Keen interest (Nationally & Internationally) from Industry Professionals

  35. Contact Information • danjdoody@gmail.com • Tel. 047 88811 • Mob. 087 6470832

More Related