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OPERATION and MAINTENANCE

OPERATION and MAINTENANCE. Paul Carroll Executive Scientific Officer Waterford County Council. Integrated Constructed Wetlands Awareness Seminar LASNTG Ballycoolin June 28 2011. Waterford Co Co Constructed Wetlands. Laboratory. Anne valley. 1990s sewage treatment CWs 9 CWs

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OPERATION and MAINTENANCE

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  1. OPERATION and MAINTENANCE Paul Carroll Executive Scientific Officer Waterford County Council Integrated Constructed Wetlands Awareness Seminar LASNTG Ballycoolin June 28 2011

  2. Waterford Co Co Constructed Wetlands Laboratory Anne valley 1990s sewage treatment CWs 9 CWs Future ICW developments

  3. Operation and Maintenance CHAPTER 7 • MAINTAIN SURFACE FLOW • MAINTAIN ACCESS • REMOVAL OF SEDIMENT

  4. MAINTAIN SURFACE FLOW • CLEAR PIPES & WATER DEPTH • 10 – 30 cm, • Avoid channelling and dry spots!

  5. MAINTAIN ACCESS • BANK WIDTH 4 metres • CUTTING OF BANK VEGETATION twice a year

  6. REMOVAL OF SEDIMENTS P-content kg/m3 ICW sediment 3 Cattle slurry 0.8 FYM 1.2

  7. ICW sediment Pond 1 7 cm per year 3.2 mg P/kg (dry wt) Ponds 2 & 3 1 cm per year 1.8 mg P/kg (dry wt)

  8. MONITORING • Influent – GAP Regs – BOD, DM • Effluent – BOD, nutrients, flow • Surface waters • Groundwaters Relevant parameters commensurate with ICW scale and risk to receptor.

  9. THANK YOU Acknowledge Susan Cook, Waterford Co Co, ICW Project Integrated Constructed Wetlands Awareness Seminar LASNTG Ballycoolin June 28 2011

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