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BIOSETTLER Prototype Progress Report Simon Murray QUESTOR ATU

BIOSETTLER Prototype Progress Report Simon Murray QUESTOR ATU. Introduction. Settlement. Treatment. Many wastewater treatment plants struggle to meet consents Settlers: Significant footprint within WwTW No significant further biological treatment. Improving settling.

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BIOSETTLER Prototype Progress Report Simon Murray QUESTOR ATU

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  1. BIOSETTLER PrototypeProgress ReportSimon MurrayQUESTOR ATU

  2. Introduction Settlement Treatment • Many wastewater treatment plants struggle to meet consents • Settlers: • Significant footprint within WwTW • No significant further biological treatment

  3. Improving settling • Surface area determines solids removal • Inclined plates boost settling area Settling area Inclined plates Footprint • Can we add biological treatment?

  4. Requirements • Settling • Calm – no mixing • Biological activity • Turbulent – good mixing • Bubble-free membrane aeration?

  5. Membrane Aerated Biofilms high oxygen - aerobic processes membrane biofilm Oxygen diffusion Substrate diffusion Low oxygen – anoxic/anaerobic processes

  6. Lab Scale Results • Oxygen mass transfer modelled • Pollutant removal studied • Waste designed to non compliant settler effluent • Good ammonia removal • Provides excellent niche for growth of nitrifiers

  7. Objectives Invest NI Proof of Concept Project • Objectives: • Construction of pilot-scale BIOSETTLER • Quantification of system advantages • Identification of commercialisation route • Patent applied for • priority date 20 Dec 2007

  8. Gantt Chart

  9. Microdyn – Nadir • Flat sheet – greater ease of operation • Hollow fibres – greater surface area/greater mechanical strength

  10. Prototype construction • Prototype tank • 1 m3 volume • Settling area: 5.2 m2 • Membrane area: 2 m2

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