Commercial Application of an innovative membrane bioreactor for waste water treatment at Glanbia Ingredients Ltd. Ballyragget Site Presented by: Karen Kennedy. Product Portfolio 2001. Butter32,833 Cheese14,628 Rennet Casein 9,845 Acid Casein 6,097 Lactose16,922
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Commercial Application of an innovative membrane bioreactor for waste water treatment at Glanbia Ingredients Ltd. Ballyragget SitePresented by: Karen Kennedy
Development of the New Process Technology
Waste Water Treatment
Acid Whey Wash Water
Diverted from effluent to Cooling Line
Off Site Treatment
Whey Gemini Plant
Recycled as Boiler Feed Make Up Water
Recover & use as pre-rinse for membrane CIP
PreRinse in Whey CIP’s, evaps, tanks, silos etc.
2nd Stage Condensate Polishing
Conventional Technology 98.6%
Kubota Technology 99.5%
(to further treatment)
Principle of Operation
Effluent ex oxidation Ditch
The Kubota membrane bioreactor is essentially a high MLSS activated sludge process where the Kubota membrane treatment units are submerged within the extended activated sludge tanks. Typically, the activated sludge is maintained in the range 15 – 20,000 mg/l MLSS.
In operation, the treated effluent through the membrane units is controlled by available gravity head (typically 1 – 1.5 metres).
The number of units installed is dependant on the maximum flow rate required. The plant at Ballyragget comprises 74 packs for a guarantee flow rate of 7,300 m3 per day. However, it is hoped that flow rates of 9,0003 per day will be achieved.
The Filtration Spectrum
River Nore (Downstream) = Q4 Unpolluted
Improvements in Suspended Solids
Improvements in Biological Oxygen Demand
Improvements in Ortho P
Feed 7-9000 m3/d
ExistingOxidation ditch (13000 m3)
16 t/d BOD
Existing settlement tanks
Kubota membrane units