Enpure successfully demonstrates high rate DAF at pilot plant in USA.

The Roberts Filtration Group, based in Pennsylvania, USA, has recently completed a series of trials during August and September of last year utilising Enpure Ltd’s Enflo-DAF™ dissolved air flotation technology at the Lake Whatcom water treatment facility located just north of Seattle in Bellingham, Washington.  The trials at pilot scale demonstrated that at rates of up to ~49 m/h (20 gpm/ft²) consistently low turbidities of <0.5 NTU and algae removals of up to 90% were achieved

 The trials at pilot scale demonstrated that at rates of up to ~49 m/h (20 gpm/ft²) consistently low turbidities of <0.5 NTU and algae removals of up to 90% were achieved.

 The trials overseen and directed by CH2M HILL were intended to demonstrate both turbidity and algae reduction using alum and polymer at flocculation times of 5-8 minutes.  In addition, utilising dual media filters comprising ~280mm (11”) of sand and 800mm (31”) of anthracite with an effective size of ~0.5mm and 1.1mm respectively would improve summer filter performance.

 The applied filtration rates during the trials were in the range of 12 - 17 m/h (5 – 7 gpm/ft²) and under all conditions the UFRV’s were reported in the range of ~246 – 528 m³/m² (8,000– 12,900 gal/ft²), exceeding the existing plant UFRV’s (3,000 gal/sf) and at or above the target UFRV’s (8,000 gal/sf) and without compromising filtered water quality.

 The full details of these trials are to be reported at a later date by both Roberts and CH2M HILL. However, in the meantime for information or a design based on the Enflo-DAF™ technology, process assistance with suitable similar or alternative applications then these can be provided by both Roberts Filtration and Enpure Ltd by.

 

 

 

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  Enpure successfully demonstrates high rate DAF at pilot plant in USA

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Last updated : 31/01/12

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