NQA
European Commission project  for your
afm logo of dryden aqua active filter media

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AFM® pressure filtration of the waste water filtration of brewery effluent is now being progressed.  Prior to AFM® filtration the water was passed through a wedge wire screen in order to remove the gross solids from water.  The photographs below show the quality of the effluent entering and leaving the AFM® filters.

Virtually all of the yeast has been removes ( 6 to 8 micron particles) leaving only some colloidal matter comprising of yeast cell walls and colloidal matter.  The COD of the effluent has been reduced by 70%. on a single pass through the AFM® filter.  The back-flush water is sent to a sedimentation tank in order to concentration the yeast sludge.  We are now exploring strategies for disposing of the waste sludge on agricultural land as a fertiliser.

An AFM® system treating the waste water has a pay back under 1 year derived from savings in trade effluent discharge costs

Brewery Effluent