Midfield
Meat Leads the Way
29 August 2002
Baleen Filters supports Midfield Meat at Warrnambool
in Vic in their decision to explore new technology to deal
with an environmental problem that has existed in the meat
industry for decades. Wastewater treatment within the meat
and by-product processing industries has traditionally been
reliant upon secondary treatment (DAF), settling and anaerobic
/ aerobic processes.
The wastewater treatment facility at Midfield
Meat goes against traditional methods that are fraught with
numerous problems. Midfield Meat demonstrates innovative ‘thinking’
towards handling wastewater discharge that is ex processing
operations.
Their approach centres upon stream splitting
into hot (red) and cold (green) streams and separation of
solids constituents to alleviate biodegradation of suspended
matter. Therefore, reducing BOD and odour generation.
Separation of solids and greasy matter (by
screening) is conducted over a number of stages. This involves
removal of offal remnants (to 5mm), paunch debris (to 1mm),
and coarse fines (to 250 micron) using conventional technology.
This is followed by ‘Baleen’ fine screening of
all visible fines, including suspended grease, (to 125 micron)
and non-visible fines (to 65 micron).
In total approximately 20 - 25 tonnes of solid
matter is recovered from wastewater discharge per day. The
aim of intensive screening is to keep the majority of the
solids ‘chemical free’ so it allows it to be safely
used in composting operations.
Screening trials are to commence early in
2003 for flocculation of colloidal matter and fine screening
(to 35 micron) to impart radical improvement in clarity of
filtered wastewaters prior to re-use or disposal.
For further information you can contact Andrew
Westlake at Midfield Meat Co. on (03) 5562 1644.
Download Meat Industry Case Study (380KB PDF)
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