wastes and wastewater from producing operations are usually
treated in a "pre-treatment" process before being
discharged into the sewer. This is done to reduce sewer charges
by lowering the BOD of the wastewater. BOD stand for "Biological
Oxygen Demand", and is a measurement of the amount of organic
material in the waste water. Food processing wastes are the
water discharged from these operations:
water, skins, rinds, pulp, and other organic waste
from fruit and vegetable cleaning, processing, cooking
fat, oils, wash water, cooking waste, dripping, hair,
and feathers from slaughtering, butchering, cooking and
packaging of fish, chicken, beef and all other
and Egg processing:
and process waste from egg and milk processing,
drying, bottling and packaging.
soda or fruit or juice bottling , bakeries, breweries,
distilleries, sugar and grain processing and animal
pre treatment facility is usually quite simple in designed.
It's main purpose is to hold the waste water for sufficient
period of time while the bacteria do their
job. The bacteria digest suspended and dissolved solids, actually
functioning like a simple miniature wastewater treatment plant.
It can be holding tank or retention pond, or a series of tanks
Unless the ponds or tanks are properly treated, they can give
off foul odors, have severe accumulation of solids on the
bottom, and fail to lower the BOD as much as desired. This
is because the naturally occurring bacteria are not efficiently
waste digester. To make this type of pre-treatment process operate
properly, you required the right types of bacteria that must
be introduced into the system.
processors want to reduce the BOD of their wastewater
as much as possible before it is discharged into the municipal
sewer system. Commercial users are required to pay surcharges
to the sewer system authority if their waste has high BOD. This
is done because the high BOD waste puts an
extra burden on the municipal treatment plant, making it
work harder than normal. When you consider the many thousands
of liters of water that a food processor can use every
day, even a small "per liter" surcharge can add up to big
bills. Proper pretreatment of the waste - before discharge
into the sewer system - will reduce or eliminate costly surcharges.
Food processing waste can be difficult to treat
than many other types of waste. This is because the
food processing waste is fresh organic material. It is not already
partially degraded, like many other types of
waste. It is often acidic, and contains few naturally occurring
bacteria to aid in digestion. It also contains a large amount
of cellulose material, which required extra time and effort
for the bacteria to digest. Finally, the typical pre-treatment
facility is very simple and unsophisticated in design - unlike
most municipal sewer treatment plants.
a system can, however, do its job very well. If the
operator is able to pay a little bit of attention to his system,
it will do a good job of reducing the BOD of the wastewater.
In most cases, a good treatment program will be as simple as
adding bacteria and enzyme product at regular intervals and
monitoring of the waste - adding chemical, pH adjusters
as required to maintain the pH in the proper range.
key to proper operation of this type of pre-treatment is time.
The special bacteria in Biozyme®
work much faster and more efficiently than ordinary
bacteria, but they still require time to digest the waste. The
longer the retention time, the more organic matter will be digested,
and the lower the BOD of the effluent water. Thus, retention
time is the most critical factor in determining how
much the products must be used in a regular treatment