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Promotional article
The problems
of sludge
build-up in
farm
evaporation
dams
Biozymes SA, a South African-based
company specialising in the development,
commercialisation and implementation
of technologies geared
towards preservation, protection and
clean-up of the environment, found
a solution for the problem of sludge
build-up in farm evaporation dams.
Recent tests and case studies con-
clusively prove the effectiveness of the
Biozymes Effluent Water Treatment
Enzymes in treating the sludge/evaporation
dams on pig farms.
The problem
Great efforts are made by farmers to
separate the solids from the effluent
before the liquids go to the evaporation
dam(s), but large volumes of small particles
pass through the solids separator
which then accumulate and coagulate,
once in the dam.
These particles quickly form large
clumps and become floating islands,
which after a few months are dense
enough and large enough for large birds
to walk on. Typically birds such as Egyptian
geese or Ibis are common visitors to
these dams.
Amongst the problems with these
accumulations of solid matter are:
• Lack of oxygen transfer creating
anaerobic conditions.
• Noxious smells and fumes as a result
of the anaerobic conditions.
• Silt build-up and floating islands –
creating less volume area available for
aerobic activity.
• If untreated, the dam becomes
unusable and would require emptying
by mechanical means like grading or
excavation, or worse, needing to be shut
down and a new dam built.
• Poor water quality seeping into the
ground water and contaminating wells
and boreholes for the farm and its neighbours.
28
The second sampling point on 3 October 2011, when the test started.
Objective
The objective of Biozymes SA’s approach
is to create a healthy viable aerobic
environment, within which naturally
occurring bacteria will consume the bulk
of the organic matter, resulting in a reduction
of accumulated solids and much
cleaner water. Once clean enough, this
excess water can be used for irrigation
of the lands.
Table 1.
The first sampling point.
BEFORE
3 October 31 October
Amonia 1 867 623
COD 59 541 4 105
Suspended solids 39 489 2 092
The products that Biozymes SA uses
are formulated and manufactured by a
large multinational company and have
been developed and improved on over
the last two decades. The products have
assisted many industries, to deal with
their effluent problems, including the agricultural
industry. A summary of a recent
case study, can be seen in Table 1.
Porcus Januarie/Februarie 2012