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Benefits
Soil filters are highly effective in treating polluting
waste gas in a manner that is
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economical:- there are minimal energy requirements
and little operating costs.
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simple:- maintenance involves routine watering
and pH checks.
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clean:- the end products are non-hazardous,
odourless compounds.
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sustaining:- the micro-organisms are self
generating
under the operating conditions of the
system.
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Application
The Soil Filter System has application in a wide range
of industries:
Biological matter, water and minerals interchange
and distribute through an open system in a self regulating
and sustaining cycle. The system requires only the occasional
watering and a pH check, thus keeping maintenance to
a minimum.
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The Technology
The soil filter comprises a ducting system in a bed
of specially selected soils and filling material with
biological activity. Polluted gas is channeled through
the duct by a fan, at a rate determined by:
Specially selected bacteria introduced into the soil
media feed upon and decompose the sulfurous and organic
gaseous contaminants, producing odourless and non-hazardous
carbon dioxide and inorganic salts.
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The composition of the soil matrix
is calculated on the basis of the anticipated composition
and volume of flow-through gas. The presence of lime
helps control acidity due to the decomposition products
and the addition of sand or loamy soil increases soil
porosity and helps regulate flow and retention of air
in the system.
The ducting system is designed
for a minimum pressure drop and to provide an even distribution
of waste gases across the soil filter bed.
In all, the soil filter is imbedded
in a land plot, where no physical barrier delineates
the natural soil from the soil selected for the filter.
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