Primary containment
The use of primary containment in civil works and company’s
operations process play a major role in the protection of
our environment and of our natural resources. It minimizes
the impact that chemicals, wastes and leachate could create
on the ground, our waterways and to our future generation.
The installation of a primary containment is regulated by
laws & rules. Only qualified and certified installers
are allowed to perform the installation. Examples of primary
containment could be: landfill cell, golf pond, heap leach
pad, landscaping pond, tailing dam, water containment basin,
etc.
In order to create an impervious primary containment, the
use of geomembrane is indispensable. Many factors will influence
the choice of material in order to build the right primary
containment: the waste composition, waste-generation rate,
and the purpose of the primary containment.
There are three generic containment types: treatment; surge
or storage; evaporation of disposal. Waste inputs and treated
waste discharges from treatment impoundments may be steady,
fluctuating, or intermittent. Except for some surge or storage
water input is direct precipitation on the impoundment surface
and interior dike slopes. Non-discharging surface impoundments
generally rely strictly on natural evaporation to maintain
liquid level.
In comparison with the secondary containment, primary containment
is the first point of contact with the substance we want to
avoid infiltrating the ground. Secondary containment is more
a prevention to the failure of the primary containment. In
the petroleum industry, the necessity to install a secondary
containment is commonly required. As in industrialized nations,
the standards are more stringent than ever, now requiring
the installation of impervious membranes wherever activities
involving ecologically hazardous liquids are carried out,
in gas stations for instance, or petroleum stockyards.
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