an oil spill it may be required to remove all traces of the
oil on any surfaces either because of safety considerations
or because of aesthetic considerations. This is particularly
the case where traditional absorbents are used which leave
oily traces from spillages.
general, standard degreasants or cleaning materials will be
used in the clean up operation.
theory, where an oily surface is cleaned down the oily wastewater
should be trapped and not allowed to run into surface drains.
This may entail the use of absorbent socks or blankets to
retain the oily water. However, in practice we probably know
that the oily wastewater is allowed to run into the surface
drains in many instances.
may therefore be the cost of these absorbent socks together
with their correct disposal costs.
spillage may have taken place within a bunded area or where
an interceptor catches all surface water. The catchpit in
the bund or the interceptor will retain all the oil in the
some later date the bund catchpit or the interceptor will
have to be pumped out by an authorised waste oil disposal
company. The oily waste will have to be treated and ultimately
will represent a high cost in every way. The cost of the collection,
the cost of incineration, the environmental cost of incineration
due to emissions to atmosphere and the emissions to atmosphere
due to the collection vehicle.