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56
included in an application for Town Planning approval.
In many designs for modern buildings there is a tendency to
disguise the chimneys in an attempt to ensure that it is not seen.
However admirable this may be from an aesthetic point of view,
from a public health standpoint it would be better to have the
chimney discharging well above and clear of surrounding buildings.
There can be no doubt however that the removal of smoke
and grit particles from the atmosphere will do much to alleviate
the suffering of those affected with respiratory and cardiac disorders.
Although sulphur gases may be present, their harmful
effects appear to be reduced when smoke is removed.
Smoke Observations
Regular observations have been carried out to check emissions
from industrial chimneys. As will be seen from the Table,
the number of contraventions is not large. The contraventions an
usually from installations consuming waste wood and are due
generally to the changing nature of the wood waste being fed to
the furnaces. Some woods burn easily whilst others are extremely
difficu It and only vigilance on the part of the boiler room attendant
can ensure a proper mixture and can prevent smoke pollution.
Measurement of Pollution - Volumetric
During the year, this new type of measuring apparatus was
brought into use. In this apparatus the air is drawn from outside
by a pump and passed through a filter paper. The smoke particles
are removed in the filter and the air is then passed through a solution
of hydrogen peroxide to remove the sulphur gas. It is possible
thus to determine the weight of smoke and sulphur dioxide
per unit volume of air.
The apparatus is essentially designed to measure pollution
arising from domestic sources and has been sited at Eastbury
House, which is in the centre of Smoke Control (No.D Area.It
will therefore be possible to check the efficacy of the domestic
smoke control measures in this area.
The graphs on Pages 58-62 indicate clearly how much