Supplementary To Question 10 in the
Legislative Council On 6 November 1985
Mr. P.L.Chung : Sir, it has been mentioned that the installation of electrostatic
precipitators would remove most of the dust and grit. Can the Secretary tell us
the amount so removed in percentage terms; can this electrostatic preciptators
remove foul smell emitted from the incinerator ?
Secretary for Health & Welfare: Sir, electrostatic precipitators basically
remove what it is known in the trade as particulate matter, that is dust and grit,
and it does not remove other gases which emerge from the chimneys. To some extent I
think the smell would be reduced. I understand in fact that the gases which come from
the Laichikok incinerators are not particularly dangerous to health in the sense that
they do not breach the levels which are accepted internationally as being proper
for this sort of activity. I cannot guarantee that all the smell will be removed.
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