Water Pollution In HK

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Water Pollution In HK
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CausesEffects
Livestock Waste Oil Spillage Residues of
Pesticides Detergents in Sewage Industrials
Effluents
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Sewerage Master Plans(SMPs)
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Strategic Sewage Disposal Scheme(SSDS)
the scheme aims to collect, treat and dispose of
the over 1.7 million cubic metres of sewage
generated each day from the densely populated
urban areas of Hong Kong.
One of the major deep underground tunnels
Interim sea outfall constructed under the
Strategic Sewage Disposal Scheme
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The major infrastructure of the sewage system in
the SSDS at first stage in 1999.
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Toxic Metal Discharge into Victoria Harbour
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Chemically Enhanced Primary Treatment (CEPT) The
Stonecutters Island Sewage Treatment Works of the
HATS Stage I use the chemically enhanced primary
treatment (CEPT) process. This is the first time
this treatment process is used in Hong Kong. In
this process chemicals (ferric chloride and
polymer) are added to the sewage to facilitate
the settlement of suspended solids. The settled
sludge is removed from the sewage resulting in a
clear supernatant for discharge to the sea.
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Harbour Area Treatment Scheme (HATS) - Overview
Stage I includes the construction of a 23.6 km
long deep tunnel conveyance system to convey
sewage collected from Kowloon stretching from
Tsuen Wan in the west to Tseung Kwan O in the
east and from northeast areas of Hong Kong
Island comprising Chai Wan and Shau Kei Wan to
Stonecutters Island, where a treatment works
adopting a chemical process using ferric
chloride is built to treat sewage.
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Strategic Sewage Disposal Scheme (SSDS) has been
renamed as Harbour Area Treatment Scheme (HATS)
since March 2001!
Are the harbour clean?
No!
Visit http//www.info.gov.hk/cleanharbour for
details.
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Water Quality in Victoria Harbour Characterised
by low dissolved oxygen and high E.coli levels,
the water quality of Victoria Harbour is
generally unsatisfactory. The poor water quality
is mainly due to the lack of proper sewage
treatment for urban areas around Victoria
Harbour. The Government is tackling the
problem through the implementation of the
"Harbour Area Treatment Scheme (HATS)", formerly
known as the "Strategic Sewage Disposal Scheme
(SSDS)"
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Industrial Effluents
Copper
Chromium
Cadmium
Nickel
Mercury
Lead