Sediment Oxygen Demand And Nutrient Balance In Tolo Harbour†
A Land-locked Embayment In Hong Kong
Author(s)
S. N. Sin, H. Chua & W. Lo
Abstract
Sediment oxygen demand and nutrient balance
in Tolo Harbour - a land-locked embayment in
Hong Kong
S. N. sin', H. ~ h u a ' & W. LO^
1 Department of Civil and Structural Engineering,
2 Department of Applied Biology and Chemical Technology
The Hong Kong Polytechnic University, Hung Hom, Hong Kong PRC
Abstract
As a land-locked embayment in Hong Kong, Tolo Harbour has been receiving
massive discharges of untreated municipal sewage, agricultural waste and
cottage industrial effluent via river and watercourses over the last three decades.
After implementation of the pollution control action plan in the early 1980s, the
exogenous organic materials have been substantially reduced. However, the
bottom sediments in the harbour have become a source of nutrients and exert a
measurable oxygen demand upon overlying waters. In this paper, in vitro
measurements of the sediment oxygen demand (SOD) were carried out. SOD
values were found between 0.42-1.30 g~2/m2d. Nutrient data for the period 1982
to 1996 wer
Keywords
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