Inhibition Of The Algal Bloom By Dissolution Of
Limestone
Author(s)
H. S. Kim, S. K. Lee & G. Kim
Abstract
Limestone is one of the well-known insoluble salts. Yet it is a possible source of
both calcium ions and carbonate ions which might act as an inhibitor of algal
bloom in a lake. The calcium ions may drive the flocculation of algae by double
layer suppression, while the carbonate ions may accelerate the seclusion of
phosphate from a lake ecosystem by helping formation of sparingly soluble salts
between phosphate and calcium ions. Therefore, in the lake of which the
catchments area is rich in limestone, there seems to be a rare chance of algal
bloom. There is evidence which supports the correctness of this hypothesis.
In this paper comparison will be made for the water quality data of two man
made lakes in Korea. Occurrence of the algal bloom has been observed every
year for one lake, while it has not happened at all for the other lake, even though
the water quality of both lakes is very much alike except for water hardness and
alkalinity. The cause of the difference in the algal bloom occurrence is
interpreted as a consequence of the difference in the hardness and alkalinity. The
authors believe that this finding will serve for the effective lake management for
the purpose of algal growth control.
Keywords: algal bloom, limestone, lake management, hardness, alkalinity.
1 Introduction
Eutrophication is one of the major concerns in lake water quality management.
The implication of the processes for phosphorus removal and denitirfication in
the wastewater treatment facilities is to endeavour to stop or retard the
eutrophication of the receiving water body like lake or littoral area.
Eutrophication means the abundance of nutrients like phosphorus and
nitrogen necessary for the growth of algae [1]. If the eutrophication continues for
Keywords
algal bloom, limestone, lake management, hardness, alkalinity.
Related Book
Other papers in this volume
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