Testing Industrial Effluents With Bioassays
In Greece
Author(s)
A. Kungolos
Abstract
The primary aim of this study is the investigation of a suitable bioassay that
could be potentially correlated to respirometric techniques in order to evaluate
industrial wastewater toxicity. Three microbiotests, the crustacean Daphnia
magna test, the marine bacterium Vibrio fischeri test and protozoan Tetrahymena
thermophila test, were used in order to investigate their potential correlation with
a respirometric technique. It was found that the Tetrahymena thermophila test
correlates best with respirometric techniques. The toxicities of the effluents of
three different groups of industries, located in Thessaloniki, Greece, metal
coating, food and dying industries, were also tested.
Keywords: effluent toxicity, RODTOX, Microtox, Daphnia magna, Tetrahymena
thermophila, Thessaloniki, industrial effluents.
1 Introduction
During the last decades there has been an increasing concern on the presence of
toxicants in the aquatic environment. Among the bioassays that have been used
for the estimation of the toxic effects of chemicals on the ecosystem, microscale
procedures, now commonly referred to as microbiotests, have emerged as cost-
effective and simple to operate methods [1]. On the other hand, toxicants present
in industrial sewage reduce the efficiency of biological wastewater treatment due
to intoxication phenomena. The biological treatment of wastewaters is based on
the development of a complex community of microorganisms in the aeration
tank of the treatment unit. Various techniques have been developed for the
monitoring of intoxication phenomena towards the activated sludge in order to
ensure the treatment process. Most of toxicity directed approaches for the
Keywords
effluent toxicity, RODTOX, Microtox, Daphnia magna, Tetrahymena
thermophila, Thessaloniki, industrial effluents.
Related Book
Other papers in this volume
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