Professional paper
ECOTOXIC COMPOUND AS BIOLOGICAL PARAMETER FOR ESTIMATION QUALITY OF THE REFINERY WASTEWATER
Smiljana Korunić Košćina
Marija Mioč
Vedranka Bobić
Abstract
Abstract
With the complete treatment of processing the wastewater and application of overall quality effluent research, the Petroleum Refinery Rijeka is practicing a very effective recipient protection and sustaining natural biological sea ecosystem balance.
According to legislative regulations, the research of ecotoxicity of the discharged wastewater is needed before releasing it in the sea because of the evaluation of its affliction on the sea ecosystem.
Ecotoxical research is included in the programme of monitoring quality of the refinery effluent and ground waters since 1997. Consequently, the 5 year results are available, which is, according to scientific data processing minimum, obligatory for defining the significance of biological parameter affliction.
Standard German Method DIN is used in order to determine toxicity of the discharge and ground waters. The bio-illuminating method is one among the short term tests, where fluorescent bacteria is used as the test organism. This method is adjusted to measurement of toxicity of the industrial discharge waters that contain high levels of salinity in most cases. Information gathered in toxicity research for 6th year now, are relevant foundation to draw conclusions on possible intoxication of organic and inorganic poisons, both local and resorptive effects on test organisms.
Furthermore, when evaluating state of the sea receiving recycled refinery wastewater, the side-effect interaction processes should be taken into the account, i.e. an effort should be taken to determine the measure of interactive influence of all chemical, physical and biological parameters on test organisms, with the recognition of collating relations. This is a unique way to separate and evaluate bio-depressive and bio-stimulative effects of the examined wastewater on recipient ecosystem.
The aim of the paper and data processing on ecotoxicity of the effluent is to determine the sort and the amount of Petroleum Refinery Rijeka influence on the sea pollution with a purpose of improving quality of the discharged wastewater and ecological protection of biocenosis.
Keywords
waste water; ecotoxicity; analysis by biological methods; method of monitoring
Hrčak ID:
7374
URI
Publication date:
30.6.2003.
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