Abstract
Studies were performed to determine a toxicity of wastewater before being fed to disposal facility, after biological and various methods of water treatment. The marine microalgae Heterosigma akashiwo isolated in Peter the Great Bay (Sea of Japan, Vladivostok) was used as a test object. Comparative analysis outcomes presentation regarding wastewater samples before being supplied to disposal facilities, wastewater samples after secondary sedimentation tanks, a self-cleaning sand filter, a semi-industrial installation – a slow cassette filter, and polished effluents by chemicals.
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