Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. IX
Written by Emil Catalin SCHIOPU, Roxana Gabriela POPA, Luminita Georgeta POPESCU
The inadequate and insufficient treatment of the waste water into a treatment plant endowed with two stage (mechanical and biological, using a treated system with fixed biofilm and a system for treatment and sludge dewatering) and its discharging into a natural stream that supplies a fishing stock, determined an inappropriate aquatic life. The continuous discharge of the water which contains insufficiently oxidized organic and chemical substances (due to non-functionality of the treated biological stage) and the exceeding of the maximum concentration for the quality indicators: ammoniacal nitrogen, CCOCr, CBO5 and detergents decreased the soluted oxygen from the water, the anaerobic biodegradation of the organic matters, ammonia intoxication and the generation of H2S as the lapse of the atmospheric pressure during the precipitations. The effects of the water pollution were manifested in suffocation and mortality of the fishing fauna.
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