Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 19 ISSUE 2
Written by Cecilia NEAGU, Elena LASCĂR, Nicoleta OLTENACU
Waste water quality indicators can provide information on the degree of pollution that waste water can have on the rivers where they are discharged. In this study I tried to analyze the quality of the waste water with significant contribution to the pollutants that reach Borcea branch, coming from Călărași Municipality Waste Water Treatment Station. Waste water quality indicators, which can suggest their purification, were: chemical oxygen consume, biochemical oxygen consume, total nitrogen, total phosphorus and suspended solids. The analyzed water quality indicators are included in the limits imposed by the norms in force, namely NTPA 001, but sometimes, because of the thermal regime, with oscillating temperatures and humidity, nitrogen and phosphorus exceed the limits. In the cold seasons of the year, there is a poor functioning of the biological step, leading to a low nutritional nitrogen pollution of Borcea branch. The efficiency of the treatment station, analyzed for the five indicators is good, ranging from 74.78% to 95.24%.
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