Abstract
The analysis of several criteria for influent and effluent of urban sewer water treatment plant in south and south east of Romania, has a crucial role in establishing the correlations between these factors, and furthermore to assess the efficiency of the treatment system. Increasing urbanization degree and its complexity has made studies of the pollution impact appraisal to be a necessity. The mean values of the parameters measured from the wastewater plant influent like temperature, pH, suspended solids, chemical oxygen demand and biological oxygen demand vary from 17.13 � 0.23�C, 7.68 � 0.04, 234.72 � 1.55 mg/L, 396.42 � 0.76 mg/L, and 190.29 � 15.23 mg/L, respectively. The values of the above-mentioned quality indicators after the water treatment are 17.11 � 0.14�C, 7.56 � 0.03, 22.6 � 1.02 mg/L, 62.95 � 0.16 mg/L and 20.49 � 9.06 mg/L. Correlation study intended to define the feasible dependence among the evaluated parameters indicated that there were positive and negative correlations between the influent and effluent. The study conclusions point out the certitude that exist major optimizations in wastewater property after treatment processing.
Highlights
Water management represents a significant challenge in numerous densely populated regions and countries all over the world
As stated in the Water Framework Directive (WFD), the ecological condition of surface waters is established on the basis of an integrated assessment method including hydro-morphological, chemical, physicochemical and biological factors and every quality parameter provides a distinct data on the state of aquatic ecosystems [2]
The imposed indicators comply with European requirements, as follows: temperature
Summary
Water management represents a significant challenge in numerous densely populated regions and countries all over the world. Increasingly advanced improvements in treatment have caused higher potential deterioration, increased electrical power usage, and higher environmental discharges [3]. In its entirety, these elements cause increasingly environmental challenges. Various WWTPs options have different efficacy at distinct treatment standards and differing direct impacts on the environment. For these reasons, there is a requirement for comprehensive environmental evaluations within wastewater treatment facilities to accomplish specific treatment requirements in regard to environmental effects [4]
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