Study of Physico-Chemical Characteristics of Wastewater in an Urban Agglomeration in Romania

Abstract

This study investigates the level of wastewater pollution by analyzing its chemical characteristics at five wastewater collectors. Samples are collected before they discharge into the Danube during a monitoring campaign of two weeks. Organic and inorganic compounds, heavy metals, and biogenic compounds have been analyzed using potentiometric and spectrophotometric methods. Experimental results show that the quality of wastewater varies from site to site and it greatly depends on the origin of the wastewater. Correlation analysis was used in order to identify possible relationships between concentrations of various analyzed parameters, which could be used in selecting the appropriate method for wastewater treatment to be implemented at wastewater plants.

International progress and evaluation on interactive coupling effects between urbanization and the eco-environment

“…When a city is growing excessively quickly, for example, and there is a lack of corresponding infrastructure, urban development will tend to adopt unsustainable methods of exploiting land and water re-sources, leading to water shortages and weakened environmental carrying capacity, thereby impeding urbanization (Orubu and Omotor, 2011). Changes in urban lifestyles will have a profound impact on the future water footprint of cities (Hubacek et al, 2009), and the pattern of water use, sources of wastewater and quality of wastewater of urban agglomerations are closely connected (Popa et al, 2012). Whether cities are vulnerable to water constraints depends on factors such as formal water infrastructure, the rate of land-use change and spatial patterns, the adaptability of residents and land-based water systems.…”

“…Related studies have shown that the main reasons for air pollution in China are the large population, industrial pollutants and high emissions, combustion of biomass and regional transport (Li et al, 2013;Zhang et al, 2015b), with significant regional differences and spatial dependency . Popa et al (2012) looked at multiple physical and chemical properties of wastewater and the concentration of pollutants, as well as their distribution, in the Danube and discussed the relationship between water use, wastewater sources and wastewater quality of an urban agglomeration in Romania. Jinyuan Xin et al (2012), meanwhile, looked at Beijing's PM 2.5 data for the period of the 2008 Olympics, the results of which showed that restrictions on production and driving in the urban agglomeration caused concentrations of PM 2.5 to fall during that period in the Beijing, Tianjin and Hebei area (controlling emissions contributed 62%-82%, meteorological conditions contributed 18%-38%), thereby fulfilling the objective of staging a "green Olympics".…”

Assessment of heavy metals uptake in leafy vegetables grown on long term wastewater irrigated soil across Vrishabhavathi River, Bangalore, Karnataka.

“…It also carries Industrial effluents along Bangalore-Mysore State Highway factories and Bidadi Industrial area. The sampling stations selected were highly contaminated due to the addition of raw UWW and industrial effluent to the polluted river [14]. The UWW is used for irrigation in this stretch from several decades.…”

Assessment and remediation of pollutants in Ghana's Kete-Krachi District Hospital effluents using granular and smooth activated carbon

“…COD is also a very important property of wastewater, hence, reducing it by 63.43% means that the SAC can help reduce the oxidative potential of the organic and inorganic compounds in the wastewater [47] to about 63%. This will tend to effectively reduce the chemical oxidative degradation of the effluent, thereby, reducing disturbance of the ecosystem in the Lake Volta and the associated risk posed to public health.…”