Toxicologie environnementale et analytique

Water contamination is a global problem that primarily affects rural communities that use these water sources for daily domestic activities. The review objective was to decide whether the emanating from the Bushbuckridge Region's Waste Water Treatment Works (WWTWs) adds to the contamination of the Sand Stream Catchment. Thulamahashe and Dwarsloop were the two WWTWs where the investigation was carried out. Participants responses to a questionnaire were gathered. For the purpose of determining physicochemical parameters and coliform counts, monthly water samples were taken from the treatment plant and Sand River. The study discovered that the Sand River Catchment was primarily polluted by WWTWs. Unprecedented mechanical and technical difficulties confront the WWTWs. Raw wastewater has been discharged into catchments as a result of numerous system failures at the WWTWs as a result of aging systems and pressure on deteriorating facilities. Besides, the review uncovered those elements like populace development, unfortunate activity and support of WWTWs, poor planning and an absence of thoroughly prepared staff added to WWTW disappointment. Both WWTW effluents met the National Water Act of South Africa's effluent discharge standards for pH (between 6.90 and 9.30), EC (between 20.80 and 87.50 ms/m), ammonia (between 7.22 and 86.80 mg/L as N), nitrate/nitrite (between 0.10 and 0.73 mg/L as N) and ortho-phosphate (between 0.01 and 6.50 mg/L as P). During some of the study's months, COD levels in both WWTWs exceeded the limit (ranging from 25.00 to 149.00 mg/L). The study also found that E. coli counts were low upstream but high downstream for both catchments and at the WWTW's point of discharge. As a result, the study established a link between the condition of WWTWs and water quality parameters, as well as a link between wastewater treatment plants and poor water quality. The study recommends taking efficient measures to deal with the issues.

Groundwater deposits, along with photovoltaic cells and wind turbines, are now likely to become the third primary source of renewable energy as fuel, gas and electricity prices rise. These deposits are characterized by unrestricted, clean and friendly to the environment energy with constant parameters that are unaffected by wind and solar energy fluctuations. In FCH HVAC, novel low-carbon methods for converting groundwater energy into heating and cooling are presented in this paper. A study that describes the system that was implemented in the Integrative Sports and Recreation Centre in omianki is a good illustration of the significant reduction in CO₂ emissions that this technology was able to achieve. In the above-mentioned centre, new FCH technology installations will reduce CO₂ emissions and energy used for heating and cooling by at least 50%. The purpose of this article was to explain how to use the energy from underground waters in HVAC installations. The authors present a novel approach to the utilization of forgotten energy that not only is accessible in unrestricted quantities at all latitudes but also has a negligible impact on the environment and has the potential to significantly reduce CO₂ emissions.