An Experimental Study on Treatment of Domestic Wastewater by Natural Soil

Abstract

In recent centuries, issues such as efficient use of water resources, water quality and water supply have become important for many countries. Countries have focused on developing strategies that can protect water and using water in the most efficient way including treatment of wastewater. In addition, it has become important to provide sustainability of the natural treatment systems instead of complex and expensive wastewater treatment facilities that are rapidly developing. On the other hand, the researches on natural treatment of wastewater are still inadequate. Therefore, the feasibility and performance of new stragtegies about natural treatment systems should be developed and evaluated. For this purpose, a pilot facility was developed which utilizes a natural soil-column with different gradations in order to provide the treatment of domestic wastewater. In this way, not only the wastewater treatment performances of different soils but also some engineering properties of soils affected by wastewater filtration were examined. As a result of this research, it was found that soil filtration can be effective in the treatment of wastewater subjected to pre-sedimentation and can be affected by the pollutant load of the filtration environment.

An investigation into the role of treatment performance and soil characteristics of soil-based wastewater treatment systems

“…These results have provided the wastewater standards discharge values (e-Legislation no: 7221). Similar results have been reported elsewhere (Todt et al 2014;Karpuzcu et al 2020). Chun et al (2008) found that the influent water SS concentration was 184 mg/L, while the effluent water SS concentration was 6-17 mg/L.…”

“…They stated that soil with a high concentration of contaminants would be difficult to compact and a lower density could be obtained compared to uncontaminated soil under the same compaction effort and environmental conditions. On the contrary, studies shows that the optimum water content decreases and the maximum dry density increases (Jedari & Hamidi 2015;Karpuzcu et al 2020).…”

“…In previous studies observed that similar results were achieved. Studies have been conducted showing that tannery (Stalin et al 2010), textile (Oriola & Saminu 2012) and domestic (Karpuzcu et al 2020) wastewater decrease the UCS of soils.…”