Effects of wastewater application on soil properties

The aim of this study is to determine the effects of the wastewater application on some geotechnical properties of sand-clay mixtures. The wastewater used in this study was obtained at Gaziantep GASKI Plant (GGP). Standard compaction test, unconfined compressive strength (UCS), Atterberg limits and permeability test were carried out to the sand-clay mixtures. Sand particles were added to the clay at the ratio of 10%, 20%, 30%, 50% and 70% by dry weight. Firstly, the optimum moisture content (OMC) and maximum dry density (MDD) were found and other experiments were carried out by using these values. Suspended solid (SS), biological oxygen demand (BOD), power of hydrogen (pH) and chemical oxygen demand (COD) experiments were performed with sand-clay mixtures which saturated through wastewater. According to the results, as the sand ratio was increased, the productivity of cleaning wastewater was decreased and permeability of wastewater was increased. Keywords: Wastewater, sand-clay mixtures.