The objective of this study is to determine if the nitrogen treatment efficiency of a large onsite wastewater system (OSW) in the coastal plain of North Carolina is influenced by changes in the elevation of the water table. Groundwater readings including depth to water, pH, temperature, ...
PROBLEM TO BE SOLVED: To provide a large-sized septic tank which is light weight and strong against inside and outside pressures and recyclable and prevents the generation of harmful gas during incineration time by using a ring-shaped olefin crosslinked polymer and forming a curved surface on the...