A Novel Sensing System to Detect the Overflow of Septic Tanks

The detection of overflow of septic tank is being carried out manually only after finding the leakage from the outlet because of its enclosed underground structure. However, direct human handling is dangerous due to the formation of poisonous gases from the decomposed storage of human wastes which causes unpleasantness to human, and communicable diseases such as cholera that are challenging for public health. Here, in septic tanks, the contaminated water that has low density is discharged from the outlet whereas the colloidal or semi-solid waste is stored. Hence the detection of exact leakage other than the contaminated water from the septic tank is difficult. To resolve this problem, a density sensing system that can sense the density of the colloidal fluid and a sensor that can detect the gases especially methane is placed at the appropriate place on the septic tank with a battery-operated sensing system that needs low maintenance. This system can be applied to every household that has a septic tank for earlier detection of overflow of sewage.