a tank is converted to treat organic waste water from kitchen as shown in the figure. biogas gets accumulated on top part of the tank. which of the following options is a suitable location for drilling an air hole to maintain the water level inside the tank?
The best location to drill an air hole in an organic wastewater treatment tank is at the top of the tank, just under where the biogas accumulates.
This allows the biogas to escape without disturbing the water treatment process while maintaining proper water levels and pressure within the tank.
Proper aeration and effective decomposition of the waste organics are ensured in this placement.