“…Many authors investigated different methods to purified polluted water using low cost sustainable methods 14-16, 23, 51,52, 57, 60-62, 62, 54,55, 10, 34, 48-50, 34. There is a greater need for improved air quality and much more efficient design ventilation to reduce virus survivability with the present epidemic. In addition, people will be less likely to touch light switches, electronic items, or elevators after the epidemic, resulting in an increasing number of touchless devices in a building, such as hand-free doors, sound-activated lifts, and mobile-controlled central door locks 9,32,33,40,27,50 .…”