The ability of distribution and increase to dissolved oxygen of water aerator case study: effluent water in the hospital

Abstract

The ability of distribution and increase to dissolved oxygen (DO) of water aerator in the hospital effluent pond which this experiment was perform to quantify of DO every 10 cm of depth until the DO was not found in the horizontal of 9 checkpoint at 7, 15 and 30 days, for determine the ability of distribution and increase the DO by using the energy-saving aerator. The result showed that the average of DO in wastewater before treatment by using solar energy aerator in 0 (surface), 30, 40, 50 and 60 cm from the surface were 6.99, 5.09, 3.57, 0.84 and 0.09 mg/L, respectively. When using solar energy aerator, result shown that at point number 4 the DO was maximum increase as 9.10 mg/L and the DO was increase 49%, 65% and 83% when installation the aerator 7, 15 and 30 days, respectively. When comparison between the same depth point the result shown that, at point number 3 and 9 were minimum of DO, with an average increase of DO were 30%, 37% and 46% at 7, 15 and 30 days, respectively, as a water distribution was decreased. Therefore, if the energy-saving aerator can movement, it may reduce the limitation of the water distribution.