Abstract:
PT X is a clean water company with a continuous process system in raw water treatment.
This study evaluates the existing secondary data from the pre-treatment of water at PT
X, focusing on characteristics such as dissolved oxygen, iron (Fe), ammonia (NH3)
using a continuous aeration system. The purpose of this study is to offer an alternative
aeration approach to improve the pre-treatment process in reducing contaminants in
water. This research was done on a laboratory scale, employing the batch aeration
approach as an alternative to continuous aeration. The equipment employed includes a
batch aeration reactor, a chlorination unit, and different measurement instruments for
iron, ammonia, pH, turbidity, and dissolved oxygen. Based on data from laboratory-scale
studies, the batch aeration system showed considerable improvement in pollutant
removal. Specifically, the batch system was able to increase dissolved oxygen by 97% at
an air flow rate of 4 l/min, remove 100% of iron, increase pH concentration by 13%.
However, in this experiment, the ammonia content did not vary substantially although the
turbidity concentration in the water increase by 70%. These data imply that batch aeration
may be utilized as an alternate way to minimize pollutants in water in PT X's water pre-
treatment process.
