Abstract
Pollution is a man-made phenomenon. Some pollutants which discharged directly to the environment could create serious pollution problems. Untreated wastewater will cause contamination and even pollution on the water body. Biological Oxygen Demand (BOD) is the amount of oxygen required for the oxidation by bacteria. The higher the BOD concentration, the greater the organic matter would be. The purpose of this study was to predict the value of BOD contained in wastewater. Mathematical modeling methods were chosen in this study to depict and predict the BOD values contained in facultative wastewater stabilization ponds. Measurements of sampling data were carried out to validate the model. The results of this study indicated that a mathematical approach can be applied to predict the BOD contained in the facultative wastewater stabilization ponds. The model was validated using Absolute Means Error with 10% tolerance limit, and AME for model was 7.38% (< 10%), so the model is valid. Furthermore, a mathematical approach can also be applied to illustrate and predict the contents of wastewater.
Highlights
The capital cities in Indonesia have some problems about environment quality, especially at settlements, so the greater population the more pollution increase [1, 2]
Domestic wastewater from Yogyakarta City, Sleman Regency, and Bantul Regency is treated through Waste Water Treatment Plants (WWTP) Sewon in Bantul
The WWTP Sewon is located in Bantul regency and services domestic wastewater from almost 63.015 people [10]
Summary
The capital cities in Indonesia have some problems about environment quality, especially at settlements, so the greater population the more pollution increase [1, 2]. Stabilization pond relies on natural processes of wastewater treatment by using the presence of microorganisms on it [2, 3, 9]. Those microorganisms could reduce organic matter of pollutant contained in pond [2]. One part of stabilization pond system is facultative pond such as Waste Water Treatment Plants (WWTP) Sewon in Bantul, Indonesia. WWTP Sewon was established to treat domestic wastewater from Yogyakarta City, Sleman Regency, and Bantul Regency
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