Improving Water Pollution Control from Hospital to Protect Ground Water Contamination in Wangi-Wangi Island, Indonesia

Abstract

The hospitals are required to manage their waste to meet the required wastewater quality standards. This condition does not work properly at one of the government hospitals in Southeast Sulawesi. This study aims to evaluate the performance of hospital WWTPs and provide design recommendations. Evaluation of the WWTP building is carried out based on the discharge of wastewater obtained from the number of patient beds and the number of workers. The results show that the existing WWTP building is insufficient to accommodate the 36.484 liters of wastewater produced per day. Apart from that, leaks in the collection tanks and pipes are other reasons for the bad performance of WWTPs. The limestone soil also accelerates the process of seepage of wastewater, so it has potential to contaminate the soil and groundwater. Significance and impact study: To improve the function of the WWTP, a design was carried out with an anaerobic-aerobic biofilter system. This system consists of several parts with the following capacities: oil separation tank 3 m3, equalization tank 28 m3, initial settling tank 4.5 m3, anaerobic biofilter tank 25.2 m3, aerobic biofilter tank 13.95 m3; final settling tank 8.44 m3, and chlorination tank 1.584 m3.