Evaluation and Design of Wastewater Management at Indrasari Rengat Hospital for Upgrade Program from Class C to B

Indrasari Rengat Hospital, a hospital owned by the Government of Indragiri Hulu Regency in Riau Province, Indonesia, was upgraded from type C hospital to type B in May 2018. This improvement program was followed by the addition of beds from 120 to 200. The production of wastewater in this hospital was around 57.6 m3/day, with a water demand of 500 L/bed per day. This study aims to evaluate wastewater treatment performance and provide recommendations on wastewater management. The research was conducted by case study method, design evaluation, and redesign of the existing wastewater treatment plant (WWTP). Evaluation results showed that the WWTP would still be able to accommodate an increase in wastewater discharge due to additional beds for type B hospital. The maximum number of beds, in order that the WWTP would still be able to hold the wastewater, would be 240 beds, which is equivalent to 115.2 m3/day of wastewater discharge. At this discharge, WWTP would fulfil design criteria for key parameters such as hydraulic loading rate, organic loading rate, and detention time.