Efforts to Improve the Quality of Quicklime in Handling Acid Mine Drainage: A Case Study at PT. TCM

Abstract

PT.TCM is confronted with the significant challenge of exceedingly low pH levels in its wastewater, a condition that has detrimental impacts on the surrounding environment and the company's legal compliance. This study seeks to address the issue of acid mine drainage by augmenting the effectiveness of Quicklime use, pinpointing alternative Quicklime sources suitable for acid mine drainage treatment, and curtailing associated costs without sacrificing its capacity to raise wastewater pH. Utilizing Pareto and Ishikawa diagrams to discern the root causes and subsequently validating these findings through linear regression, the research assessed Quicklime's efficacy in the process. The results indicate that enhancements in Quicklime quality can curtail the quantity required by as much as 350%, leading to a notable reduction in PT. TCM's production costs.