Framework of Low Cost IOT System to Monitor Coal Mining Wastewater Quality

摘要

Water is one of essential element to support life ecosystem. While water is abundant in earth, but clean water is not always readily available. Therefore, water usage must be cautiously planned. Coal mining industry is one of the industries that consumes enormous amount of water. The industry needs 800-3000 gallons to produce 1 ton of coal. The consumption pushes local water resource to the limit. Therefore, mining company has responsibility to conserve water. However, the problem is not only the water consumption, but also the pollutants from the mining process. Wastewater must be properly treated before the water returned back to water resource. Indonesian government required coal mining company to frequently report wastewater quality to ensure the treated wastewater quality meet government regulation. Therefore, online monitoring is required to be able to monitor wastewater continuously. Advancement of low cost IOT technology allows deployment of wastewater IOT system in remote area. Therefore, the paper presents framework of low cost IOT system for wastewater quality monitoring. Further, the paper discusses the advantage and disadvantage of low cost IOT system. Then, cloud based IOT system architecture is selected as the architecture is suitable for remote area. In addition, dashboard presentation of wastewater quality is designed for web-based and android application. Deployment the IOT system in mining site confirms the applicability of the framework.