Smart Sensor for Monitoring Integrated Wastewater

The commonly used wastewater treatment technology is coagulation-flocculation. This method weakness is in high processing costs and large sludge volumes. The more effective alternative method is electrocoagulation. Electrocoagulation is a coagulation method using electric current through an electrochemical process. The working principle of electrocoagulation is the dissolution of anode metal (M+) which reacts to hydroxyl ion (OH-) to form coagulant. In this study, the treated integrated wastewater by electrocoagulation method using aluminium and stainless electrodes. This process was conducted in continuous where integrated wastewater was placed in electrochemical cells containing smart sensors. Parameters varied are smart sensor pH, total dissolved solid, total suspended solids, chemical oxygen demand, biological oxygen demand and heavy metals (Fe and Pb). The optimum conditions for the aluminum and stainless steel electrodes are 12 volt voltage and 150 minute process time. The results show that pH decrease until 6.52, TDS 340 mg/L, BOD5 14,2 mg/L, COD 52 mg/L, PO4 1.884 mg/L and heavy metal contents Pb 0.009 mg/L and Fe 0.18 mg/L. The result of this research has fulfilled the environmental quality standard.