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In our experimental trials, we need to add clay and alum to the influent tap water line. Based on the flow rate, we have stock solutions of clay and alum that are pumped in to the tap water line to deliver a raw water supply of 5 NTU, with an alum dose of 1.5mg/L. The alum dose of 1.5 mg/L is calculated based on 30 mg/L dose per 100 NTU influent. Both the influent and effluent turbidities are recorded using Process Controller.
Figure 2: Process-flow diagram showing major system components for the proposed experimental trials