This is a DI (Deionized) water purification process flowchart template. It details the step - by - step workflow of deionized water production, from raw water source filtration (sand filter, activated carbon filter) to pre - treatment, RO filtration, and final purification before storing in the DI water tank. Ideal for process engineers, water treatment specialists, and plant operators to design, analyze, and optimize deionized water generation processes, ensuring clear visualization of equipment interactions and purification stages.