A conceptual diagram showing a tertiary wastewater treatment system with a rapid mixing tank, flocculation tank, sedimentation tank, and two rapid sand filters.

Create a conceptual process layout (plan view) of a proposed tertiary wastewater treatment system. The drawing should be schematic and not to scale, using simple rectangles and arrows to show flow direction. Include the following treatment units in sequence: Rapid Mixing Tank Dimensions: 1.5 m × 1.5 m Annotate: FeCl₃ dosing point Dose = 5 mg/L (≈ 24.1 kg/day) Fe:P molar ratio = 3:1 Flocculation Tank Dimensions: 4.7 m × 4.7 m Sedimentation Tank (Chemical Sedimentation) Dimensions: 24 m × 8 m Depth (for reference only): 4 m Rapid Sand Filters (Two Parallel Units) Two identical units Each filter dimensions: 5 m × 4 m Annotate: Rapid sand filter – polishing step Additional requirements: Show arrows indicating wastewater flow direction. Place the two sand filters in parallel after the sedimentation tank. Label each unit clearly with its name and dimensions. Add a note below the figure: “Conceptual layout – not to scale. Dimensions are preliminary assumptions for layout purposes.” Style: Clean, technical, schematic style No internal mechanical details Rectangular shapes only See more