What size multi-media filter for a 3 ton reverse osmosis treatment plant? (Reverse osmosis water treatment equipment category)

Sand filter barrel φ600×1850 1 unit FRP HTCOMA

Carbon filter barrel φ600×1850 1 unit FRP HTCOMA

Softener barrel φ600×1850 1 unit FRP HTCOMA

Quartz sand 0.5-1.0mm 600 kg Quartz sand

Activated carbon 8-16 mesh 200 kg Coconut shell carbon

Softening resin 001*7 300 liters resin