Design a water reclamation and reuse system for an industrial park.

System design approach: characterize combined wastewater (domestic + industrial), assess reuse applications and quality requirements. Treatment train: conventional secondary treatment, tertiary filtration (multimedia/membrane), disinfection (UV + chlorination for dual barrier), and advanced treatment (RO/NF if high TDS). For cooling tower makeup: remove hardness to prevent scaling. For process water: RO permeate may need polishing. Distribution system: purple pipe code, cross-connection control, signage. Include storage tanks, monitoring for key parameters, and blending provisions. Economics: compare reuse cost vs freshwater tariff.