Project Overview
- The technical upgrade of the clean recirculating water system is designed with a treatment capacity of 9,400 m³/d.
- The technical upgrade of the dirty recirculating water system is designed with a treatment capacity of 10,000 m³/h.
Key Technical Challenges
- The upgrade work must be carried out without interrupting steelmaking production, requiring parallel construction involving the reuse of existing equipment, replacement of outdated units, and installation of new systems across multiple batches. This imposes extremely high demands on construction planning, schedule control, and production assurance.
- The project must simultaneously meet the water quality stabilization, corrosion and scale prevention, and operational efficiency requirements of recirculating water systems of varying scales, making process commissioning and system integration particularly challenging.
Process Flow
- Clean recirculating water:Clean recirculating water → Softening & Clarification Tank → Intermediate Tank → Sand Filter (reused) → Carbon Filter (reused) → UF Feed Tank → UF System → UF Permeate Tank → RO System → RO Permeate Tank → Recirculating Tank → Recirculating Service
- Dirty recirculating water:Rolling mill dirty recirculating water → Cyclone Well (reused) → High-Density Clarification Tank → Hot Water Tank (reused) → Cooling Tower (reused) → Supply to Various Water Use Points
