Wuxi Water Treatment Works Control & Automation System

Specify, design, build the control system from User Requirements Specification for the end to end control of an 800 MLD Water Treatment Plant. Processes included Intake Pumping Station, Chemical Makeup, Storage and Dosing, Sedimentation Settling Tanks, 12 modulated Reverse Gravity Filter Beds, Compressor Sets, Air Blowers and a Contact Dosing Tank and Clean Water Pumping Station to the main district supply system. The Intake and Clean Water stations included controls for 8 off 10KV motors. Database and scripts were used for Dual Hot Standby Intouch Master Operating Stations with Data Logging, Alarms Server and Historical Trending including 7 PanelView Local Operating Stations for local control.

Project Details

  • Contract No. C087
  • Primary Service Construction & Commissioning, Detailed Design & Engineering, Implementation
  • Industry Water Treatment
  • Secondary Service As Built Documentation, Commissioning Management, Control Systems Engineering, Factory & Site Acceptance Testing, Pre-Commissioning & Commissioning, Projects Plans Procedures Specifications & Detailed Designs, SCADA HMI System Engineering, Start Up Audit Start Up & Process Optimisation
  • Client Wuxi Water Supply
  • Start Date Oct 1998
  • Consultant or EPC Purac
  • Contract Value ($) 140000
  • Project Location H9J7+2FP, Youyi S Rd, Xishan District, Wuxi, Wuxi, Jiangsu, China, 214003
  • Person Hours 4600
  • Execution Office Birmingham, United Kingdom
  • Status Completed

Scope of work

    System Integration of a complete end-to-end 800 MLD Water Treatment plant in China from design to commissioning.


  • Development of a Control Philosophy
  • Development of Functional Design Specification
  • Development of Systems Design Specification
  • PLC, SCADA & HMI Control System Design
  • Software Development
  • Process Simulation Software Development
  • Control Panel Design & Build
  • Factory Acceptance Testing
  • System Installation Supervision
  • Site Acceptance Testing
  • Commissioning
  • Conduct Start-up
  • Process Optimisation


  • Systems Architecture
  • Control Philosophy
  • Functional Design Specification
  • Systems Design Specification
  • IO Schedule
  • PLC Software
  • SCADA & HMI Screens Design
  • Factory Acceptance Test Report
  • Site Acceptance Test Report
  • Alarm & Trip Settings
  • Commissioning Records
  • As-Built Documentation
  • Training

Technical specifications

  • 1100 Inputs/Outputs
  • 7 Allen Bradley 5/60e PLC’s
  • 2 Intouch SCADA Synchronised Dual Hot Standby
  • 7 HMI PanelView 800 Displays