1.0.1 To control fouling, scaling and corrosion caused by water quality in industrial recirculating cooling water system and to guarantee the efficiency of heat exchange and the life of equipment and also to make the design of industrial recirculating cooling water treatment be advance in technology and reasonable in economy, this Code is worked out.
1.0.2 This Code applies to the design of industrial recirculating cooling water treatment of indirect heat exchange of newly built, expanded and rehabilitated projects.
1.0.3 The design of industrial recirculating cooling water treatment shall meet the requirements of safe production, environment protection, energy saving and water saving as well as to facilitate the construction, maintenance and management.
1.0.4 On the basis of continuous summing up practical production experience and scientific experiments, new technologies.shall be used actively and cautiously in the design of industrial recirculating cooling water treatment.
1.0.5 The design of industrial recirculating cooling water treatment shall, apart from compliance with this Code, also meet what specified in national standards and specifications in force.
1. General 5
2. Terms and Symbols 5
2.1 Terms 5
2.2 Symbols 7
3. Recirculating Cooling Water Treatment 8
3.1 General Rules 8
3.2 Design of Open System 11
3.3 Design of Close Cycle System 12
3.4 Fouling Retarding and Corrosion Inhibiting 12
3.5 Treatment of Algal Fungi 14
3.6 Cleaning and Pre-filming Treatment 15
4. Side Stream Treatment 16
5. Make-up Water Treatment 17
6. Drain Treatment 18
7. Storage and Dosing of Chemicals 19
8. Monitoring, Control and Chemical Analysis 21
Appendix A Items for Water Quality Analysis 23
Appendix B Description of Wording in this Code 24
Additional Description 25
