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Power Plant Construction and QA/QC Section 2.6– Water Treatment

This section provides an overview of water treatment in power plant construction, including the importance of chemistry control, pretreatment, demineralization, condensate polishing, and boiler protection. It explains the basics of water chemistry and the different contaminants found in source water. The section also covers various methods of demineralization and condensate polishing, as well as the importance of proper boiler protection. Any questions regarding water treatment can be addressed here.

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Power Plant Construction and QA/QC Section 2.6– Water Treatment

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  1. Engineering Technology Division Power Plant Construction and QA/QC Section 2.6– Water Treatment

  2. Section 2.6– Water Treatment Overview • Introduction • Chemistry Basics • Pretreatment • Demineralization • Condensate Polishing • Boiler Protection

  3. Section 2.6– Water Treatment Introduction • Water Treatment is the attempt to remove anything that is not water molecules. • Chemicals and compounds in water create corrosive environments. • pH is a measure of acidity or alkalinity. • Failure to maintain chemistry control can lead to reduced efficiency and/or premature failure. • Understanding the source water chemistry is the key to determining Water Treatment requirements.

  4. Section 2.6– Water Treatment Chemistry Basics – Water Source

  5. Section 2.6– Water Treatment Chemistry Basics – Water Source

  6. Section 2.6– Water Treatment Chemistry Basics – River Water

  7. Section 2.6– Water Treatment Chemistry Basics – Tap Water

  8. Section 2.6– Water Treatment Chemistry Basics – Industrial Contaminants

  9. Section 2.6– Water Treatment Chemistry Basics – Other Contaminants

  10. Section 2.6– Water Treatment Chemistry Basics – Other Contaminants

  11. Section 2.6– Water Treatment Pretreatment

  12. Section 2.6– Water Treatment Pretreatment – Waste Water Varies by use

  13. Section 2.6– Water Treatment Demineralization – Resin Type Negative Valance Positive Valance

  14. Section 2.6– Water Treatment Demineralization – Reverse Osmosis Process

  15. Section 2.6– Water Treatment Demineralization – Reverse Osmosis

  16. Section 2.6– Water Treatment Demineralization – Evaporation Typically operates in a vacuum to reduce source heat.

  17. Section 2.6– Water Treatment Demineralization –Distillation

  18. Section 2.6– Water Treatment Condensate Polishing

  19. Section 2.6– Water Treatment Condensate Polishing

  20. Section 2.6– Water Treatment Boiler Protection • When source water is properly analyzed and water treatment address the impurities, then Boiler Protection is provided. • To Improve protection, additional chemicals can be added (Oxalates, pH controls, H2, etc) • Oxygen and Carbon Dioxide reduction in the De-aeration process reduces corrosive environments.

  21. Section 2.6– Water Treatment Questions?

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