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Solutions to fouling in power station condensers.

Author(s) : CRISTIANI P.

Type of article: Article

Summary

Chlorine use was banned in the Italian Lagoon of Venice; as a result, alternative antifouling treatments had to be tested, optimized and, finally, adopted. Now, chlorine dioxide is in use in many plants instead of sodium hypochlorite. Peracetic acid (as antislime) and ammonium quaternary salts (as molluschicide) are also employed in some cases. The treatments are often combined with in-service mechanical cleaning, reducing significantly their cost. The dosage of the alternative oxidant products, now in use, has been optimized by the electrochemical monitoring system BIOX. As requested by Italian regulations, toxicity tests were performed and passed successfully before the adoption of each new treatment. Furthermore, new type of treatments, based on electrochemical low production of oxidant, were also preliminary tested, without significant production of trihalomethanes. The paper provides some details on the new treatments.

Details

  • Original title: Solutions to fouling in power station condensers.
  • Record ID : 2006-0718
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 25 - n. 16
  • Publication date: 2005/11

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