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Application of refrigeration in waste-water treatment and recycling.

[In Chinese. / En chinois.]

Author(s) : YU T., MA J.

Type of article: Article

Summary

Optimal refrigeration temperature, waste-water treatment effect, maximum water recovery rates, and energy consumption in freeze concentration technology based on refrigeration were investigated by the refrigeration experiment and the differential scanning calorimetry experiment. The results show that the suitable refrigeration temperature should be 5-7°C lower than the freezing point of the waste water. By single stage freezing, more than 97% of NH3-N, 97% of organic materials, and 93% of salts in the waste water could be removed. For the waste water with the concentration of 3%, 97.75% of water could be extracted by freeze concentration. It is likely that freeze concentration has the characteristics of excellent water treatment effect, higher water recovery rates and lower energy consumption.

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Pages: 47-50

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Details

  • Original title: [In Chinese. / En chinois.]
  • Record ID : 2009-0407
  • Languages: Chinese
  • Source: Journal of Refrigeration - vol. 29 - n. 4
  • Publication date: 2008/08

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