Paper Title:
Experimental Study on Secondary Effluent Disinfection with Ultrasound and Chlorine
  Abstract

Ultrasonic disinfection is safe and effective, but requires high power consumption. For economic considerations, ultrasound and chlorine can be combined to promote a wider range of applications. In this paper, we investigated the disinfection effect of secondary effluent with low-frequency ultrasound and sodium hypochlorite. The optimal conditions were determined by changing the ultrasound intensity, exposure time, chlorine dosage, and chlorine contact time. The results showed that ultrasound can significantly enhance the effects of chlorine disinfection. When the coliform bacteria is 106~107CFU/L, the dosage of chlorine at 4~6mg/l can meet the national discharge standard (less than 104 CFU /L). However, the chlorine dosage can be further reduced to 1~2mg/l if we add 30 s of ultrasonic radiation, thereby reducing the disinfection by-products. Orthogonal experimental results show that the relative importance of the disinfection factors: chlorine dosage> ultrasonic irradiation time >chlorine contact time> ultrasound intensity.

  Info
Periodical
Advanced Materials Research (Volumes 383-390)
Chapter
Chapter 13: Environmentally Sustainable Manufacturing Processes and Systems
Edited by
Wu Fan
Pages
3786-3791
DOI
10.4028/www.scientific.net/AMR.383-390.3786
Citation
Z. F. Li, X. Zhao, F. R. Deng, X. Jin, H. Wu, "Experimental Study on Secondary Effluent Disinfection with Ultrasound and Chlorine", Advanced Materials Research, Vols. 383-390, pp. 3786-3791, 2012
Online since
November 2011
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Price
$32.00
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