The development and application on excessive sludge disintegration of a new-style cavitator

Yong Gang Huang, Hong Wei Yang, Yue Wang, Xiao Min Hu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

How to treat and reuse the excessive sludge effectively and economically has become the most important task in wastewater treatment investigation. It is the significant precondition and key to the follow-up treatment. A new-style cavitator was developed which had ventilation and rotating function to disintegrate excessive sludge cells. These designs could avoid blocking and save energy. The cavitator was used to disintegrate the excessive sludge cells, and the disintegration effect was evaluated by the dissolution rate of the intracellular matters. The operating parameters were optimized through the orthogonal experiments. While the cavitation number was1.8 and the ventilation ratio was 1.4%, the unit energy consumption was 600W/kg. If 1 m3 of excessive sludge was treated for 30 minutes, 1000 MJ of energy would be consumed, which was lower than that of ultrasonic method by 40%. In the first 10 minutes, the average dissolution rate of SCOD was 0.06%/s.

Original languageEnglish (US)
Title of host publicationAdvances in Environmental Technologies
Pages2347-2350
Number of pages4
DOIs
StatePublished - Oct 8 2013
Event2013 2nd International Conference on Energy and Environmental Protection, ICEEP 2013 - Guilin, China
Duration: Apr 19 2013Apr 21 2013

Publication series

NameAdvanced Materials Research
Volume726-731
ISSN (Print)1022-6680

Other

Other2013 2nd International Conference on Energy and Environmental Protection, ICEEP 2013
CountryChina
CityGuilin
Period4/19/134/21/13

Keywords

  • Cavitaiton3 device
  • Cells disintegration
  • Excessive sludge
  • Hydrodynamic cavitation

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Huang, Y. G., Yang, H. W., Wang, Y., & Hu, X. M. (2013). The development and application on excessive sludge disintegration of a new-style cavitator. In Advances in Environmental Technologies (pp. 2347-2350). (Advanced Materials Research; Vol. 726-731). https://doi.org/10.4028/www.scientific.net/AMR.726-731.2347