Study on Low-temperature Alkali Adding Lysis at and Ultrasonic-alkali Coupling Lysis for Excess Sludge

XI Bo; LI Guang-wei; ZHI Su-li; Lü Xue-bin; ZHANG Shu-ting

doi:10.3969/j.issn.1674-991X.2011.06.080

Volume 1 Issue 6

Nov. 2011

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Article Navigation > Journal of Environmental Engineering Technology > 2011 > 1(6): 479-483

XI Bo, LI Guang-wei, ZHI Su-li, Lü Xue-bin, ZHANG Shu-ting. Study on Low-temperature Alkali Adding Lysis at and Ultrasonic-alkali Coupling Lysis for Excess Sludge[J]. Journal of Environmental Engineering Technology, 2011, 1(6): 479-483. doi: 10.3969/j.issn.1674-991X.2011.06.080

Citation:

XI Bo, LI Guang-wei, ZHI Su-li, Lü Xue-bin, ZHANG Shu-ting. Study on Low-temperature Alkali Adding Lysis at and Ultrasonic-alkali Coupling Lysis for Excess Sludge[J]. Journal of Environmental Engineering Technology, 2011, 1(6): 479-483. doi: 10.3969/j.issn.1674-991X.2011.06.080

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Study on Low-temperature Alkali Adding Lysis at and Ultrasonic-alkali Coupling Lysis for Excess Sludge

doi: 10.3969/j.issn.1674-991X.2011.06.080

School of Environmental Science and Engineering, Tianjin University

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Corresponding author: ZHANG Shu-ting E-mail: zhangst@tju.edu.cn
Received Date: 2011-07-26
Rev Recd Date: 2011-08-16
Publish Date: 2011-11-20

Abstract

Abstract

Two sludge lysis methods, low temperature (30-60 ℃) alkali adding (pH as 10-12) lysis and ultrasoni-alkali coupling lysis, were studied. The results indicated that the SCOD_Crproduced by unit alkali was the highest under the condition of 50 ℃ and pH 10 for low-temperature alkali adding lysis. The introduction of ultrasonic wave not only greatly improved the effect of lysis, but also decreased the requirements for the temperature during the lysis. For the ultrasonic-alkali coupling lysis, the SCOD_Cr produced by unit alkali was the highest under the condition of 22 ℃ and pH 10.
- sludge lysis,
- low temperature and alkali,
- ultrasonic-alkali coupling