Treatment of Tannery Wastewater with Salt Tolerant Bacteria Basing on Different Culture Mediums


Article Preview

This study was done to access the influence of salinity on the treatment of tannery wastewater, activity of sludge and morphological characteristics of the salt-tolerant bacteria cultivated using tannery wastewater as culture mediums and intermittent aeration as method. The results indicated that, aerobic sludge which contained salt-tolerant bacteria was cultivated under the conditions of temperature of 35°C and pH = 8, the COD removal in simulated and actual tannery wastewater was more than 87% and 85% by the cultivated aerobic sludge, respectively. In addition, the morphological characteristics were related to the composition and concentration of the salt. The average generation time of bacteria was 24.6min ~ 28.6min when the concentration of MLSS was 2.0 ~ 3.0g/L and the concentration of pure NaCl was 1 ~ 5g/L. As the volume ratio of NaCl and Na2SO4 was 4:1 ~ 1:4 with the total concentration of 5g/L, the average generation time of bacteria was 30.8min ~ 39.7min. The relation equation between salt concentration and the average generation time of bacteria under the pure salt, composite salt and actual tannery wastewater conditions was also deduced through four assumptions. The results had significant application on tannery wastewater treatment with great reduction of pollution.



Advanced Materials Research (Volumes 403-408)

Edited by:

Li Yuan




J. G. He et al., "Treatment of Tannery Wastewater with Salt Tolerant Bacteria Basing on Different Culture Mediums", Advanced Materials Research, Vols. 403-408, pp. 625-633, 2012

Online since:

November 2011




[1] Anqing Zhong. A thought on green development of leather industry. Chinese examination and quarantine, 2006, 06: 52~53.

[2] Zhongbo Gao, Chaoying Su. Tannery industrial wastewater treatment. Chemical Industry Press, 2003: 35~41.

[3] Lidia Szpyrkowiczi, Santosh N. Kaul, Rao N. Neti. Tannery wastewater treatment by electro oxidation coupled with a biological process. Journal of Applied Electrochemistry, 2005, 35: 381~390.


[4] Claudio Di Iaconi, Roberto Ramadori, Antonio Lopez. The effect of ozone on tannery wastewater biological treatment at demonstrative scale. Bioresource Technology, 2009, 100: 6121~6124.


[5] Wang Liu. High salinity wastewater treatment technology[J]. Water & Wastewater Engineering, 2001, 27(11): 54-56.

[6] Senthilkumar Sivaprakasam, Surianarayanan Mahadevan, Sudharshan Sekar, Susheela Rajakumar. Biological treatment of tannery wastewater by using salt-tolerant bacterial strains. Microbial Cell Factories, (2008).


[7] Eryang Li, Jiehong Cheng, Le Shi, Jiang He. Study on salt-tolerant bacteria. Journal of Jiangsu Institute of Petrochemical Technology, 2001, 13(4): 4~6.

[8] Shahida Hasnain, Christopher M. Thomas. Two related rolling circle replication plasmids from salt-tolerant bacteria. Plasmid, 1996, 36(3): 191~199.


[9] Weber J B. Mechanisms of adsorption of s-t riazines by clay colloids and factors affecting plant availability. Residue Re2 views, 1970, 32: 93~130.

[10] An Lichao, Lu Lude, Wang Xin. Activated carbon enhanced biological treatment of organic wastewater of high salinity. Journal of Nanjing University of Science and Technology, 2003, 27(6): 715~719.

[11] APHA: Standard Methods for the Analysis of Water and Wastewater. 20th edition. American Public Health Association Alexandria. VA, (1998).

[12] Jianlong Wang, Xinmin Zhan. Effect of salinity variations on the performance of activated Sludge system. Biomedical and Environmental Sciences. 2005, 18: 5~8.

[13] Nanqi Ren, Fang Ma, Jixian Yang. Pollution Control Microbiology. Harbin, Harbin Institute of Technology Press, 2004. 147~149.

[14] Bin Liu. Study on starch wastewater by Coagulation-Aerobic-micro-electrolysis-aerobic combined process. Harbin: Harbin Institute of Technology, (2008).