GEP  Vol.3 No.1 , March 2015
Biological Toxicity of Sewage Sludge Stabilized by Reed Bed on the Luminescent Bacteria
Abstract: With the expanding scale of urban wastewater treatment, the resulting excess sludge quantity is also growing. Excess sludge treatment and disposal has become an important part of the sewage treatment. Sludge itself is rich in essential nutrients of plant growth such as nitrogen and phosphorus, so it’s a good organic fertilizer; but it often also contains harmful substances such as heavy metals. If the sludge treatment is not good, it not only can bring secondary pollution to the environment, but also can cause the waste of resources. Luminescent bacteria tests are conducted in this research by comparing the effects on the absorption and transformation of toxic substances between traditional sludge drying bed and reed bed. The study finds that the biological toxicity of surface layer sludge either in reed bed or in traditional drying bed has little change with the seasons and maintains in low level. While the biological toxicity in the bottom of sludge has change with the seasons and achieves the lowest level in summer and fall, and the biological toxicity of sludge in reed bed is lower than that of traditional drying bed.
Cite this paper: Li, J. , Cui, Y. , Zhang, W. , Dong, Y. and Jia, S. (2015) Biological Toxicity of Sewage Sludge Stabilized by Reed Bed on the Luminescent Bacteria. Journal of Geoscience and Environment Protection, 3, 1-6. doi: 10.4236/gep.2015.31001.

[1]   Liu, J. (2011) Technical Analysis on Sewage Sludge Composting and Resource Utilization Technology in Wastewater Treatment Plant. Journal of Yangtze University: Natural Science Edition, 8, 246-248.

[2]   Sun, H.J., Cui, Y.B., Wang, F., et al. (2011) Comparison of Residual Sludge Dewatering and Stabilization between Reed Beds and conventional Sludge Drying Bed. Journal of Safety and Environment, 11, 81-84.

[3]   Nielsen, S. and Willoughby, N. (2005) Sludge Treatment and Drying Reed Beds Systems in Denmark. Water and Environmental Journal, 19, 296-305.

[4]   Uggetti, E., Ferrer, I., Molist, J. and García, J. (2011) Technical, Economic and Environmental Assessment of Sludge Treatment Wetlands. Water Research, 45, 573-582.

[5]   Tefanakis, A.I., Akratos, C.S., Melidis, P. and Tsihrintzis, V.A. (2009) Surplus Activated Sludge Dewatering in PilotScale Sludge Drying Reed Beds. Journal of Hazardous Materials, 172, 1122-1130.

[6]   Cui, Y.B., Sun, H.J., Yang, M.L. and Liu, Y.H. (2012) Plant Growth for Sewage Sludge Ecological Stabilization. Journal of Residuals Science &Technology, 9, 47-53.

[7]   Song, Z.W., Wan, R.Q., Xi, J.X., Han, X.Y. and Yao, C. (2005) Nitrogen and Phosphorous Removal Efficiency and Dynamic Feature of Constructed Wetlands for Sewage Treatment. Chinese Journal of Ecology, 24, 648-651.

[8]   Sun, Q., Zheng, Z. and Zhou, T. (2001) The Procedure of Wastewater Treatment for Constructed Wetland. Pollution Control Technology, 14, 20-23.

[9]   Yu, S.-P., Sun, G.-Y. and Dou, S.-Z. (2004) Treatment Technology of Wastewater Using Constructed Wetland and Its Application in Dongping Lake. Wetland Science, 2, 228-233.

[10]   Vacca, G., Wand, H., Nikolausz, M., Kuschk, P. and K?stner, M. (2005) Effect of Plants and Filter Materials on Bacteria Removal in Pilot Scale Constructed Wetlands. Water Research, 39, 1361-1373.

[11]   Sun, G.Z., Zhao, Y.Q. and Allen, S. (2005) Enhanced Removal of Organic Matter and Ammoniacal-Nitrogen in a Column Experiment of Tidal Flow Constructed Wetland System. Journal of Biotechnology, 115, 189-197.

[12]   Seo, D.C., Cho, J.S., Lee, H.J. and Heo, J.S. (2005) Phosphorus Retention Capacity of Filter Media Forest Imating the Longevity of Constructed Wetland. Water Research, 39, 2445-2 457.

[13]   Cheng, S.P., Grosse, W., Karrenbrock, F. and Thoennessen, M. (2002) Efficiency of Constructed Wetlands in Decontamination of Water Polluted by Heavy Metals. Ecological Engineering, 18, 317-325.

[14]   Jin, G., Kelley, T., Vargas, N. and Callahan, M. (2003) Preliminary Evaluation of Metals Removal in Three Pilot-Scale Constructed Wetland Systems. Management of Environmental Quality: An International Journal, 14, 323-332.

[15]   Wu, J.Q., Ruan, X.H., Wang, X. (2005) Selection and Function of Aquatic Plants in Constructed Wetlands. Water Resources Protection, 21, 1-6.