Effect of Tide on Sewage Disposal by Bio-Film Process Dosing with Enzyme

Abstract:

The paper studied the effect of tide on the removal rate of COD, NH₃-N and TP in the dosing pool in order to provide data to simulate disorderly discharged sewage in tidal rivers. Due to the dilute effect of rivers, the removal rate of COD, NH₃-N and TP at the tidal state was higher than that at no tidal state. At the tidal state, the average removal rate of COD, NH₃-N and TP was 60.8%, 55.7%, 55.6%. At no tidal state, the average removal rate of COD, NH₃-N and TP was 57.5%, 47.5%, 8.6%. At the tidal state, the upper bio-film was exposed to air and the activity of microorganism decreased, and the activity of microorganism was high at middle-level bio-film. Therefore, the utilization of bio-film at the tidal state was lower than that at no tidal state. However, due to the tidal action, rivers entered into the dosing pool and the dilute effect of rivers on the pollutants was obvious.

• Periodical: Advanced Materials Research (Volumes 391-392)
• Pages: 126-129
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.391-392.126
• Online since: December 2011
• Authors: Zheng Hua Liu, Gai Mei Guo, Hong Ying Chen
• Keywords: Chemical Oxygen Demand (COD), NH₃-N, Sewage, Tide, TP

References

[1] J.J. Cairns: Environ. Profess. Vol. 13 (1991), p.1186.

[2] B.E. Rittmann and P.L. Mccarty: MeGraw-Hill Com Inc. Vol. 5 (2001), p.695.

[3] B.N. Aronstein and M. Alexander: Appl. Microbiol Biotechnol. Vol. 39 (1998), p.386.

[4] A. Field, F.J. Gervantes and F.P. Vander Zee: Water Sci. Technol. Vol. 42 (2000), p.215.

[5] D.R. Lovley, J.C. Woodward and F.H. Chapelle: Appl. Environ. Microbiol. Vol. 62 (1996), p.288.

[6] M.A. Aly: Water Res. Vol. 32(1998), p.944.

[7] Y. Hyungseok: Water Res. Vol. 33 (1999), p.145.

[8] S.H. Lee and J. Kim: Bioresource Technol. Vol. 99 (2007), p.2578.