Effect of Placement Pattern and Quantity of Iron Shavings in Reactor on Biological Nutrient Removal from Domestic Wastewater

Abstract:

Effect of placement pattern and quantity of iron shavings in reactor on biological nutrient Removal from domestic wastewater was conducted. The results indicate that: different placement pattern had obvious effect on TP removal, but had no distinct effect on TN removal; when iron was placed beside aerator, the highest TP removal can be obtained. Adding more iron can just slightly enhance TP and TN removal when iron shaving quantity increased from 5 g to 20 g per 900 ml wastewater; iron adding restrained transfer of ammonia to nitrate by microbe and this defect should be overcome in practice; 5 g iron per 900 mL is the best choice to balance good nutrient removal and low cost.

• Periodical: Applied Mechanics and Materials (Volume 164)
• Pages: 186-189
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.164.186
• Online since: April 2012
• Authors: Zi Wang, Zhe Chen, Hong Wu Wang, Lu Ming Ma
• Keywords: Biological Treatment, Enhancement, Iron Shavings, Placement Pattern

References

[1] Henderson, A.D. and A.H. Demond, Long-term performance of zero-valent iron permeable reactive barriers: A critical review. Environmental Engineering Science, 2007. 24(4): pp.401-423.

DOI: 10.1089/ees.2006.0071

[2] Della Rocca, C., V. Belgiorno, and S. Meric, Overview of in-situ applicable nitrate removal processes. Desalination, 2007. 204(1-3): pp.46-62.

DOI: 10.1016/j.desal.2006.04.023

[3] Liang, L.Y., et al., Geochemical and microbial reactions affecting the long-term performance of in situ iron barriers,. Advances in Environmental Research, 2000. 4(4): pp.273-286.

DOI: 10.1016/s1093-0191(00)00026-5

[4] Till, B.A., L.J. Weathers, and P.J.J. Alvarez, Fe(0)-supported autotrophic denitrification. Environmental Science & Technology, 1998. 32(5): pp.634-639.

DOI: 10.1021/es9707769

[5] Yamashita, T. and R. Yamamoto-Ikemoto, Phosphate removal and sulfate reduction in a denitrification reactor packed with iron and wood as electron donors. Water Science and Technology, 2008. 58(7): pp.1405-1413.

DOI: 10.2166/wst.2008.728

[6] Cornell, R.M. and U. Schwertmann, The iron oxides : structure, properties, reactions, occurrences, and uses. 2nd, completely rev. and extended ed. 2003, Weinheim: Wiley-VCH. xxxix, 664 p.

[7] Rittmann, B.E., et al., Capturing the lost phosphorus. Chemosphere, 2011. 84(6): pp.846-853.

DOI: 10.1016/j.chemosphere.2011.02.001

[8] Rentz, J.A., I.P. Turner, and J.L. Ullman, Removal of phosphorus from solution using biogenic iron oxides. Water Research, 2009. 43(7): p.2029-(2035).

DOI: 10.1016/j.watres.2009.02.021

[9] Biswas, S. and P. Bose, Zero-valent iron-assisted autotrophic denitrification. Journal of Environmental Engineering-Asce, 2005. 131(8): pp.1212-1220.

DOI: 10.1061/(asce)0733-9372(2005)131:8(1212)

[10] Shin, K.H. and D.K. Cha, Microbial reduction of nitrate in the presence of nanoscale zero-valent iron. Chemosphere, 2008. 72(2): pp.257-262.

DOI: 10.1016/j.chemosphere.2008.01.043

[11] Huang, C.P., H.W. Wang, and P.C. Chiu, Nitrate reduction by metallic iron. Water Research, 1998. 32(8): pp.2257-2264.

DOI: 10.1016/s0043-1354(97)00464-8

[12] Della Rocca, C., V. Belgiorno, and S. Meric, An heterotrophic/autotrophic denitrification (HAD) approach for nitrate removal from drinking water. Process Biochemistry, 2006. 41(5): pp.1022-1028.

DOI: 10.1016/j.procbio.2005.11.002

[13] Oikonomidis, I., L.J. Burrows, and C.M. Carliell-Marquet, Mode of action of ferric and ferrous iron salts in activated sludge. Journal of Chemical Technology and Biotechnology, 2010. 85(8): pp.1067-1076.

DOI: 10.1002/jctb.2399