Biblio

M. A. A. Coetzee, Van der Merwe, M. P. Roux-, and Badenhorst, J., “The effect of air supply on nitrogen removal using a biological filter proposed for ventilated pit latrines”, Water SA, pp. p. 281 - 288 : 7 fig., 2 tab., 2011.

O. Zimmo, Nitrogen transformations and removal mechanisms in algal and duckweed waste stabilisation ponds. Lisse, The Netherlands: Swets and Zeitlinger, 2003, p. 131 p. : fig., tab.

M. Meybeck, Kimstach, V., and Baroudy, E., A water quality assessment of the former Soviet Union. London, UK: E & FN Spon, 1998, p. xvii, 611 p. : fig., tab.

K. V. Ellis and Aydin, M. E., “A study of three slow sand filters at various flow rates with constant temperature”, Aqua : journal of water supply research and technology, pp. p. 88-96: 5 fig., 4 tab., 1993.

H. D. Mariam, Municipal wastewater treatment in sequencing batch activated sludge process package plants, vol. no. 47. Tampere, Finland: Tampere University of Technology, Institute of Water and Environmental Engineeri, 1992, p. 62 p.: 35 fig., 7 tab.

H. Melcer, Topnik, B. H., and Bedford, W. K., Conversion of small municipal wastewater treatment plants to sequencing batch reactors, vol. EPS 3/NR/2. Ottawa, Ont, Canada: Environment Canada, 1987, p. viii, 33 p.: fig., tab.

J. H. Smith and Loehr, R. C., Principles and practices of irrigating agricultural land with food processing waste effluent : a review, vol. no. 22. Bangkok, Thailand: Environmental Sanitation Information Center, ENSIC, 1987, p. 63 p.: fig., tab.

G. B. Internatio London, “The 12th IAWPRC Biennial International Conference : Amsterdam, 17-20 September, 1984”. p. 3 vol. (1231 p.: ill), 1984.

G. DeWolf, Murin, P., Jarvis, J., and Kelly, M., “The cost digest : cost summaries of selected environmental control technologies”. US Environmental Protection Agency (EPA), Washington, DC, USA, p. xii, 92 p.: fig., tab., 1984.

N. C. Thanh, Bidwell, R., and Tharun, G., Environmental management for developing countries. Bangkok, Thailand: Asian Institute of Technology, 1983, p. 3 vol.(viii, 450;viii, 388;viii, 266 p.): fig., tab.