Biblio

J. Poinapen and Ekama, G. A., “Biological sulphate reduction with primary sewage sludge in an upflow anaerobic sludge bed reactor. Part 5. Steady-state model”, Water SA, pp. p. 193 - 202 : 3 fig., 1 tab., 2010.

X. Meng, Bang, S., and Korfiatis, G. P., “Effects of silicate, sulfate, and carbonate on arsenic removal by ferric chloride”, Water research, pp. p. 1255-1261 : 10 fig., 2 tab., 2000.

J. A. Meyer, Casey, N. H., and Coetzee, C. B., “Water quality guidelines for livestock watering in Southern Africa”, Water SA, pp. p. 7-12 : 2 fig., 3 tab., 1997.

D. D. Mara, Silva, S. A., and de Oliveira, R., Performance of waste stabilization ponds in Northeast Brazil, vol. no. 9. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. ix, 139 p. : fig., tab.

M. R. Schock, Lytle, D. A., and Clement, J. A., “Effect of pH, DIC, orthophosphate and sulfate on drinking water cuprosolvency”. US Environmental Protection Agency (EPA), Cincinnati, OH, USA, p. x, 95 p. : 22 fig., 10 tab., 1995.

F. W. Pontius, “An update of the federal drinking water regs”, Journal American Water Works Association, pp. p. 48-58: 6 tab., 1995.