1. 1) Dahnke, D.R. et al. (1986) Selective iron removal from process solutions by phosphate precipitation, Iron Control Hydrometall, 477-507.
2. 2) Bancsi, J.J. et al. (1975) Polyelectrolytes in wastewater treatment the settleability of iron precipitated phosphorus floes, Water Pollut.Res.Can., 10, 17-27.
3. 3) Arvin, E. et al. (1989) An equilibrium model for the removal of soluble phosphate with ferrous iron in simultaneous precipitation plants, Vatten, 2, 79, 125-137.
4. 4) Werner, V. et al. (1979) Kolloidchemische grundla gen der phosphor- elimination in fallung, flockung and Filtration, Z.F. Wasser and Abwasser- Forschung, 12, 73-83.
5. 5) Ghassemi, M. et al. (1971) Phosphate precipitation with ferrous iron, Water Pollut. Res, Series, 17010EKI, 1-64.