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Iron and Aluminum Compounds for Removing Phosphorus and Turbidity from Pond Waters. Claude E. Boyd, Puan Pengseng and Suthira Soongsawang Department of Fisheries and Allied Aquacultures Auburn University, Alabama 36849 USA. Al 3+ Al 3+. Turbidity Removal.    .

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iron and aluminum compounds for removing phosphorus and turbidity from pond waters
Iron and Aluminum Compounds for Removing Phosphorus and Turbidity from Pond Waters

Claude E. Boyd, Puan Pengseng

and Suthira Soongsawang

Department of Fisheries and Allied Aquacultures

Auburn University, Alabama 36849 USA

turbidity removal

Al3+ Al3+

Turbidity Removal

   

   

   

   

Al3+

_ Soil colloids + Al3+(Fe3+) _ Soil colloids

The neutral particles will flocculate and settle from the water.

phosphorus removal

Phosphorus Removal

AL3+ + H2PO4- + 2H2O  AlPO42H2O + 2H+

Fe3+ + H2PO4- + 2H2O FePO42H2O + 2H+

effect on total alkalinity

Effect on Total Alkalinity

Al3+ + 3H2O = Al(OH)3 + 3H+

CaCO3 + 2H+ = CO2 + H2O + Ca2+

1 mg/L Al3+ = 5.6 mg/L CaCO3

Same reaction for iron, but

1 mg/L Fe3+ = 2.7 mg/L CaCO3