Abstract
The techniques of wastewater treatment have been considered, recently. The performance of usage of nano ferric oxide and aluminum oxide as coagulant is evaluated in this work, experimentally. The experiments were conducted to measure the important parameters in quality of treatment by addition of four different amounts of nano two metal oxides 1, 1.5, 2 and 2.5 gr. The value of pH, color, color/color0, zeta potential, slug volume index, total dissolved solids conductivity, turbidity, ammonia, sulfide, heavy metals, phenol, oil and grease is investigated. The results show the better performance of nano ferric oxide in coagulation and flocculation by lower amount of zeta potential, ammonia, phenol and sulfide and oil, grease elimination than aluminum oxide. However the value of slug volume index in treated wastewater by nano ferric oxide is higher than that is obtained with nano aluminum oxide
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