Abstract |
A demonstration plant for the removal of nutrients from activated sludge effluent has been operated by Stanford University. During the past eleven months, significant accomplishments have included the redesign of filtration and ion-exchange equipment and replacement of the original equipment with optimized units, successful plant-scale restoration of the ion-exchange resin (twice), increase of the filtration unit and ion-exchange flow rates, reductions in operating chemical costs, demonstration of the effects of non-nutrient anions in the water to be processed, evaluation of the influence of trace nutrient materials (i.e., materials other than phosphorous and nitrates) upon algal growth potential. |