FUNCTIONAL PAPER TO ADSORB NITROGEN AND PHOSPHOROUS IN THE WATER

Abstract

Two kinds of functional papers are newly developed to adsorb nitrogen and phosphorous in the water. Zeolite functional paper (Z500-paper) adsorb NH4-N and PAdeCS® (Phosphorus Adsorbent derived from Concrete Sludge) functional paper (P260-paper) adsorb PO4-P. A series of adsorption tests were carried out for the solution of NH4-N and PO4-P. Main conclusions are as follows. P260-paper adsorbs PO4-P in very short time. The adsorption capacity of Z500-paper for NH4-N decreases by the combined use of P260-paper. When P260-paper is used, pH of the solution raises from 7 to 11–12. When applying at water purification work, it is effective to use independently in order of Z500-paper and P260-paper, respectively, and then to carry out a neutralization process.