After about 500 cycles have been continuously performed on a laboratory pilot plant, ion exchange resins have proved to be an effective means to treat municipal secondary effluents to prevent eutrophication in the receiving water bodies. Clinoptilolite, a natural zeolite, and Kastel A 510, a strong base anion resin with adsoptive properties, act selectively to remove ammonium and phosphate ions, at the same time affording filtration and adsorption of the wastewater. NaCl at sea-water concentration is used as resin regenerant. After the recovery of products of fertilizing value, as MgNH4PO4 and NH4 NO3, from the eluates, the latter can be recycled.
Nutrient removal and recovery from wastewater by ion exchange / Liberti, Lorenzo; Boari, Gianfranco; Petruzzelli, Domenico; Passino, Roberto. - In: WATER RESEARCH. - ISSN 0043-1354. - STAMPA. - 15:3(1981), pp. 337-342. [10.1016/0043-1354(81)90038-5]
Nutrient removal and recovery from wastewater by ion exchange
Lorenzo Liberti;Domenico Petruzzelli;
1981-01-01
Abstract
After about 500 cycles have been continuously performed on a laboratory pilot plant, ion exchange resins have proved to be an effective means to treat municipal secondary effluents to prevent eutrophication in the receiving water bodies. Clinoptilolite, a natural zeolite, and Kastel A 510, a strong base anion resin with adsoptive properties, act selectively to remove ammonium and phosphate ions, at the same time affording filtration and adsorption of the wastewater. NaCl at sea-water concentration is used as resin regenerant. After the recovery of products of fertilizing value, as MgNH4PO4 and NH4 NO3, from the eluates, the latter can be recycled.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
