COMPLEX ANALYTICAL PROCEDURE FOR THE CHARACTERIZATON OF MODIFIED ZEOLIZE AND FOR THE ASSESSMENT ITS EFFECTS ON BIOLOGICAL WASTEWATER TREATMENT
Abstract
Under a joint US-Hungarian R&D project financed by the NATO Science for Peace Programme an innovative zeolite modification method and a wastewater treatment technology based on the application of zeolite modified with cation active polyelectrolyte (CAP) were developed between 1999 and 2002.<BR /> In order to determine the chemical composition and the stability of the CAP modified zeolite (SMZ), as well as predict its effects on the biological treatment of wastewater, total organic carbon (TOC), Fourier transform infrared (IR) spectroscopic measurements, as well as laboratory and pilot scale biological degradability tests were carried out.<BR /> The data of TOC and IR measurements showed that using the patented zeolite modification method 1-3 mg CAP could be chemically attached to the surface of 1 g natural zeolite of 100 µm grain size. The stability test of SMZ showed that 93% of the CAP-zeolites bonds remained stable at even pH 9 after 3 days.<BR /> The pilot scale experiments in harmony with the laboratory ones applying SMZ resulted in significantly better effluent water quality and verified that SMZ additive was capable to increase the capacity of WTPs expressed in chemical oxygen demand (5-40%), biochemical oxygen demand (50-40%), organic nitrogen removal (40-70%), ammonical-nitrogen removal (50-80%), phosphorous removal (15-20%) and suspended solids removal (30-40%).
Event details
- Event
- XVII IMEKO World Congress
- Place
- Dubrovnik, CROATIA
- Time
- 22 June 2003 - 28 June 2003
- Website
- http://www.hmd.hr/imeko/