نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران، ایران
2 گروه مهندسی محیط زیست، دانشکده منابع طبیعی و محیط زیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران.
3 دانشکده منابع طبیعی و محیط زیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران.
4 دانشکده مهندسی شیمی و نفت، دانشگاه صنعتی شریف، تهران، ایران
5 گروه مهندسی بهداشت محیط، دانشکده بهداشت محیط، دانشگاه علوم پزشکی تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Electroplating industrial waste is one of the most critical industrial waste problems. There is a growing interest in developing methods for recovering metals and water from plating waste stream using membrane technology. In this project, reverse osmosis (RO) technology has been studied for electroplating industries wastewater treatment. in this study, nickel sulfate (20 percent) and nickel chloride (20 percent) were used with urban water. Pilot tests on nickel plating wastewater with 50,100,150 and 200 ppm Ni (II) concentration were delivered using polyamide thin film composite RO membrane. The results showed the average removal of nickel increase to 90.5 and 96.5 percent and the average removal of Total Dissolved Solids reached high to 97.4 and 98.4 percent when the working pressure increase from 3 to 4 and 5 bar, respectively. Based on the results, the reverse osmosis process with a yield of 60 percent at a pressure of 4 bar with a effluent at a concentration of 200 ppm gave a good result in the recovery of nickel and there-circulation and reuse of water.
Therefore this method of nickel removal, when compared to other methods, is more suitable and effective.
کلیدواژهها [English]