نشریه علمی
نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناسی ارشد آلودگی محیط زیست، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان
2 دانشگاه صنعتی اصفهان
3 گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران
4 پژوهشکده نانوفناوری، دانشگاه صنعتی اصفهان، ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
To monitor the existing status of wastewater treatment systems of the stone quarrying industry, samples were taken from 29 quarrying units, according to the type of stone produced and the type of treatment system. Variables including suspended solid particles, dissolved solid particles, electrical conductivity, pH, and turbidity were measured in raw water, raw wastewater, and treated wastewater. The results showed that sedimentation treatment in these industries is not able to remove dissolved solid particles and reduce the electrical conductivity of wastewater. But filter press systems using polyacrylamide have a purification efficiency of 78% to 98% in removing turbidity. Statistical comparison of the effect of stone type, the effect of treatment type, and the simultaneous effect of these two on the turbidity variables and suspended solid particles of the treated wastewater of stone cutting factories, the only significant difference between the average suspended solid particles of the treated wastewater of stone cutting factories with filter press systems using polyacrylamide (52.5 ± 85.7 mg/liter) with other two groups. The results showed the superiority of the new filter press system with the use of polyacrylamide in increasing the efficiency of wastewater treatment. But it seems that the continuous and correct management of the purification system in stone cutting factories is a more important factor in the efficiency of removing turbidity and suspended solid waste particles, regardless of the type of stone produced or the wastewater treatment system.
کلیدواژهها English
