Document Type : Research Paper
Authors
Member of the scientific faculty of Mineral Processing Research Institute
Abstract
In this research, the possibility of reusing industrial water from wastewater using the Anaerobic Reactor Method and Integrated Fixed-Film Activated Sludge (IFAS) is investigated on a pilot scale. The parameters examined are the efficiency of the system in removing COD, BOD, TSS and pH and retention times.
Adaptation of microorganisms in biofilm formation to reach a stable state occurred in maximum 35 days, after this time no noticeable change in COD removal efficiency was observed. The optimal hydraulic residence time of one anaerobic day is 4 aerobic hours. The highest removal efficiency of COD, BOD and TSS in the wastewater treatment of Urmia Industrial estates 2, respectively, with the hydraulic residence time of 2 days anaerobic 8 hours aerobic (88.71%)3 days anaerobic 8 hours aerobic (92.11%), and 2 days anaerobic, respectively 8 hours of aerobic activity (97.90%) were observed.
According to the WILCOX method, the effluents are medium waters and are suitable for irrigation. The pH (8-6-5) showed that the treated wastewater is used in agriculture. Also this wastewater is placed in group B of the standard presented in publication No. 462 (with medium quality for industrial use) and group C (with poor quality and suitable for cooling).
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