EVALUATION OF THE QUALITY OF WATER TREATMENT PLANT SEWAGE FOR REUSE IN AGRICULTURE IN ILAM

Due to the water shortage problem in Iran, water supply is currently of great importance. In such a circumstance, according to the gradual and strict evolution of environmental standards and the need for re-use of wastewater, especially for agriculture and irrigation, improvement of the quality of the wastewater treatment plant swage is necessary. The presence of this wastewater next to the urban centers may increase agricultural products, around these regions. According to this study, the performance of the wastewater treatment plant in Ilam was examined and evaluated for 4 consecutive months (from April 2014 to July 2014) by analyzing the quality indices, TSS, COD, BOD5, heavy metals (cadmium, copper, lead) and the total and fecal coliforms. The average parameters are 49, 95.15, 50, 0.022, 0.015, 0.50 mg/l, 5 and 5, respectively that in the event of reuse for agricultural purposes, the drop in the quality of parameters mentioned above should be considered at environmental standards level. The results indicated that the above swage has no restrictions for use in agriculture, except for total and fecal coliforms.