ASSESSMENT EFFICIENCY OF SHURAW WASTEWATER TREATMENT PLANT NORTH IRAQ

This study provides an assessment the efficiency of Shuraw Sewage treatment plant (STP) in the city of Kirkuk, one of the northern Iraq cities. It designed to treat (1000) m 3 /day. The biochemical, chemical and physical properties of raw and treated sewage water estimated in this study. The results reveal that the efficiency of BOD and COD removal were 81.19% and 80.64%, respectively. High value of (TSS, PO4, NO2, Oil& Grease and H2S) were (98.2, 7.74, 0.794, 38.5 and 85.76) mg/l respectively.SO4, NO3 and CL are within the standard limits. A high positive correlation of raw wastewater characteristics between PO4 & NO2 (r = 0.898) whereas high reverse correlation between COD & PH (r = -0.727). A high positive correlation for treated wastewater, between BOD & COD (r = 0.727) whereas high inverse correlation between PO4 & H2S (r = -0.683).