THE INFLUENCE OF INDUSTRIAL SEWAGE WHICH PRODUCED FROM TANNERY FACTORIES ON THE CHARACTERISTICS OF TIGRIS RIVER

Abstract

In this study , an analytical study was done to indicate the characteristics ofindustrial sewage which produced from Tannery Factories , and their effects on TigrisRiver .This study was continuoued over a period of one year . Many tests were conductedsuch as (TDS , TSS , DO , PH , BOD , TH , CL , NO3 , PO4 , S ) by using chemicalmethods. Results showed that some of the pollution parameters such as TDS , BOD haveeffects on char of Tigris River with monthly increased about 69% , 80% respectively.These ratios had reached max. values at summer and autumn seasons .While otherparameters does not exceeds the max. permissible limits . Researchers suggested to controlthe quality of sewage produced from the Tannery Factories , must be arranged the using ofchemical compounds in processes of soaking and fleshing the hides also used an ionexchanging units to control the value of TDS .