IN THIS STUDY, WAKEST WATER WAS PREPARED FROM WATER RESERVOIR STORAGE OF OIL TANKS OF SHAHID HASHEMINEZHAD GAS REFINERY OF SARAKHS. ITS PRIMARY FEATURES WAS MEASURED WE RECEIVED TO THE NUMBER OF 1060 G/M3 FOR TSS, 555NTU FOR TURBIDITY AND 8.34 FOR PH. THE AIM OF THIS STUDY: IT WAS DONE TO DECREASE OF TURBIDITY AND WASTE WATER TSS OF SHAHID HASHEMINEZHAD GAS REFINERY OF SARAKHS. IN EACH TEST WAS PUT 0.005 M3 OF WASTE WATER IN A GLASS BOWL AND WE PUT 6 ELECTRODE ALTERNATIVELY, INCLUDE OF 3 ELECTRODES CALLED ANODE AND 3 ELECTRODES CALLED CATHODE AND THEIR DISTANCE FROM EACH ARE WAS 1.5CM. THEN THEY WERE CONNECTED SINGLY POLAR PARALLEL O THE DC SOURCE ENERGY. SS ELECTRODE USED AS A CATHODE AND FE, AL ELECTRODE AS AN ANODE. TREATMENT WAS DONE IN (15, 20, 30V) VOLTAGES AND REMAINING TIME WAS (20, 40, 60 MIN) BY THE USE OF FE, AL ELECTRODES AS ANODE AND SS ELECTRODE AS A CATHODE IN PH (9.03, 8.34 AND 7.56) IN 54 TESTS. THE RESULTS STATE THE MOST ELIMINATION PERCENT OF TESTS IN VOLTAGES: 30 V AND REMAINING TIME: 60MINS. AND THE USE OF AL ELECTRODE AS ANODE AND IN PH= 7.56, THAT TURBIDITY DECREASED %99.7 AND TSS %98.2. IT SHOWS HIGH EFFICIENCY OF ELECTROCOAGULATION PROCESS IN DECREASE OF TURBIDITY AND TSS.