Pilot-plant Testing of a CEPT System Application for the Largest Industrial Complex in Iran

Abstract

2 Abstract: In this study, the technological strategies for discharging the industrial complex waste into the MWTP have been reviewed. There are more than 200 industrial complexes in Iran and among these, Toos Industrial Complex of Mashhad City at the north part of the Country is one of the largest and is also considered to be the most active one. Nearly all types of industries have been gathered and put into operation at thi s Complex (totally 488 industrial plants, 154 of which are now under operation). According to the results, the mean volume of the industrial wastewater produced and the overall conversion factor were determined to be 2691.8 m d and 73%, respectively. The study has continued after organizing a pilot plant in the 3 l vicinity of the complex for accomplishing the centralized pretreatment of the wastes with the aid of various chemicals (lime and FeO ). Inspecting the work of the pilot plant has revealed that the removal rates of 3 pollutants were 27 to 53% for BODS' 25 to 59% for COD and 46 to 94% for TSS. These removal levels were enough to make the remained load of industrial wastes qualified for discharge into MWTP. The final conclusion was that all the problems could be solved by taking advantage of CEPT for Toos industrial wastewaters.