Develop Treatment Process For Reuse Of Effluent Water From Waste Water Treatment Plant As Cooling Water Make Up

Abstract

Cooling water happens to be an important commodity when considering the operation of any manufacturing plant, be it an oil refinery or a fertilizer production plant. The project that was assigned to us by Pakistan Refinery Limited (henceforth referred to as „PRL‟) was related to their cooling water setup, which currently is supplied by an unreliable source of water from the Karachi Development Authority (KDA). It costs the company 4-5 million PKR per annum, and the supply tends to fluctuate, Furthermore, they are wasting a potential source in the form of effluent water which is dumped into the ocean after treatment till it is up to par with NEQ limits. So we devised a process which would make it feasible for PRL to use its effluent water as cooling tower makeup.