Esfahan Steel Co. Wastewater Treatment Plant is regarded as one of the most complex projects in Iran. The main reasons include the wide variation in the quality and quantity of incoming -sanitary and industrial- effluent, the high efficiency and availability factor, as well as the diversity of equipment used. This project has a total capacity of 850 cubic meters per hour and aims to reuse municipal and industrial wastewater.
In the sanitary treatment section, the preliminary effluent treatment is carried out with the incoming wastewater from the cities of Zarrinshahr, Fuladshahr, and also the sewage from the facilities of the Esfahan Steel complex. The influent capacity is 550 cubic meters per hour. The process is done using the advanced Membrane Bioreactor (MBR) technology, along with other stages including the grit removal unit, equalization tanks, drum screens, aeration tanks, activated carbon filtration, and ozonation unit.
Then the output of the sanitary pretreatment section is transferred to the Reverse Osmosis (
RO) advanced treatment stage. After passing through relevant units, the produced water is delivered to Esfahan Steel Co in two quality grades: soft water and industrial water.
This project is implemented under a 15-year BOT (Build, Operate, Transfer) contract with MAPNA Group as the investor and Esfahan Steel Co. as the investee. MAPNA Novin Water Development Company serves as the investor and employer while Nasr Niroo Company is the EPC contractor. Quds Niroo Company is the project consultant and MAPNA services division is responsible for the operation of the plant.
The commissioning of this wastewater treatment plant plays an effective role on ensuring sustainable supply of water resources required by the country’s steel industry in addition to improving environmental indicators.
