Publisher's Note : MDPI Stays neutral with regard to jurisdictional claims in published maps and institutional affiliationsNowadays, water savings on industrial plants have become a significant concern for various plants and sections. It is vitally essential to propose applicable and efficient techniques to retreat produced water from onshore and offshore production units. This paper aimed to implement
the PFF (Photo Fenton Flotation) method to optimize the water treatment procedure, as it is a twostage separation technique. The measurements were recorded for the HF (hydraulic fracturing) and
CEOR (chemically enhanced oil recovery) methods separately to compare the results appropriately.
To assure the efficiency of this method, we first recorded the measurements for five sequential days.
As a result, the total volume of 2372.5 MM m3/year of water can be saved in the HF process during
the PFF treatment procedure, and only 20% of this required fresh water should be provided from
other resources. On the other hand, the total volume of 7482.5 MM m3/year of water can be saved
in CEOR processes during the PFF treatment procedure, and only 38% of this required fresh water
should be provided from other resources. Therefore, the total water volume of 9855 MM m3 can be
saved each year, indicating the efficiency of this method in supplying and saving the water volume
during the production operations from oilfield unit