Circulating water quality parameters for petrochemical enterprises
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I need help understanding the actual water quality parameters in operation – what is the difference compared to the design standards?
This is too general; different regions, different water qualities used for replenishment, and different levels of concentration all result in varying water quality parameters. Therefore, your specific data is needed in order to make a judgment
I just want to see how much everyone usually controls.
The standards exist and are easy to find. I still want to see what metrics each party controls.
Test results from the testing unit: pH value – 9.12; Turbidity – 12.3 NTU; Total hardness – 748.49 mg/L; Conductivity – 930 us/cm; Ca2+ – 229.05 mg/L; Cl- – 115.02 mg/L; Alkalinity measured as CaCO3 – 83.72 mg/L; Iron ions – 0.08 ppm; Total alkalinity measured as CaCO3 – 439.55 mg/L; Total phosphorus – 6.63 mg/L; Concentration factor – 5.2. Test results from the testing unit: pH value – 8.87; Turbidity – 10.2 NTU; Total hardness – 652.25 mg/L; Conductivity – 802 us/cm; Ca2+ – 171.25 mg/L; Cl- – 89.46 mg/L; Alkalinity measured as CaCO3 – 63.00 mg/L; Iron ions – 0.00 ppm; Total alkalinity measured as CaCO3 – 451.52 mg/L; Total phosphorus – 3.32 mg/L; Concentration factor – 4.1. The data above correspond to two different circulating water systems.
All of this is in accordance with the national standards for circulating water; it’s just that different manufacturers have slightly varying control standards, but they are all within the scope of those national standards.
Refer to Sinopec’s “Technical Requirements for Water Management, Part 2: Recirculated Water”