Refinery Process Water Treatment

Costumer

Partners

Location

Lower Saxony (Germany)

Conditions

Desalter Effluent Sample
Temperature 20-40ºC
pH 7-7,5
TDS (mg/l) 43.551
Oil (mg/l) 800
TSS (mg/l) 500

Refinery Process Water Treatment

Challenge

Managing the increasing oil content of wash water associated with the desalter unit as well as tank bottom draws from crude oil reception operations is becoming more challenging for refining companies. BP Lingen refinery has to manage oily hard-to-treat desalter brine that can disrupt the operation of their wastewater treatment plant and negatively impact the bottom line. Handling oily wastewaters with high and variable contents of O&G and TSS requires complex and costly treatment trains.
BP Lingen wanted to reach minimum oil-in-water quality with water desalter effluent before sending it to biological treatment with minimal operating costs

 

Solution

Pilot tests were done with flowrates of 100-200 l/h. Different membrane materials and geometries were tested, i.e. Al2O3 and SiC, hollow fiber and flat sheet.

All membranes removed the oil concentration to less than 10 ppm, in most cases less than 5 ppm.

 

Results

  • High removal efficiency:
    • Oil: from 800 ppm to 2 ppm (> 99,75 %)
    • TSS: from 500 ppm to 2 ppm (> 99,6 %)
  • High recovery (> 95%)
  • 8 hours of stable operation (TMP < 30mbar/h)
  • High flux (120 lmh)
  • No coagulation/flocculation chemicals
Refinery Process Water Treatment
Refinery Process Water Treatment
Refinery Process Water Treatment
Refinery Process Water Treatment
Refinery Process Water Treatment