top of page

SDI REDUCTION (O&G)

SDI reduction:

from 10 to 2

The SDI (Silt Density Index) is used to determine the fouling and clogging potential of particulate and fine colloidal materials that may be present in the feed-water.

The Oil & Gas industry typically uses feed-water with SDI<3.

SDI reduction in sea water vs “conventional” technologies

Data: IFREMER – TOTAL 2014

De-Oiling

Initial discharge water

99% water reclamation

95% of oil extracted into 1% of volume 

Results

Parameters
Upstream concentration (mg/L)
Downstream concentration (mg/L)
Removal (%)
PT
31,6
2,72
91
NTK
270
108
60
NGL
270
108
60
BOD5
5291
851
84
COD
9980
1626
84
TSS
4400
370
92

Operation

  • 2 VAL 900

  • Wastewater treatment: 50 to 100m3/day

  • 1,000 kg fat per day

  • TSS inlet: 4 to 6 g/l

  • Collected sludge: 1 to 2% of volume

  • Sludge concentration: 140g/L = 14%

bottom of page