Notional Field Development Final Report - EBN

EBN Notional Field Development Plan
Legislation in the Netherlands concerning the quality of discharge water is strict with the levels of
chemicals, biocides, metals and salt being the primary areas of concern.
Actual cubic meter prices depend on:
· Capacity,
· Quality,
· Distance,
· And the period of water discharge.
4.3.14.1 WWTP
All production and waste water must be pre-treated to remove biocides and metals and reduce salt
levels prior to entering the WWTP system to ensure these waters do not impact the treatment
processes which are primarily biological. Produced and flowback water must be carried via a dedicated
pipeline.
Figure 4-30. WWTPs are limited in their ability to process frac waters
While the WWTP process does not remove the salt, if the treated water still has a high salt
concentration, additional treatment will be necessary. The maximum allowable concentration of salt is
within a 150 to 500 mg/l range, and is dependent upon where the water will be discharged.
4.3.14.2 Surface water
Discharge to surface water is only possible if the effluent meets the very tight maximum allowable
concentrations for metals, P, N, COD, BOD etc. The same maximum allowable concentrations are
© 2011 Halliburton All Rights Reserved
171