Brine treatment scaling control system and method
First Claim
1. A method for treating a brine stream comprising:
- treating a brine stream influent in an electrodialysis-reversal process to produce a concentrated brine stream effluent and a lower salinity diluent stream effluent;
processing said concentrated brine stream effluent in a brine treatment scaling control system that has a mixing vessel and a membrane filter with said mixing vessel seeded with calcium sulfate, wherein said processing produces a lowered salinity brine stream effluent and an elevated concentrated brine stream effluent; and
returning said lowered salinity brine stream effluent to a brine loop of said electrodialysis-reversal process wherein said electrodialysis-reversal process has two process flow inputs with a first input of said two process flow inputs connected to a demineralization portion of a membrane stack and a second input of said two process flow inputs connected to a concentrating portion of the membrane stack, wherein said brine loop is connected to said second input.
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Accused Products
Abstract
The present invention may be used in systems and methods for brine treatment scaling control in a water treatment system. A concentrated brine stream influent may be treated in an electrodialysis-reversal process to produce a concentrated brine stream effluent and a lower salinity diluent water, which may be potable water effluent. The concentrated brine stream effluent may be processed in a brine treatment scaling control system that may have a mixing vessel and a membrane filter with the mixing vessel seeded with calcium sulfate. A lowered salinity brine stream effluent may be produced for return to the electrodialysis-reversal process to allow operation at greater overall recovery and an elevated concentrated brine stream may be produced.
16 Citations
9 Claims
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1. A method for treating a brine stream comprising:
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treating a brine stream influent in an electrodialysis-reversal process to produce a concentrated brine stream effluent and a lower salinity diluent stream effluent; processing said concentrated brine stream effluent in a brine treatment scaling control system that has a mixing vessel and a membrane filter with said mixing vessel seeded with calcium sulfate, wherein said processing produces a lowered salinity brine stream effluent and an elevated concentrated brine stream effluent; and returning said lowered salinity brine stream effluent to a brine loop of said electrodialysis-reversal process wherein said electrodialysis-reversal process has two process flow inputs with a first input of said two process flow inputs connected to a demineralization portion of a membrane stack and a second input of said two process flow inputs connected to a concentrating portion of the membrane stack, wherein said brine loop is connected to said second input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification