Brine treatment scaling control system and method
A System for brine treatment scaling control in a water treatment system is described. In the 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.
1. A system for treating a brine stream, comprising:
an electrodialysis-reversal system in communication with a concentrated brine stream source for receipt of a brine stream influent and production of a concentrated brine stream effluent and a lower salinity diluent stream effluent, wherein said electrodialysis-reversal system has a first process input connected to a demineralization portion of a membrane stack and a second process input connected to a concentrating portion of the membrane stack;
a brine treatment scaling control system in communication with said electrodialysis-reversal system for receipt of said concentrated brine stream effluent and production of a lowered salinity brine stream effluent, wherein said brine treatment scaling control system has a mixing vessel and a filter; and
a brine loop connected to said second process input of said electrodialysis-reversal system to return said lowered salinity brine stream effluent to said electrodialysis-reversal system.
2. The system as in claim 1 , wherein said filter is adapted to output said lowered salinity brine stream effluent and an elevated concentrated brine stream effluent; and
said mixing vessel is in communication with said filter to receive said elevated concentrated brine stream effluent.
3. The system as in claim 2 , wherein said mixing vessel is adapted to return a portion of a mixture to said filter and output a portion of said mixture to the environment.
4. The system as in claim 1 , wherein said concentrated brine stream effluent is received in said mixing vessel.
5. The system of claim 1 , wherein said mixing vessel is in communication with said filter to route a mixture to said filter to produce said lowered salinity brine stream effluent and an elevated concentrated brine stream effluent.
6. The system as in claim 4 , wherein said filter is adapted to output a portion of said elevated concentrated brine stream effluent to the environment.
7. The system as in claim 1 , wherein said mixing vessel is seeded with one or both of calcium sulfate and gypsum crystals.
8. The system as in claim 1 , wherein said mixing vessel is seeded with calcium sulfate.
9. The system as in claim 1 , wherein said filter is a membrane filter.
10. The system as in claim 2 , wherein said filter is a membrane filter.
11. The system as in claim 4 , wherein said filter is a membrane filter.
12. The system as in claim 9 , wherein said membrane filter is selected from the group consisting of a nanofiltration filter, a reverse osmosis filter, a tubular filter, a flat sheet filter, and a spiral configuration filter.
13. The system as in claim 10 , wherein said membrane filter is selected from the group consisting of a nanofiltration filter, a reverse osmosis filter, a tubular filter, a flat sheet filter, and a spiral configuration filter.
14. The system as in claim 11 , wherein said membrane filter is selected from the group consisting of a nanofiltration filter, a reverse osmosis filter, a tubular filter, a flat sheet filter, and a spiral configuration filter.
15. A system for treating a brine stream, comprising:
an electrodialysis-reversal system in communication with a concentrated brine stream source for receipt of a brine stream influent and production of a concentrated brine stream effluent and a lower salinity diluent stream effluent, wherein said electrodialysis-reversal system has a first process input connected to a demineralization portion of a membrane stack and a second process input connected to a concentrating portion of the membrane stack;
a brine treatment scaling control system in communication with said electrodialysis-reversal system for receipt of said concentrated brine stream effluent and production of a lowered salinity brine stream effluent, wherein said brine treatment scaling control system has a mixing vessel seeded with calcium sulfate and a membrane filter; and
a brine loop connected to said second process input of said electrodialysis-reversal system to return said lowered salinity brine stream effluent to said electrodialysis-reversal system.
16. The system as in claim 15 , wherein said membrane filter is adapted to output said lowered salinity brine stream effluent and an elevated concentrated brine stream effluent; and
said mixing vessel is in communication with said membrane filter to receive said elevated concentrated brine stream effluent.
17. The system as in claim 15 , wherein said concentrated brine stream effluent is received in said mixing vessel.
18. The system as in claim 15 , wherein said mixing vessel is in communication with said membrane filter to route a mixture to said membrane filter to produce said lowered salinity brine stream effluent and an elevated concentrated brine stream effluent.