Membrane bioreactor (MBR) and moving bed bioreactor (MBBR) configurations for wastewater treatment
The water treatment system and method incorporating the use of a hydrodynamic separator to remove most of the total suspended solids (TSS) in source water being treated to thereby lighten the load on membrane filtration in the water treatment system and lower energy costs.
1. A membrane based bio-reactor water treatment system comprising:
a water in-take for receiving source water into the system;
a solids removal module configured to receive the source water from the water in-take;
a pretreatment module configured to receive the source water from the solids removal module;
an aeration zone configured to receive the source water from the pretreatment module;
a membrane module configured to receive the source water from the aeration zone; and
a hydrodynamic separator configured within the system to receive the source water prior to the source water being received by the membrane module, the hydrodynamic separator configured to remove total suspended solids (TSS) from the source water prior to the source water being received by the membrane module.
2. The system according to claim 1 wherein the hydrodynamic separator is positioned between the pretreatment module and the aeration zone.
3. The system according to claim 1 wherein the hydrodynamic separator is positioned between the solids removal module and the pretreatment module.
4. The system according to claim 1 wherein the hydrodynamic separator is positioned between the aeration zone and the membrane zone.
5. The system according to claim 1 wherein the membrane module is configured with at least a membrane having a filtering capacity to filter water with less than 100 mg/l of total suspended solids.
6. The system according to claim 1 wherein the membrane module is configured with at least a membrane having a filtering capacity to filter water with more than 100 mg/l of total suspended solids, up to 12,000 mg/l total suspended solids.
7. The system according to claim 1 wherein the system removes >90% of total suspended solids (TSS) continuously without a filtration barrier.
8. The system according to claim 1 wherein the hydrodynamic separator provides a variable flow split between a clean water stream and a waste water stream.
9. The system according to claim 8 wherein the flow splitting ranges from a 50:50 split to a 90:10 split between cleaned water and waste water.
10. The system according to claim 1 wherein the hydrodynamic separator has a footprint of approximately 5 ft by 5 ft.
11. The system according to claim 1 , wherein the membrane module is a membrane bioreactor (MBR) module, wherein energy savings to operate the MBR module of the system incorporating the hydrodynamic separator provides an energy savings of approximately 62% to 92% over the energy needed to operate the MBR module in a MBR based water treatment system without a hydrodynamic separator.
12. The system according to claim 1 wherein the slope of floc decline curve from TSS foulants is decreased compared to existing MBR based water treatment systems.
13. A moving bed bio-reactor based water treatment system comprising:
a water in-take for receiving source water into the system;
a solids removal module configured to receive the source water from the water in-take;
a pretreatment module configured to receive the source water from the solids removal module;
a moving bed bioreactor module configured to receive the source water from the aeration zone; and
a hydrodynamic separator configured within the system to receive the source water prior to the source water being received by the moving bed bioreactor module, the hydrodynamic separator is configured to remove total suspended solids (TSS) from the source water prior to the source water being received by the moving bed bioreactor module.
14. The system according to claim 13 wherein the hydrodynamic separator is located within the moving bed bioreactor module.
15. The system according to claim 13 wherein the hydrodynamic separator is located between the pretreatment module and the moving bed bioreactor module.
16. The system according to claim 13 wherein the membrane module is configured with at least a membrane having a filtering capacity to filter water with less than 100 mg/l of total suspended solids.
17. The system according to claim 13 wherein the membrane module is configured with at least a membrane having a filtering capacity to filter water with more than 100 mg/l of total suspended solids, up to 12,000 mg/l total suspended solids.
18. The system according to claim 13 wherein the system removes >90% of total suspended solids (TSS) continuously without a filtration barrier.
19. The system according to claim 13 wherein the hydrodynamic separator provides a variable flow splitting of a clean water stream and a waste water stream.
20. The system according to claim 13 wherein energy savings to operate the MBR module of the system incorporating the hydrodynamic separator provides an energy savings of approximately 62% to 92% over the energy needed to operate the MBR module in a MBR based water treatment system without a hydrodynamic separator.