Find out more
- Product specifications: the HPB turbocharger and MSS high pressure pump are perfectly suited to low pressure RO applications.
- Case study: Addressing variable feed quality using interstage boosting.
- Technical paper: Collaboration with Biwater to deliver energy recovery designs for San Diego's Pure Water Project.
Brackish & Wastewater Reverse Osmosis
- Minimize downtime and operating costs
- Balance system flux
- Guarantee optimal system performance
Browse low-pressure RO equipment
Interstage turbochargers
Motorized turbochargers
Eliminate interstage pumps and balance system flux.
Fine-tuned boosting for large-scale brackish water RO.
We are constructing more desalination capacity than ever, but traditional single-stage membrane arrays dominate
Small increases to recovery come at the cost of higher biofouling, higher chemical consumption and shorter membrane life
Large arrays of isobaric ERDs also struggle to maintain consistent energy transfer, and introduce brine-feed mixing
IMPROVE MEMBRANE PERFORMANCE
- Increase permeate production
- Maintain optimal membrane conditions
- Ensure smooth operation with variable feed quality
REDUCE OPERATING COSTS
- Lower energy consumption
- Minimize plant footprint
-
Reduce brine discharge volume
FEDCO high pressure centrifugal pumps are used in thousands of installations, including some of the world's largest BWRO and wastewater reuse facilities, such as the Orange County's Groundwater Replenishment Scheme and Singapore's Changi NEWater Facility.
Our pumps are recognized for their high efficiency, efficient delivery and unparalleled reliability in the field. The table below summarizes the operating envelope for the MSS Series and MSD Series high pressure feed pumps. For lower pressure BWRO systems (up to 19 bar/270 psi) and for general service/pretreatment applications, we recommend using the SLP Series low pressure pump.
Pump Model |
MSS Series |
MSD Series |
Minimum flowrate |
7.5 m3/hr 33 gpm |
40 m3/hr 1,080 gpm |
Maximum flowrate |
250 m3/hr 1,100 gpm |
1,080 m3/hr 4,755 gpm |
Maximum efficiency |
80% |
87% |
Materials of Construction |
316 SS |
Super Duplex (Zeron-100) |
Product specifications |
Find out more:
- Performance curves: Download the comprehensive curve catalog for the MSD series high-pressure pump.
- General information: Find out more about FEDCO high and low-pressure pumps.
- Contact our sales team to find out more about our products and services.
Interstage boosting is commonly used in brackish water reverse osmosis (BWRO) to balance flux between multiple RO stages. This achieves more stable membrane performance and higher recovery rates.
Using a turbocharger for your system's interstage boosting needs avoids using additional energy, and saves CAPEX on a booster pump, motor and variable frequency drive. It is also highly compact and operates with close to zero noise and vibration.
Interstage boosting is an ideal solution to handling high recovery applications or variable feedwater quality. See the case study below to find out more.
Find out more:
- Product specifications: Learn more about the HPB turbocharger.
- Technical guide: In-depth study of centrifugal energy recovery devices.
- Equipment selection: Read more about how to put interstage boosting into practice.
Contact our sales team to find out more about our products and services.
The HP-HEMI is the latest generation of energy recovery device technology for large-scale reverse osmosis, consisting of a FEDCO HPB model turbocharger coupled to a motor. Unlike unlike a conventional turbocharger, the impeller driving the feed boost can be powered by a combination of hydraulic and electrical energy.
The HP-HEMI has three modes of operation:
- Passive: the motor is disengaged, and the feed boost powered entirely by brine energy.
- Motor-assisted: If brine energy is insufficient to power the required feed boost, the motor and VFD engage to provide additional boost pressure.
- Regenerative: If a regenerative variable frequency drive (rVFD) is used, this enables the generation of electricity when brine energy is more than required for the required feed boost.
Scale rendering of the largest HP-HEMI model, with a capacity of 2,800 m3/hr (12,000 gpm), consisting of a motor (left) coupled to a turbocharger ERD (right).
Find out more:
- Product specifications: Find out more about the HP-HEMI.
- Technical paper: Simultaneous interstage boosting and electricity generation for large-scale water recycling.
Contact our sales team to find out more about our products and services.
Optimizing RO performance: The Power of Interstage Boosting
This post is adapted from a technical paper presented by FEDCO and Biwater at the 2023 AMTA Membrane Technology Conference. Click here to read the...
FEDCO and Biwater deliver innovative energy recovery design
FEDCO is proud to be working with Biwater to deliver an innovative solutions for reverse osmosis energy recovery at the San Diego North City Pure...
FEDCO presents optimized RO approaches at IDA World Congress, Sydney
On October 8-11 the global desalination industry convened in Sydney for the International Desalination Association World Congress. Following delays...