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Mega Products – SSD and HPB or HP-HEMI

  • RO High Pressure Pumps (HPP) with Energy Recovery
  • Feed flows from 400 to 4000 m3/h
  • Pressures to 83 bar
  1. Low pressure feed from pretreatment
  2. HPP raises feed to an intermediate pressure
  3. HPB raises feed to membrane requirements
  4. High pressure brine
  5. Low pressure to brine drain
  6. Permeate

Feed Boosting Configuration

The HPB may be located anywhere in the system to minimize piping costs.

HPP is sized to handle feed flow at reduced pressure differential.

  1. 1st stage brine
  2. Boosted pressure to 2nd stage
  3. 2nd stage brine to HPB
  4. Low pressure to brine drain
  5. Permeate

Interstage Boosting Configuration

Interstage boosting balances flux rates, improves permeate quality and overall production. With optimized array design, interstage boosting can provide energy efficiency as good as any other type of ERD – often at a lower capital cost.

Hydraulic Coverage for Large Systems

Mega Systems Design Options

FEDCO research into the basic hydraulic response of RO systems operating with variable membrane conditions has lead to two plant designs that maximize energy efficiency, simplifies control, and minimizes capital costs.

Hybrid Centralization


Hybrid centralization combine the benefits of centralized feed pumping and discrete RO train control. This design permits dynamic addition and removal of trains without interruptions of production. The control scheme is simple and permits optimization of membrane conditions on a train-by-train basis.

The HPB is ideal for three-center design by providing a large capital cost savings, simple control schemes and low specific energy consumption.

Typical Mega or Large System Installations Photos

HPB-700 (retrofit of competitors unit)

SWRO train with HPB at lower left

SSD-500 with HPB-500 SWRO Facility

HPB-1000 in Jeddah, Saudi Arabia

HPB-1400 units waiting for crating