Spectra LB 1800 and 2800


The LB-1800 and LB-2800 are extremely energy efficient reverse osmosis desalination plants designed for stationary or industrial applications. They are supplied as modular kits to be installed in an existing building. There are three main components, the Pearson Pump module, the Gauge- flowmeter panel and an electrical control box. Also included are pre-filters and a basic installation kit. These systems can treat high salinity brackish water or seawater using just a fraction of the energy of conventional small plants. In fact, the Spec-tra LB machines are so effi-cient they are often powered from renewable energy. Using simple analog monitoring and controls, these economical units are perfectly suited to remote applications that require the ultimate in reliability. These units are built using Spectra's revolutionary and proprietary new

Pearson High Pressure pump

The Pearson Pump is a breakthrough reciprocating pump design. This unique high pressure pump com-bines feed stream pumping and energy recovery into a single unit. The "Energy Re-covery" feature of the Pear-son Pump takes the energy entrained in the brine reject stream from the RO mem-branes and recaptures it, dramatically increasing the overall efficiency. This results in bringing energy requirements down to an impressive 8-11 Watt Hours per Gallon (2.6 KWH per Cubic Meter) on seawater, a major improve-ment for small scale water desalination. The system does not require continu-ous monitoring and pressure adjustment as it stays inherently in balance at all times, providing a constant product flow and recovery ratio. The product flow can be controlled via the variable speed drive to the motor.

The Pearson Pump is manufactured from engineered composites and super duplex stainless steel for extreme corrosion resistance. Spectra's innovative oil filtration system allows for long maintenance intervals.

System Features

  • Pearson Pump-the most energy efficient desalination pump on the planet!
  • Pearson Pump integrated with Spectra's exclusive oil filtration system for extended service periods.
  • Motor speed control with external heat sink for total command over motor speed and product flow.
  • Three way valves for service and basic install kit included.
  • Hand held salinity meter to check product water included.
  • 20 and 5 micron Spinring™Industrial prefilter set protects the membranes. Water delivery and pretreatment is site specific and will be engineered for your particular application. Multimedia filters and Ultra filtration options are available from Spectra.
  • Spectra engineered pressure vessels with proprietary Spectraflux ™ membranes.
  • Totally enclosed fan-cooled motors for long service life.

System Specifications

Spectrawatermakers engineers and builds a full line of marine, mobile and land based desalination sys-tems for sea and brackish water. Many of our systems are custom built to meet our customer's needs and application. Please contact the factory with your requirements.

Specifications LB-1800 LB-2800
Produce Fresh Water
75 GPH (285 LPH)
116 GPH (444 LPH)
Treat Water
Seawater or Brackish
Power Consumption
Approx. 800 W
Approx. 1200 W
Feed water recovery
Salt rejection
99.4% minimum
99.4% minimum
Feed flow
6 GPM (23 LPM)
Required inlet pressure
20 PSI (1.4 bar)
Membranes Spectraflux TFC 4"x40" Seawater RO
2 ea.
Pearson pump
constructed of glass epoxy composites and super duplex SS
1ea. 20" 20 micron, 1ea. 20" 5 micron
System Operation Voltage
24V DC
48VDC, 120VAC, 240AC

System Dimensions

Download PDF Brochure


| Products
| Supports
| Technology
| Contact
© 2011 EcoHydro Solutions Co., Ltd. Phone: (66)-81-318-9798, Fax (66)-77-285-080