Energy recovery

One of the most, but yet fully untapped potential areas of disposal from a technical and environmental angle is brine reject. Most of the RO plants can make best use of either 1st stage or 2nd stage brine depending on its end-use and the inter-stage salinity thereof. While dealing with disposal scen

Taking three examples of plants with brine concentrators, we analyse energy consumption of existing and projected systems. This includes plants using Turbocharger boosting system, Turbocharger boosting with additional Impulse turbine and Impulse turbine acting as boosting and recovery system. Energy

This paper traces the history of large-scale work-exchanger energy recovery systems from early concepts; the first seawater reverse osmosis application in 1975; through the present state of the art. Work-exchanger technology, while fairly simple in concept, has undergone a tremendous amount of evolu

This paper describes the upgrade of a seawater reverse osmosis (SWRO) unit by replacing the hydraulic turbocharger energy-recovery system with a Dual Work-Exchanger Energy-Recovery (DWEER) system. Before the upgrade, the unit operated at a capacity of 1,071 m³/d, and a specific electricity of 3.00 k

The subject of energy recovery for seawater membrane desalination has been in a constant state of flux for all of the years since the inception of the concept of using reverse osmosis for desalination. Due to the high costs associated with the operation of these facilities, a way to recoup some of t

Energy recovery systems based on turbines activated by concentrate leaving the plant have been in operation in many reverse osmosis (RO) plants for many years. Other design approaches for RO plants save energy by reducing the energy demand for the desalination process itself. One of them is the pres