This paper presents an analysis of single-stage, two-stage and one-and-one-half-stage designs conducted using a membrane projection program and PX device performance characteristics at different feed water salinities. The paper presents simplified operating guidelines and control philosophy for these designs. The author anticipates that multiple-st...

This presentation discusses available energy recovery devices for reverse osmosis and compares and contrasts different types of energy recovery devices including centrifugal and positive displacement energy recovery devices...

Energy recovery devices are employed in nearly all seawater reverse osmosis (SWRO) desalination plants to recover pressure from the membrane reject stream and return it to the process. Because of the high pressures and low membrane permeate recovery rates common in these systems, the membrane reject stream contains a considerable amount of energy ...

Energy recovery systems for brackish reverse osmosis (RO) plants. Advantages of energy recover in improving energy efficiency and balancing membrane flux between 1st and 2nd stages. Discussion of turbochargers and Isobaric energy recovery devises....

Brackish Water Reverse Osmosis using Energy Recovery...

This presentation discusses turbocharger energy recovery devices for reverse osmosis (RO) processes. Topics include general energy recovery theory, system control and optimization, operation, and equipment troubleshooting. The presentation concludes with a discussion on flux balancing and provides an energy cost evaluation that compares interstage ...

The authors of this paper will introduce a new design method which eliminates the need for replacing equipment and re-machining of the high cost components. This innovative design method allows for rapid customization of the fluid pathways so that equipment efficiency is restored with minimal downtime and cost to the operator, while maximizing effi...

This paper addresses the predicted performance of the PX-Q300 device and describes the life cycle costs that are critical for the long term investment, maintenance, and operation of a large California desalination plant, which will set the technology standard of future desalination plants in California and possibly throughout the US for decades to ...

Energy recovery is now common in all seawater membrane treatment processes and selecting the appropriate energy recovery technique and device must include and examination of the capital cost (CAPEX) as well operating cost (OPEX) to assure maximum return on investment....

This PowerPoint give a comparison of energy recovery options for the treatment of low tds water and presents a few case histories....

The Recovery Rate (Recovery) of a Reverse Osmosis (RO) system is defined as the ratio of permeate to total feed flow. The recovery is a key design parameter which, for a given plant production capacity, will help define both: the infrastructure and equipment sizing as well as expected energy and chemical consumption. These factors relate directly t...

The Recovery Rate (Recovery) of a Reverse Osmosis (RO) system is defined as the ratio of permeate to total feed flow. The recovery is a key design parameter which, for a given plant production capacity, will help define both: the infrastructure and equipment sizing as well as expected energy and chemical consumption. These factors relate directly t...