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6 Industrial Reverse Osmosis Equipment Design Considerations

In a power plant or any other industrial facility that uses a lot of steam, the uninterrupted steam output is crucial. As a result, ultrapure boiler feedwater must be available at all times. The development, installation, and operation of an Industrial RO Plant Price in Pakistan are increasingly being referred to as this.

The use of RO in industrial and power generation facilities has expanded in popularity during the last 15 to 20 years, especially in newly developed cogeneration and independent power generation facilities. Reverse osmosis is frequently used to retrofit boiler water pre-treatment systems in older industrial buildings. This is especially true for base-loaded typical utility power generation plants, regardless of fuel source.

Examine the following 6 RO equipment and operating criteria before choosing a Reverse Osmosis system for your Power Generation or Industrial site.

2 Parameters to Consider in the Final Use of RO Treated Water

Reverse Osmosis Equipment Parameter #1:

The permeate is the desirable water stream in most Power Generation installations. System designs with more than one pass may be required to ensure that the finished product is of the desired purity. Other considerations include RO redundancy, which allows for the removal of specific trains for cleaning or membrane replacement, boiler makeup demand vs. RO flow rate, and the need for a RO water storage tank, both upstream and downstream for the RO input and permeates.

Reverse Osmosis Equipment Parameter#2:

If they reject is the intended product, multi-staging may be required. To reduce the total amount of water that must be treated to final effluent requirements, wastewater and, in certain circumstances, cooling tower blowdown will be concentrated at a power plant using multi-staging RO. This is a diagram of a two-stage reverse osmosis system.

4 RO Feedwater Characteristics and Variability Consider the following parameters:

The RO feedwater must meet certain standards. Otherwise, RO membranes will perform poorly; they will foul quickly, necessitating significant and costly cleaning, and possibly requiring premature replacement. The quality and output of permeate water will decline as a result.

In addition, the variation of the RO system’s plant service water must be taken into account. Surface water turbidity varies by season, but during spring run-off, it can exceed 500 Nephelometric Turbidity Units (NTU). There is a large range of dissolved solids in even well water.

Parameter #3 for Reverse Osmosis Equipment:

How seasonal is the plant service water in terms of dissolved solids, COD (Chemical Oxygen Demand), color, turbidity, temperature, and suspended particles? Is there any treatment equipment that can manage any deviations upstream of the RO system?

Parameter #4 for reverse osmosis equipment:

How variable is the plant service water during spring run-off and lake turn-over for surface water sources? The turn-over occurs twice a year when the lake temperature hits 40 degrees F [4.4 degrees C], the point of maximum water density. During this turbulent time, there is a significant increase in suspended particles and turbidity as debris and silt are forced up from the bottom.

Parameter #5 of reverse osmosis equipment:

How stable is the water chemistry in a freshly drilled well? Total Suspended Solids (TSS) may remain consistent over time, whereas Total Dissolved Solids (TDS) can vary seasonally and over the well’s lifetime.

The Silt Density Index (SDI) should be tested on a regular basis by reverse osmosis equipment. In a RO system, the Silt Density Index is an assessment of the feedwater’s fouling potential. An SDI of fewer than 5 is required for spiral-wrapped reverse osmosis systems, while an SDI of less than 3 is required for hollow fiber RO systems. If necessary, conduct a particle size distribution analysis of the suspended/colloidal solids in the plant service water and RO feedwater.

The 11-page report is available for free. The white paper “Eleven Things to Consider When Purchasing a Reverse Osmosis System for Your Power Generation Facility” (a $97 value) by Layne Christensen includes an in-depth discussion of Reverse Osmosis design considerations for the Power Industry and other Industrial applications, as well as tables and drawings.

Click here to watch a slideshow about Industrial Reverse Osmosis Design with narration.

Water Logic, a pioneer in reverse osmosis (RO) system development, has the technical expertise to design and install reverse osmosis systems for all of your plant water needs. Beyond RO, the Water Treatment Division Research & Development team at Layne Christensen is focused on enhancing and expanding the water treatment techniques we now utilize so that we may tackle the most difficult challenges head-on with innovation.

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