How the design of industrial RO system is optimized for specific applications?

Currently, reverse osmosis (RO) is employed in a variety of applications, from local municipal drinking water applications to massive under-the-sink drinking water systems. Due to its ability to eliminate both dissolved ionic and organic contaminants, the method is widely recognized and employed.

This blog will majorlyfocus on the design of industrial RO system optimization for specificapplications. Let’s get going……

Many RO membranes are employed in big systems, and the cost of the membranes is high. Reverse osmosis systems that are more expensive and classified as "heavy industrial" or "municipal" have a different design philosophy than their smaller commercial equivalents.

Although the system's cost is crucial, optimal membrane performance and long-term operation are given more weight. There are very few membranes on the system, and the 2.5" and 4" membranes range in price from $100 to $350. Therefore, despite the fact that the performance may have been declining over time, the membranes are considered disposable and changed every year or two.

Feed water sources

The first consideration when building a reverse osmosis system is the feed water source. Although industrial or municipal wastewater is a possibility, surface or well water is often the water source for brackish water membranes (BWRO). It is crucial to look into where the municipality gets its water, even if the source is municipally treated water. As the features of the water supply will impact the RO membrane operation, this enables the best system design.

The water supply suggests that scaling and fouling are possible. The buildup of particles on the feed spacer or membrane surface is referred to as fouling. Dissolved solids from the feed water are precipitated out on the concentrate side of the membrane during scaling, a chemical process. Scaling is most frequently caused by calcium carbonate, barium sulphate, calcium sulphate, calcium fluoride, and strontium sulphate.

Surface water can come from reservoirs, lakes, rivers, etc. Due to seasonal variations in suspended particles, biological pollutants, and total organic carbon, it is vulnerable to fouling (TOC). Hardness, heavy metals, and total dissolved solids (TDS) levels in surface water are typically low. Surface water is often chlorinated to eliminate germs, which has a significant potential for organic fouling. The amount of suspended solids may rise during rain.

Turbidity and Silt Density Index are the two most accurate ways to measure suspended particles (SDI). Nephelometric Turbidity Units (NTUs) are the most widely used units for measuring turbidity, which rises as water's transparency (ability to scatter light) declines.

For best results, the turbidity should be less than 1.0 NTU. The RO inlet has acceptable SDI levels of less than 5.0 (15-minute test), however for best performance, SDI should be less than 3.0. Due to the earth's function as a natural filter as water sinks underground, well water typically contains relatively little suspended particles. Well water generally contains more dissolved particles, is frequently hard, has more heavy metals, and may also include silica.

Based on the qualities and source of the input water, RO pretreatment is optimised. By using filtering, suspended particles are eliminated. While membrane filtration, such as ultrafiltration, may filter down to 0.01 microns, media filtration is only capable of filtering between 10 and 20 microns.

Why choose Nestsol!

Our team of experts in water treatment system installation and maintenance is at your side at every stage. Whether you are the manager of a multimillion dollar industrial organisation or only need high-quality water treatment in a single building, we handle every job the same way and provide you with unrivalled service.

When you work with Netsol Water Solutions, you'll get the high-quality products, equipment, and services you'd expect from a big corporation with the individualised attention of a locally owned business. If you have any queries regarding our goods, services, or support, you may contact us by phone at +91-9650608473 or by email at enquiry@netsolwater.com

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