Harn R/O Systems Blog

How Much Water Do Americans Use Versus Other Countries?

Posted by Julie Nemeth-Harn on May 24, 2018 10:28:00 AM

Much of the environmental discussion of the new millennium has been centered on an individual’s carbon footprint. From running the shower to the continuous flow of the faucet as you brush your teeth, we have all heard statistics regarding how much water we use. Similar to our carbon footprint, we can estimate our individual water footprint.

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Topics: water treatment, water footprint, water

4 Reasons You Need to Replace Your Conventional Water Treatment Plant with a Membrane Water Treatment System

Posted by Julie Nemeth-Harn on May 1, 2018 2:48:00 PM

Water quality and purification processes have improved over time, while demand for drinkable water has increased. Today’s membrane treatment plants can be tailored to the overall composition of water to be processed, and the membrane treatment methods used can reduce more possible contaminants. Where the desired outcome is stable, clean water with an appreciable return on the investment, upgrading to a membrane water treatment system is backed by cutting edge industry science.
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Topics: membrane treatment system, water treatment, water quality, water purification process

Why Daily Data Collection is Important and What Parameters to Use to Monitor Your Membrane System

Posted by Julie Nemeth-Harn on Apr 24, 2018 11:25:00 AM

An important part of operating membrane systems is accurate data collection on a daily basis.  The data will help predict normal maintenance schedules and will help determine the cause of any system upsets.  Comprehensive data is very useful in determining when the membranes need to be chemically cleaned, or eventually replaced. It also alerts the operator to changes taking place such as fouling, leaking “O” rings etc.

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Topics: membrane treatment system, membrane treatment, water treatment, water quality, silt density index

Everything You Need to Know About Membrane Cleaning

Posted by Julie Nemeth-Harn on Apr 18, 2018 11:10:00 AM

During normal operation of an R/O water treatment system, the membrane elements will often suffer a reduction in performance due to the accumulation of small particles, colloids, microorganisms, or precipitated salts collecting on the membrane surface. 

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Topics: membrane filtration, membrane treatment system, membrane treatment, water treatment, save water, save money

Pretreatment: The Last Line of Defense for Your R/O Membranes

Posted by Julie Nemeth-Harn on Apr 10, 2018 11:53:00 AM

Pretreatment Equipment - Theory of Operation

Some raw feed waters contain suspended particulate material. This material is commonly sand, iron oxides, clay or elemental sulfur.

Introduction of such materials into the membrane system can cause the development of excessive system differential pressure (dP), or even complete blockage of the brine channels with the resultant reduction of permeate flow. It can also cause physical damage to the membranes themselves. This usually results in a decrease of permeate quality and reduction of membrane life. Cartridge filtration is normally a simple and cost-effective way to reduce the amount of particulate matter reaching the membrane surface.

Interested in a Membrane Filtration Pilot Package?

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Topics: membrane filtration, membrane treatment system, membrane treatment, water treatment, membrane plants, water quality, ro calculations

How to Calculate Percent Recovery and What Affects it in a Membrane Treatment System?

Posted by Julie Nemeth-Harn on Apr 3, 2018 1:10:00 PM

RECOVERY RATE

Recovery is the amount of water permeated per unit time - usually in gallons per minute (gpm) and expressed as a percentage of the raw water feed flow rate. The design recovery is calculated as follows:

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Topics: membrane filtration, membrane treatment system, membrane treatment, water treatment, membrane plants, water quality, ro calculations