Harn R/O Systems Blog

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

Posted by Julie Nemeth-Harn on Oct 5, 2020 1:10:00 PM

Membrane systems operating at 82% recovery will convert 82% of the total raw water input into treated permeate, with the remaining 18% being sent to waste as concentrate (or reject). The recovery rate is monitored using flow meters installed in the permeate and concentrate piping.

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

4 Reasons You Need to Replace Your Conventional Water Treatment

Posted by Julie Nemeth-Harn on Sep 8, 2020 11:15:00 AM


Water quality and purification processes have improved greatly over recent years alongside the demand for drinkable water which has also increased. Today’s membrane treatment plants can be tailored to fit specific needs and the membrane treatment methods used can reduce contaminants more than ever before. 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

Everything You Need to Know About Membrane Cleaning

Posted by Julie Nemeth-Harn on Aug 17, 2020 9:45:00 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

What is Membrane Water Treatment Technology and Why Do We Specialize In It?

Posted by Julie Nemeth-Harn on Aug 3, 2020 10:15:00 AM

Membrane water treatment is a process that removes unwanted constituents from water. A membrane is a barrier that allows certain substances to pass through while blocking others. Water treatment facilities use various types of membranes and processes to clean surface water, groundwater, and wastewater to produce water for industry and for drinking.

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Topics: membrane filtration, membrane treatment system, reverse osmosis, desalination, clean drinking water

8 Simple Steps for Performing a Successful Membrane Installation

Posted by Julie Nemeth-Harn on Jul 20, 2020 9:00:00 AM

Membranes are loaded from the feed end of the pressure vessel. To better understand the installation procedure, the following definitions are helpful:

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Topics: membrane treatment system, membrane treatment, water treatment, water quality

How to calculate Anti-Scalant Feed Dosage?

Posted by Julie Nemeth-Harn on Jul 6, 2020 10:15:00 AM

There exists a potential for calcium, barium, strontium, fluoride and silica compounds to precipitate in the concentrate or brine channels of the reverse osmosis membranes. Precipitation occurs when the solubility limits of these various salts and silica is exceeded. 

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Topics: membrane treatment system, membrane treatment, water treatment, scale inhibitor