Harn R/O Systems Blog

Julie Nemeth-Harn

Recent Posts

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

How Much Water on Earth is Drinkable?

Posted by Julie Nemeth-Harn on Jun 23, 2020 8:30:00 AM

Water is one of the most important commodities that supports life on earth but very few understand how hard it is to get clean, potable freshwater. Water, in all its forms, covers three quarters of the Earth's surface. The water levels on Earth remain relatively the same each year. Every day, water goes through a cycle that sees it flow from land, to the seas and then evaporates into the atmosphere through the processes of evaporation and precipitation.

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Topics: membrane filtration, membrane treatment system, reverse osmosis, membrane treatment, water treatment, clean drinking water, membrane plants, water recycling, water quality, water purification process, save water

Water Recycling on the International Space Station

Posted by Julie Nemeth-Harn on Jun 1, 2020 9:00:00 AM

Going into space takes a lot of forethought. Astronauts may seem super human, but the fact of the matter is they need the same things everyday people need. That includes water. The International Space Station is a completely closed system that needs to be able to operate without outside interference. It would be very hard to deliver necessities to the station on a regular basis, especially things that are constantly used, like water.

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Topics: water treatment

5 Ways to Save Water and Save Money During Restricted Water Usage

Posted by Julie Nemeth-Harn on Feb 28, 2020 10:46:00 AM

With growing worries about water scarcity, the need for businesses and homeowners to conserve water is becoming more and more evident. Fortunately, many of the ways that you can save water on an individual basis are free or inexpensive. Furthermore, almost all of them are relatively easy to implement. Consider the following ways to save both money and water:

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Topics: membrane filtration, save water, save money

What is the Reverse Osmosis Equipment Manufacturer's (ROEM) Role in Membrane Water Treatment?

Posted by Julie Nemeth-Harn on Feb 14, 2020 11:00:00 AM

In conventional construction projects there are three main parties: the water treatment plant owner, the engineer, and the contractor. In specialized process projects a system supplier with particular expertise on the process is also usually involved. This party is also called an Original Equipment Manufacturer (OEM). For membrane treatment projects this entity is commonly called the Reverse Osmosis Equipment Manufacturer (ROEM) or the Membrane System Supplier (MSS). The ROEM or MSS may have a separate contract with the water treatment plant owner, or they may be a subcontractor to either the engineer or the main general contractor.

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Topics: membrane treatment system, reverse osmosis