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.

Read More

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

The Power of Automation in a Membrane Water Treatment Plant

Posted by Julie Nemeth-Harn on Sep 21, 2020 10:15:00 AM


From IT computer server rooms to automotive factories, improved productivity is a reality thanks to modern automation technologies. Membrane water treatment plant operations can be supervised by the same intelligent controls, easy-to-use human interfaces, and industrial SCADA (Supervisory Control and Data Acquisition) systems that are used in other industries.

Read More

Topics: water treatment, design-build

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.

Read More

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. 

Read More

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

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.

Read More

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.

Read More

Topics: water treatment