It seems that these days everyone in the water treatment business is selling an air-injection iron filter.\u00a0 They market these as \u201cchemical-free iron filters\u201d and some do work\u2026 at least for a few weeks or months, unless you have high iron.\u00a0 Then they may fail sooner.\u00a0 If you have \u201clow to moderate\u201d iron, they may work for a while, but many are doomed to failure in the long-term.\u00a0 Maybe, I should have called this \u201cWHY US WATER SYSTEMS DOES NOT SELL AIR INJECTION IRON FILTERS.<\/strong>\u201d But, before we discuss why they are doomed, let me explain how they work:<\/p>\n That\u2019s how it works and it really sounds great, doesn\u2019t it?\u00a0 However, like anything it is not all 100% true.\u00a0 In fact, it may not even be 50% true.\u00a0 Here\u2019s the problem: Air is about 20% oxygen.\u00a0 100% oxygen is a wonderful oxidizer, but air is 20% of that.\u00a0 If you had an oxygen concentrator, you could make 100% oxygen and the results would be amazing. But, that would add about $3,000 to every system and the cost would become prohibitive.\u00a0 So, the reality of the situation is that any air injection system is delivering no more than 20% oxidizing capacity, unless you have 100% oxygen.<\/p>\n For the uninitiated, to remove iron, it has to be oxidized \u2013 100% oxidized!\u00a0 But how do you oxidize iron with just 20% oxygen?\u00a0 The answer is that sometimes you can\u2019t, but the amount of iron that needed to be oxidized and the oxidizer (oxygen) might not be sufficent, and therein lies the problem.\u00a0 The iron is not fully oxidized and it forms a tremendous amount of \u201ciron sludge.\u201d\u00a0 This sludge fouls the media, coats the surfaces and plugs the injector so that it can no longer draw air through its eductor.\u00a0 Then, the iron that has accumulated in the media and internal parts (and plugged the injector) continues to build up.\u00a0 The system is overwhelmed with iron sludge and ceases to work. If you think I am making this up, check out this picture that was taken in an actual application after one year on just 2 ppm of iron:<\/strong><\/p>\n Here\u2019s what happens, oxidizing iron with air containing about 20% oxygen leaves a great deal of iron sludge behind around the the top of the tank, the value and the distributor, as well as the media itself becomes overwhelmed by the sludge.\u00a0 Within a few months, the eductor (injector) is plugged with iron sludge and the water softener control value quits drawing air.\u00a0 It does nothing.\u00a0 The iron continues to build up and soon thereafter, the system is overwhelmed.\u00a0 Sometimes it simply shuts down from sludge and the flow is greatly impacted. Most of the time, you just start noticing iron stains and by the time you do something about it, it\u2019s too late.<\/p>\n There\u2019s one way to make sure your air injection system doesn\u2019t stop working and that is to disassemble the valve every 3-6 months, clean the parts with chlorine or sodium hydrosulfite and sodium metabisulfite, being sure to clean the injector assembly so as to allow it to function properly. It\u2019s probably a good idea to clean out the media with chlorine or sodium hydrosulfite and sodium metabisulfite as well.<\/p>\n Now, if that seems like a lot of work, it is.\u00a0 So, some customers just add on a room and let their local water treatment company technician live there (OK, that\u2019s just sarcasm, but you get my drift).<\/p>\n So, what is the solution?\u00a0 It\u2019s simple for us \u2013 we use H2O2 instead of Oxygen \u2013 It\u2019s a much better oxidizer than oxygen and it doesn\u2019t require that a service technician move in with you.\u00a0 Hydrogen Peroxide works every time and since it is such\u00a0 great oxidizer, it does not leave all that iron sludge to clean up and there are no injectors to plug.<\/p>\n We sell systems all over the world.\u00a0 We sell direct and eliminate-the-middlemen, so we can\u2019t send out a service tech everytime you have a problem.\u00a0 I know that people are going to write in and say that they have an air-injection iron removal system and it works, but they don\u2019t work enough of the time that we can promise it will remove the iron or sulfur.\u00a0 We can make that promise with hydrogen peroxide.\u00a0 It works EVERY TIME.\u00a0 No kidding around.<\/p>\n\n
![\"\"](\"https:\/\/water.ma\/media\/2019\/01\/The-Truth-About-Air-Injection-Iron-Filters.png\")
(commonly called and \u201ceductor\u201d or \u201cinjector\u201d) which creates a vacuum that is used to draw salt water (commonly called brine) into a media tank (usually containing cation-exchange softening resin);<\/li>\n![\"\"](\"https:\/\/water.ma\/media\/2019\/01\/The-Truth-About-Air-Injection-Iron-Filters.jpg\")