TANNINS DEFENDER
Well water can sometimes contain tannins. These come from humic acid, a major part of humic substances, also known as natural organic matter (NOM). NOM is the dark brown stuff found in soil, peat, coal, and even some waterways. Tannins themselves are plant-based molecules called polyphenols. They have a bitter, astringent taste and can bind to proteins, making them clump together. The term "tannin" originally referred to the substance used to tan animal hides into leather, but now it's more broadly used to describe the brownish color in water caused by decaying organic matter.
Tannin filters can be a great solution for removing tannins, which cause water to turn brown and have an unpleasant taste. These filters use a process called ion exchange to trap tannins. They are self-cleaning and regenerate automatically with salt, similar to how water softeners work.
Tannin filters are a cost-effective option, especially when compared to addressing the root cause of tannin contamination, such as sealing your well from surface runoff. This can be a difficult or expensive fix, and tannin filters provide a reliable way to treat the water itself.
While tannins can sometimes occur alongside iron or manganese, these minerals themselves are more likely to cause the water's discoloration. Iron and manganese can stain water red, rust-colored, brown, tan, black, or greenish. Fortunately, chlorine or ozone treatment followed by a suitable iron filter can effectively remove both tannins and oxidized iron particles.
We've found success in removing tannins from well water using a flocculant, like Cat-Floc-TL. Flocculants target tiny color-causing particles by neutralizing their positive charge. This makes them clump together (flocculate) into larger, easier-to-remove particles.
In small systems, a metering pump can inject 2-5 ppm of Cat-Floc (or a similar flocculant) into the water stream as it enters a holding or storage tank. After settling time, filtration removes any remaining floc, leaving clearer water.
A very effective method to remove tannin color is by using ultrafiltration (“UF”) membrane systems. Ultrafiltration (UF) membrane systems are a powerful tool for eliminating tannin stains from water. These systems are suitable for various applications, including:
Homes
Small communities
Commercial settings
UF effectively reduces turbidity, leaving you with crystal-clear water that measures less than 0.1 NTU. It's important to pretreat your water properly before using UF if it contains iron, manganese, or hardness minerals. This will ensure the UF system functions optimally for long-lasting, tannin-free water.
For cloudy water, a two-step approach might be best. First, if necessary, pre-treatment with chlorine or ozone can be used. Then, a backwashing sediment filter with specialized zeolite media can effectively clarify the water. This filter removes particles as small as 5-10 microns and can be automatically cleaned by the control valve at regular intervals.
There are several factors to consider when treating colored water, like the makeup of the water itself, how fast it's flowing, how germs will be removed, and what kind of filters to use. Sometimes, additional methods like reverse osmosis or nanofiltration are used instead of, or along with, adding chemicals and letting solids settle out, to remove the color
Say no to colored water through the Tannins Defender water system
Tannins form in the water, they are the organic matter that forms through the natural fermentation processes. It happens when the water passes through muddy ground, swamps, or decaying vegetation. Tannins lead to the discoloration of water, as well as a bad odor coming from it when comes in contact. The water can be like different colors like brown, green, rust, or black, this can be due to the mixture of the different chemical compounds. We offer tannins defender water system, to help you with such encounters.
The system contains the tannin water filter that is responsible for removing the tannins through an exchange of ions using the ion exchange media. It is a low-cost technology that helps get rid of the gunk picked up by the ground or low-water areas. Ultra-filtration systems can also help remove tannins.
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