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Well water, especially pantek wells, generally contain iron (iron, Fe) and manganese (manganese, Mn). The content of iron and manganese in the water comes from the soil that does contain a lot of minerals and metals dissolved in ground water. The iron dissolves in water in the form of ferrous oxide. Both of these metals, at high concentrations, cause brownish yellow stain spots for iron or black for manganese, which interferes aesthetically. The content of these two metals leaves brown and black deposits in the tub, or household appliances. Water containing iron or manganese causes clothing to become dull and not sleek after washing. Actually it is not too difficult to reduce or eliminate both types of metals from water, both of which are oxidized in contact with air. The iron is oxidized to ferrite-oxide that can precipitate, as well as manganese.
Oxidation is done in various ways, including making contact with air, known as aeration process. Among the modest ways of the acreage, the author tries the easy way and can be done by everyone. The trick, the well water is collected in a 100-liter or 200-liter plastic bar, then dipped into a bubble-making device such as those used in an aquarium. This tool can easily be found in supermarkets that sell aquarium equipment. To be more effective, buy a large enough capacity. In the installation, try to keep the air suction hose not submerged, in order to suck in as much air as possible. The bubbles that occur will cause the water to contact the air and the oxidation process occurs. As a result, oxidized iron and manganese will settle around the walls and bottom of the barrel, visible from brown or black deposits. The aerated water is then free of the interfering metals and can be used for daily purposes. This aeration process can also eliminate the odor caused by the presence of organic substances.
Clean the barrel periodically to prevent the precipitate of iron and manganese being brought back into the water. From the author's experience, if the ground water contains iron and manganese at the same time, both types of metals can not be eliminated in one process, generally the first iron is eliminated, then manganese. Therefore, it is advisable to aerate the process gradually, first to remove the iron, and the second process to remove manganese. This simple aeration method effectively reduces the iron and manganese content to below the maximum threshold according to the clean water standards of the Ministry of Health. Good luck.