First, the working principle of iron and manganese removal filter
The catalytic membrane acts as a catalyst for iron and manganese in water to accelerate the conversion of divalent iron into ferric iron. Separation and separation, separation of iron and manganese from water. C. Biochemical action There are iron bacteria in the catalytic membrane, and through the metabolism, the iron and manganese ions in the water are removed. In the process of oxidation of divalent iron into ferric iron, sufficient dissolved oxygen must be maintained in the water. During this process, a part of hydrogen sulfide is oxidized and stripped off, and the remaining part and tiny suspended solids in the water are adsorbed by the activated carbon adsorber.
Second, the application of iron and manganese removal filter
The professionally designed water distribution device and water collecting device ensure uniform distribution of water and water in any form of influent water, increase the filtration efficiency of the effective filtration layer, and ensure that there is no dead angle for normal filtration and backwash regeneration. In addition to high efficiency of iron and manganese, the treatment effect is stable and reliable. The entire filtration process and backwashing process can be automated by the electric actuator under the management of the monitoring system, without manual operation.
Third, the characteristics of iron and manganese removal filter
The dissolved iron and manganese in groundwater generally exist in the form of low-cost Fe2+ and Mn2+. The hypothetical compound form is bicarbonate. To remove iron and manganese from groundwater, it is necessary to oxidize ferrous iron to ferric iron. The low-priced manganese is oxidized to high-priced manganese. Under the condition of pH 6.8-7.2, the high-valent iron-manganese compound is coagulated and sedimented, and can be removed by filtration. Oxidation separation technology is used to remove iron and manganese harmful substances in water, that is, sufficient groundwater is filled with O2 or O3, and a special catalytic membrane (manganese and iron in water is formed on the gravel) distributed on the filter screen of the manganese sand filter. Under the action of MnO2 and γ-FeO(OH) precipitation, low-valent iron and manganese in water are oxidized into a combined precipitate of high-valent iron and manganese. This high-priced precipitate is trapped in the filter layer, and the iron and manganese content of the effluent meets the standard requirements.
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