Method for removing iron and manganese from rural underground drinking water
A drinking water and rural technology, applied in the direction of contaminated groundwater/leachate treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problems that are difficult to put into practical application, immature active filter membrane, and inconvenient operation and management and other issues to achieve the effect of easy implementation, low cost, and improved processing efficiency
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[0019] A method for removing iron and manganese from underground drinking water in rural areas, the steps are as follows:
[0020] 1) Use jet aeration system to remove part of ferrous iron in underground drinking water:
[0021] The extracted underground drinking water enters the jet aeration system. The jet aeration system is equipped with a jet aerator and makes the underground drinking water fully contact with oxygen, oxidizes ferrous iron to ferric iron and then forms ferric hydroxide precipitate, which can be filtered and removed;
[0022] 2) Use biofilter system to remove remaining ferrous iron and manganese in underground drinking water:
[0023] The underground drinking water through the jet aeration system enters the biofilter system. The jet aeration system is composed of single-row series or double-row series biofilters. The biofilter is filled with biological fillers. Quartz sand and gravel of 7-10mm, the middle part is manganese sand with a particle size of 5-7mm...
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