Filtering material for removing iron and manganese

Abstract

The invention relates to a filtering material for removing iron and manganese from water, and a manufacturing method thereof. The invention is characterized in that the filtering material is made by using irregular polyhedral filtration particles, which are obtained by crushing and screening building ceramic particles and of which the surfaces have pores, and by making an adhesive layer containing ferric oxide and manganese on the surfaces of the filtration particles by using a chemical or coating method. The filtering material has a large specific surface ratio, a small specific gravity and good physical and chemical properties and can be manufactured by a simple and convenient method. The water iron and manganese filtration effect of the filtering material is better than that of natural manganese sand, so the filtering material has a promising market application prospect.

Description

technical field [0001] The invention relates to a filter material for removing iron and manganese in water, which is suitable for iron and manganese removal processes in the technical field of water treatment, as a filter material for iron and manganese removal equipment, and can effectively filter iron and manganese in water, To achieve the purpose of purifying water quality. Background technique [0002] In the traditional water treatment process, the method of oxidation contact filtration is used to remove iron and manganese ions contained in raw water, and natural manganese sand is mostly used as the filter material. Due to the low content of manganese oxide in natural manganese sand, the effect of removing iron and manganese is not good. In order to improve the treatment effect, in recent years, artificial manganese sand filter materials based on machine-made ceramic granules or quartz sand have also been used to replace natural manganese sand, but there are still high...

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Problems solved by technology

However, since this type of filter material is made based on natural quartz sand such as river sand and sea sand, the disadvantages are that the filter material has low mechanical strength, poor chemical stability, and high specificity and is not easy to backwash; especially the surface area of ​​quartz sand is equivalent to natural manganese sand. The filtering effect is very limited

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