Charcoal and iron composite material and preparation method thereof

Abstract

The invention provides a charcoal and iron composite material and a preparation method thereof. The charcoal and iron composite material consists of carbon-base nano hydroxyl iron and microorganism which is immobilized on the carbon-base nano hydroxyl iron and has a capacity of degrading polluting inorganic salt in water, wherein the carbon-base nano hydroxyl iron is additionally composed of activated carbon and nano hydroxyl iron supported on the activated carbon, because the carbon-base nano hydroxyl iron can adsorb the polluting inorganic salt in the water, and specially domesticated microorganism having special degrading capacity on the polluting inorganic salt can rapidly degrade adsorbed and enriched polluting inorganic salt; therefore, the charcoal and iron composite material disclosed by the invention can organically combine a physical adsorption water purification method and a biodegradation water purification method when purifying water, so as to simultaneously adsorb and degrade the polluting inorganic salt in the water, thus greatly improving water purification efficiency.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a biochar-iron composite material and a preparation method thereof. Background technique [0002] Perchlorate is one of the common pollutants in tap water, which is very harmful to human health. Because its physical and chemical properties are quite stable, it is difficult to degrade under normal circumstances, so it is difficult to remove from tap water. At present, the means of purifying perchlorate in tap water are mainly physical adsorption and biodegradation. [0003] The physical adsorption method is to load the adsorption medium including iron salts with certain adsorption capacity on the activated carbon on the activated carbon. When the tap water passes through the activated carbon loaded with iron salts, the perchlorate in the tap water will be absorbed by the iron salts. Salt adsorption. However, due to the limited adsorption capacity of iron salts, the adsorp...

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Problems solved by technology

Although this method is highly targeted, it has high requirements on the growth conditions of microorganisms. If the growth state of microorganisms is not good, the overall degradation efficiency of this method is not high; on the other hand, the subsequent treatment of microorganisms is also more troublesome.

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