Deferrization demanganization modified filter material using volcanic rock as carrier and its preparation method

Abstract

The invention discloses an iron and manganese removal modified filter medium which takes volcanic rock as a carrier, as well as the preparation method thereof. The carrier of the modified filter medium is the volcanic rock coated with a polycondensate modifier. The volcanic rock is firstly pretreated by an acidic reagent, and then the pretreated volcanic rock is coated with a polycondensate modified mixed liquor, thereby realizing the modification to the volcanic rock. The modified volcanic rock filter medium can have better removal effect on iron ions and manganese ions in the neutral or the slightly acidic environment, thereby effectively removing the iron ions and the manganese ions in the mine water, realizing the resource recovery of the mine water and relieving the water using problem existing in the arid water shortage area; and the starting time is short, thereby having good effect on removing the heavy metal ions and the chroma in the industrial wastewater.

Description

Modified filter material for removing iron and manganese with volcanic rock as carrier and preparation method thereof technical field The invention relates to a manufacturing technology of a modified filter material, in particular to a modified filter material for removing iron and manganese and a preparation method thereof. Background technique The modified filter material in the prior art is mainly used for removing negatively charged ions or groups in sewage, such as removing fluoride ions, removing arsenic acid radical ions, removing organic matter, and the like. There is following shortcoming in above-mentioned prior art: When the modified filter material in the prior art is applied to remove metal cations in sewage, since the filter material is positively charged in neutral or slightly acidic sewage, the effect of adsorbing metal cations is not obvious, especially for removing iron ions and manganese ions in wastewater. The effect is poor. Contents of the invent...

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Problems solved by technology

When the modified filter material in the prior art is applied to remove metal cations in sewage, since the filter material is positively charged in neutral or slightly acidic sewage, the effect of adsorbing metal cations is not obvious, especially for removing iron ions and manganese ions in wastewater. less effective