Method for preparing composite assembled object of magnetic ferriferous oxide/ molecular sieve of Nano zeolite

Abstract

This invention relates to a method for preparing magnetic iron oxide / nanoscale zeolite molecular sieve composite. The method comprises: (1) selecting nanoscale zeolite crystal material; (2) introducing Fe2+ / Fe3+ as active reaction sites through ion exchange under the action of electrostatic attraction; (3) dropping 25% ammonia solution for reaction of the active sites in an alkaline medium, washing with water and drying; (4) removing phosphate ions and arsenate ions from water by using a dynamic adsorption apparatus. The method has such advantages as low cost, simple operation and high adsorption rate, and can be widely used for water purification.

Description

technical field

[0001] The invention relates to a preparation method for water body purification used in the technical field of environmental protection, in particular to a preparation method for a magnetic iron oxide / nano zeolite molecular sieve composite assembly. Background technique

[0002] The eutrophication of the water body will lead to serious consequences such as the proliferation of plants and algae in the water, the decrease of oxygen content, and the deterioration of water quality. Phosphorus plays a special role in the eutrophication of water bodies. At present, the problem of inorganic phosphorus pollution in seawater in Taizhou and other southeast coastal areas of our country has attracted great attention from relevant governments. The extensive use of phosphorus-containing washing powder and phosphorus-nitrogen fertilizers is the main "killer" that causes phosphorus pollution in water bodies. Because phosphorus is an important element needed for the growth...