A kind of preparation method and application of high-efficiency sulfate ion adsorption material

Abstract

The invention discloses a preparation method and application for a high-efficiency sulfate ion adsorbing material. The preparation method mainly comprises the following steps of: 1, performing crosslinking modification on natural polymer polysaccharide chitosan to prepare ternary cross-linked chitosan, and performing loading modification on the modified chitosan resin to prepare ternary cross-linked and loaded chitosan. The material is used for adsorbing the sulfate ions and has a good adsorption effect; and the material has the characteristics of degradability, biocompatibility and environment-friendliness of natural chitosan and is a novel adsorption material which has development potential.

Description

technical field

[0001] The invention relates to a wastewater treatment process, in particular to the treatment of sulfate ions in wastewater, in particular to a preparation method and application of a high-efficiency sulfate ion adsorption material. Background technique

[0002] Sulfate ions exist in surface water, groundwater, or in chlor-alkali enterprise processes, ore dressing and metallurgy industries, which cause a certain degree of harm to the production process, and at the same time cause certain pollution to the surrounding environment and endanger human health. At present, the methods for removing sulfate radicals in wastewater mainly include chemical precipitation, membrane separation, neutralization recovery, biological method and adsorption method. Among them, the chemical precipitation method uses a large amount of chemicals such as barium chloride and calcium chloride, which itself will cause environmental pollution; the membrane separation method is easily af...