A kind of industrial preparation method of iron oxide resin composite adsorbent

Abstract

The invention discloses an industrial preparation method of an iron oxide resin composite absorbing agent and belongs to the field of industrial production of composite resin absorbing agents for treating wastewater. The industrial preparation method includes the steps of (A), adding strong-base anion resin into a ferric salt solution in batches, and stirring; (B), filtering, and recycling filtrate to be reused in the step (A); (C), adding the filter residues of the step (B) into a sodium hydroxide solution in batches to perform reaction, and filtering; (D), adding NaOH into the filtrate of the step (C), and reusing the filtrate in the step (C); (E), using a sodium chloride aqueous solution and water to wash the filter residues of the step (C), filtering, and drying. The industrial preparation method of the immobilized Fe (III) strong-base anion resin absorbing agent has the advantages that substances such as the ferric salt solution, alkali liquor and acid liquor can be recycled and reused, production cost and environment pollution are reduced greatly, and the method conforms to the current industrial policy of energy conservation and emission reduction of China and suitable for being industrially popularized.

Description

technical field [0001] The invention belongs to the field of industrial production of composite resin adsorbents for waste water treatment, and in particular relates to an industrial preparation method of a Fe(III)-immobilized strongly basic anion resin adsorbent whose reaction materials can be recovered and used mechanically. Background technique [0002] With the development of industry, many industrial wastewater contains toxic and harmful elements such as arsenic, antimony, and phosphorus. They are extremely toxic to the environment, organisms, and especially humans. Phosphorus can even lead to eutrophication of water bodies. In order to effectively remove this kind of pollution in water bodies, people have developed a variety of methods, including chemical precipitation, electrocoagulation, biological methods, adsorption methods, crystallization methods, and membrane separation methods, among which porous large particles of iron oxide are used The adsorption method of r...

AI Technical Summary

Problems solved by technology

However, this method is limited to the scope of small-scale experiments in the laboratory. Due to the great disparity in the amount of materials handled, there is a huge difference between laboratory preparation and chemical production. is the economy and output

In addition, factors such as heat transfer, mass transfer, flow and mixing need to be considered in the large-scale production process, so it is difficult for laboratory research results to be directly applied to industrial production

Moreover, the materials in the laboratory can be discarded directly after reaction, but in industrial production, environmental friendliness, cost, yield, etc. must be considered, so it is necessary to develop a technical solution suitable for industrial production in which materials can be recycled.

Images