Loading structure for adsorbing heavy metal pollutants and preparation method and application thereof

Abstract

A loading structure for adsorbing heavy metal pollutants and a preparation method and application thereof are disclosed. The loading structure is a hollow structure obtained through 3D printing by using a 3D printing nanocomposite material which is formed by mixing a heavy metal adsorbing nano material and a 3D printing material. Devices or components of a particular shape and size are specifically designed using three-dimensional drawing software, the heavy metal adsorbing nano material is uniformly doped into that 3D printing material, a 3D printing technique is used to manufacture the device or component designed by the 3D drawing software by using the synthetic 3D printing nano composite material, and then the wastewater containing the target heavy metal pollutant is absorbed by the printed device or component. The invention avoids the agglomeration of the heavy metal adsorption material, improves the adsorption selectivity and the adsorption efficiency, is simple to use, does notcause the residue of the adsorbent after use, avoids potential secondary pollution, is easy to recover and reuse, and reduces the cost.

Description

technical field [0001] The invention belongs to the technical field of heavy metal sewage treatment, and in particular relates to a load structure for heavy metal pollutant adsorption, a preparation method and application thereof. Background technique [0002] With the rapid development of the economy, a large amount of metals such as copper, arsenic, lead, mercury, cadmium, cobalt, etc. are discharged into natural water bodies along with the waste water produced by mining, smelting industry, chemical enterprises, agricultural irrigation, etc., which not only affects the aquatic environment Cause serious pollution, but also a serious threat to human health. Existing heavy metal wastewater treatment technologies include precipitation, redox, ion exchange, adsorption, reverse osmosis, electrolysis, membrane separation, and biological treatment. Among them, the adsorption method uses a high specific surface area, insoluble solid material as an adsorbent, and adsorbs heavy meta...

AI Technical Summary

Problems solved by technology

However, there are still many problems to be solved in the application of nanomaterials in water treatment. Some nanomaterials are difficult to operate as adsorbents, difficult to recover from water, low adsorption selectivity, poor regeneration effect, high-purity nanomaterials The price is high, and it is easy to agglomerate during use to reduce the adsorption efficiency. There are different degrees of residue after use, and it is easy to migrate in the environment, but it becomes a potential source of pollution for the secondary release of heavy metals, etc.

[0004] In order to solve the above problems, modifying nanomaterials and developing different carriers for loading nanomaterials are the main research trends at present, but modified nanomaterials are often expensive and complex to synthesize, and the loading process of nanocomposites is usually Immerse the carrier material into a solution containing nanomaterials, and some only rely on the physical adsorption of the carrier material itself for loading, the degree of bonding between materials is not high, the loading stability is poor, and it is not easy to obtain stable and large quantities of finished products, and those Composite materials loaded by chemical adsorption often fall off due to the influence of environmental conditions in practical applications, which limits the adsorption efficiency

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