Hydrogel material for treating heavy metal containing sewage and preparation method of hydrogel material

Abstract

The invention discloses a hydrogel material for treating heavy metal containing sewage. The hydrogel material is mainly prepared from, by weight, 30-50 parts of methacrylic acid, 20-30 parts of polyethylene glycol, 10-15 parts of sepiolite, 5.0-7.0 parts of polyvinyl alcohol, 3.0-5.0 parts of humic acid, 0.4-0.6 part of ammonium persulfate, 0.05-0.10 part of aluminum sulfate and 0.05-0.10 part of N,N'-methylene bisacrylamide. The reinforcing function of humic acid and sepiolite is utilized, humic acid and sepiolite are evenly inserted into a three-dimensional network hydrogel material formed by methacrylic acid, polyethylene glycol and polyvinyl alcohol, and the hydrogel material with good adsorption efficiency on heavy metal ions, the large adsorption amount, a stable structure and excellent mechanical performance is formed. Production cost is reduced, meanwhile, the thermal decomposition temperature of the material is raised, the service life of the material is prolonged, and the hydrogel material is suitable for the sewage treatment technology. The invention further discloses a preparation method of the hydrogel material for treating the heavy metal containing sewage. The production process is simple, cost is low, safety and environment friendliness are achieved, and market application prospects are achieved.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a hydrogel material used for treating sewage containing heavy metals and a preparation method thereof. Background technique [0002] With the rapid development of modern industry and rapid economic growth, the traditional extensive and labor-intensive economic development model has brought a series of environmental problems. Among them, the problem of water pollution is particularly serious. At present, water pollution has become a major problem that restricts economic development, affects social stability, endangers human health and destroys ecological balance. At the same time, my country's natural water resources are extremely limited. Therefore, the development and innovation of sewage treatment and sewage resource technology should be further valued. [0003] Chinese Patent Publication No. CN103804828A discloses a composite hydrogel for absorbing heavy metal ions a...

AI Technical Summary

Problems solved by technology

The hydrogel of this invention can efficiently adsorb heavy metal ions in water, and has the characteristics of high adsorption capacity, high selectivity, recyclable utilization, and biodegradability; however, the hydrogel material prepared by this invention has poor structural stability and long service life. short

[0006] With the rapid development of my country's economy and industrial technology, more and more attention has been paid to environmental issues. Sewage treatment materials have become an important part of sewage treatment technology and have attracted attention from various fields. However, the hydrogel materials currently used for sewage treatment There are fewer types, which greatly limits the selection of sewage treatment materials. Therefore, it is necessary to develop a hydrogel material suitable for sewage treatment that has good adsorption efficiency for heavy metal ions in sewage, large adsorption capacity, and excellent mechanical properties. materials, it is of great significance to promote the development of sewage treatment