Composite adsorption membrane, preparation method and application thereof

A composite adsorption and composite hydroxide technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problems of secondary pollution of water bodies, difficult recovery, etc., and achieve simple preparation process and heavy experimentation. good effect
CN105664879BInactive Publication Date: 2019-06-07OCEAN UNIV OF CHINA
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
OCEAN UNIV OF CHINA
Publication Date
2019-06-07
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a composite adsorption film for removing fluorine in water.The composite adsorption film is prepared from, by mass, layered magnesium-aluminum composite hydroxide, a high-molecular polymer and an organic solvent.The high-molecular polymer is preferably one of polyether sulfone, polysulfone and polyvinylidene fluoride.The organic solvent is one of N,N-dimethylacetamide, N,N-dimethylformamide and N-methyl pyrrolidone.The layered magnesium-aluminum composite hydroxide is firmly inlaid in a high-molecular basement membrane, and is not prone to fall off.The composite adsorption film is applied to high-fluorine water treatment, the fluorine content can be reduced to 1 mg / L or below, and the national hygienic standard for drinking water is met.The preparation process is simple, the composite adsorption film can be machined into a film device according to needs, and industrial application can be achieved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of water treatment, in particular to a composite adsorption membrane, a preparation method and an application thereof. Background technique

[0002] Fluorine is an essential trace element for the human body, but excessive intake of fluorine can cause fluorosis and endanger human health. The Hygienic Standard for Drinking Water of the People's Republic of China stipulates that the content of fluoride in drinking water shall not be higher than 1.0mg / L. Fluorine-containing water exceeding this standard is high-fluoride water. High-fluorine groundwater is widely distributed in my country, covering 27 provinces, municipalities and autonomous regions across the country. According to incomplete statistics, at least 63 million people in my country drink high-fluorine water for a long time, so my country has become one of the main high-incidence areas of endemic skeletal fluorosis in the world.

[0003] At present, the trea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More