Device for liquid film extraction and extraction method
An extraction and liquid film technology, which is applied in the direction of liquid solution solvent extraction, separation method, solvent extraction, etc., can solve the problems of low extraction efficiency, insufficient contact of mixed liquid, complex device structure, etc., to achieve improved extraction efficiency, low cost, small size effect
Active Publication Date: 2021-06-04
SOUTHWEST UNIVERSITY FOR NATIONALITIES
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Problems solved by technology
At present, when liquid membrane extraction is performed, the liquid to be treated is generally mixed with the emulsion and then passed through a large filter to flow slowly to promote the heavy metal or organic matter to be recovered from the outer phase to the membrane phase, and then to the inner phase. The entire device The structure is more complicated, so it is not suitable for treating small waste liquids such as circuit board waste water and food additive waste liquid, and the contact of the mixed liquid in the filter is not sufficient, and the extraction efficiency is low
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[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] Such as figure 1 As shown, the present invention includes a main body structure formed by alternately stacking at least one hydrophilic plate 1 and at least one hydrophobic plate 2. The main structure is provided with a microchannel extending along its stacking direction, and the microchannel has Two inlets 3 and one outlet 4, the microchannels are connected by etching grooves 5 arranged on the hydrophilic plate 1 and the hydrophobic plate 2. Each hydrophilic plate 1 and hydrophobic plate 2 is provided with a section of etching groove 5 or a through hole, which can also be replaced by a hollow groove. After overlapping, a complete microchannel passing through the main structure is formed. The shape of the microchannel is It can be linear, zigzag or helical, and the hydraulic diameter of the channel is usually 5-1000 μm. The working principle of the microchanne...
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The invention discloses a device and an extraction method for liquid membrane extraction in the technical field of liquid membrane extraction. The device comprises a main body structure formed by alternately overlapping at least one hydrophilic plate and at least one hydrophobic plate. The structure is provided with a microchannel extending along its superimposing direction, the microchannel has two inlets and an outlet, and the microchannel is connected by an etching groove or a hollow groove arranged on the hydrophilic plate and the hydrophobic plate The extraction method mainly uses the liquid membrane extraction device to flow the mixed liquid. Due to the large specific surface area in the microchannel, the liquid membrane can be in good contact with the liquid to be treated, which greatly improves the extraction efficiency. The entire extraction process is shortened to seconds. In addition, the entire microchannel device is small in size, low in cost, and flexible in operation, and can be applied to various waste liquid treatment occasions with large and small volumes at the same time, not only for chemical and environmental waste liquid treatment, but also for scientific research laboratory waste liquid treatment. liquid treatment.
Description
technical field [0001] The invention relates to the technical field of liquid film extraction, in particular to a device and an extraction method for liquid film extraction. Background technique [0002] In the production process of metallurgy, electroplating, electrolysis, chemical industry and other industries, a large amount of wastewater containing heavy metals and wastewater containing organic substances will be produced. The discharge of heavy metal compounds and organic substances into water bodies is difficult to degrade and destroy naturally, which will cause great harm to the environment, and It will be accompanied by waste of resources and energy. The mass transfer separation process of liquid membrane extraction technology simulates the separation function of biofilm, which can separate heavy metals and organic pollutants very well. At present, when liquid membrane extraction is performed, the liquid to be treated is generally mixed with the emulsion and then pa...
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IPC IPC(8): B01D11/04B01D61/38
CPCB01D11/0415B01D61/38
Inventor 陈晓蒲亚东阮达马正东潘美英赵志刚
Owner SOUTHWEST UNIVERSITY FOR NATIONALITIES