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A kind of dnapl and aqueous phase interfacial area determination method

A technology of interface area and measurement method, which is applied in the direction of measuring device, surface/boundary effect, instrument, etc., can solve the problems of large error, long experiment period, and high precision requirements of experimental instruments, etc. The method is simple, shortens the experiment period, and can highly operable effect

Active Publication Date: 2019-05-03
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

The above two methods have high requirements for the accuracy of the experimental equipment, the experimental period is long, and the error is large in field practical applications

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  • A kind of dnapl and aqueous phase interfacial area determination method
  • A kind of dnapl and aqueous phase interfacial area determination method
  • A kind of dnapl and aqueous phase interfacial area determination method

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[0062] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0063] The present invention is aimed at the common methods for measuring the interface area of ​​DNAPL and water phase in the existing porous media, including the interface distribution tracer method and the synchronous X-ray imaging method, which requires high precision of experimental instruments, long experimental period, and In order to solve the problem of large errors in practical field applications, a method for measuring the interface area between DNAPL and aqueous phase based on the saturation of Dense Non-Aqueous Phase Liquid (DNAPL) was proposed. At present, the determination of the interface area between DNAPL and water is mainly based on experimental methods, but the process is relatively cumbersome. Therefore, it is of great significance t...

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Abstract

The invention provides a measurement method for a dense non-aqueous phase liquid (DNAPL) and aqueous phase interfacial area. According to the method, by measuring the saturability and dissolution rate of DNAPL, and utilizing the relation between the interfacial area and the saturability and dissolution rate of the DNAPL, the interfacial area values are obtained. The two interfacial area values are endowed with set weighted values respectively, the weights are reckoned in the obtained interfacial area values respectively, a final interfacial area value is calculated, and a more precise area value is obtained. The migration distribution status of the DNAPL in underground water is objectively reflected, a decision maker is helped to select an optimal organic-contaminated groundwater repairing method. The method is simple and convenient to practice, maneuverability is high, the experimental period is shortened, and the problems of economic and time cost caused by a traditional experiment method are effectively solved. According to the technical scheme, the test precision is verified through experiments, and the method is easy to operate indoors, is not limited by complex environment conditions in actual outdoor application and has good application prospects.

Description

technical field [0001] The invention belongs to the field of environmental hydrology, and in particular relates to a method for measuring the interface area between a heavy non-aqueous phase liquid (Dense Non-Aqueous Phase Liquid, DNAPL) and a water phase. Background technique [0002] In the field of environmental hydrology, the interface area between two different liquid phases is often involved. For example, in the study of the migration and distribution of organic pollutants, the material transfer process between the non-aqueous phase liquid (Non-Aqueous Phase Liquid, NAPL) and the water phase interface, such as the dissolution or adsorption of NAPL, and the NAPL and water phase interface Therefore, the determination of the interface area between NAPL and water is of great significance for the dissolution rate of NAPL, remediation of organic pollutants and risk assessment. Dense Non-Aqueous Phase Liquid (DNAPL), a type of NAPL, has the characteristics of low water solub...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00G01N33/00
CPCG01N13/00G01N33/00
Inventor 李木子翟远征滕彦国王金生
Owner BEIJING NORMAL UNIVERSITY
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