Method for detecting content of petroleum hydrocarbon in oil-containing wastewater
A technology for petroleum and hydrocarbon content in China, which is applied in the direction of using microwaves to test moisture content, etc., can solve the problems of no specific technology disclosure, and achieve the effect of simple pretreatment method, low cost and high sensitivity
Active Publication Date: 2017-11-10
DALIAN UNIV OF TECH
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However, no specific technology has disclosed a technical solution for applying it to the analysis of petroleum hydrocarbon content in oily sewage
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[0029] In order to achieve the above effects, the invention will be further described below in conjunction with the accompanying drawings and examples: A method for detecting the content of petroleum hydrocarbons in oily wastewater mainly includes oily wastewater pretreatment, test system design and assembly, establishment of standard curves, sample detection and results calculate.
[0030] Take the stock solution of crude oil dissolved in petroleum ether, the concentration of crude oil is 2g / L, put 0.5mL in a 10mL colorimetric tube, dilute to the volume with petroleum ether, shake well, and obtain at least five groups of different concentrations of 100mg / L, 50mg / L, 30mg / L, 20mg / L and 10mg / L petroleum hydrocarbon standard solutions;
[0031] Utilizing the difference in solubility of petroleum hydrocarbons in water and organic solvents, the present invention uses petroleum ether to extract petroleum hydrocarbons in oily wastewater. In order to ensure complete extraction, the vi...
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The invention provides a method for detecting the content of petroleum hydrocarbon in oil-containing wastewater. The method comprises two main parts of extraction and microwave detection of the petroleum hydrocarbon in the wastewater. As for sample solutions with identical components and different concentrations, dielectric constants of the sample solutions are different. When microwave interacts with the petroleum hydrocarbon with different concentrations, characteristic parameters of a microwave signal are changed. The method disclosed by the invention is characterized in that an insertion loss parameter (S12) is selected as characteristic quantity, and the content of the petroleum hydrocarbon in a wastewater system is analyzed according to the pre-established corresponding relationship between the different concentrations of the petroleum hydrocarbon and a characteristic S12 parameter value. The method for detecting the content of the petroleum hydrocarbon in the wastewater, provided by the invention, has the advantages of low cost, simple pretreatment method for samples and the like; a testing system involved in the invention has relatively-high sensitivity; the detection limit of the method can reach 0. 2mg / L and is far below a pollution limit stipulated by national standard.
Description
technical field [0001] The invention belongs to the field of petroleum detection and relates to a method for detecting the content of petroleum hydrocarbons in oily wastewater Background technique [0002] With the rapid development of economy, petroleum hydrocarbon pollution has become a worldwide problem. Oil extraction, smelting, transportation, frequent occurrence of various oil spills, and urban sewage and waste discharged from daily human activities are all important sources of petroleum hydrocarbon pollution. Different fractions of petroleum hydrocarbon pollutants will cause different degrees of pollution and damage to humans, animals, plants, and the ecological environment, especially the carcinogenicity, teratogenicity, and mutagenicity of polycyclic aromatic hydrocarbons, which will directly affect marine organisms through the food chain. to human health. Therefore, it is of great significance to find an effective detection method for petroleum hydrocarbons to ef...
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Login to View More IPC IPC(8): G01N22/04
CPCG01N22/04
Inventor 穆罕默德·拉塞尔李小猛孙振翔刘长睿曲美雪
Owner DALIAN UNIV OF TECH