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Method for detecting quality index of biogas slurry based on near infrared spectrum

A near-infrared spectroscopy and quality index technology, applied in the field of biogas slurry detection, can solve the problems of slow speed, low detection efficiency and accuracy of near-infrared spectroscopy, and high test cost, and achieve synchronous rapid detection, fast detection speed, and reduced search time. Effect

Inactive Publication Date: 2022-06-28
NORTHEAST AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0004] The problem to be solved by the present invention is at least one aspect of the existing traditional biogas slurry quality index content testing cost is high, the speed is slow, or the detection efficiency and accuracy of near-infrared spectroscopy are generally low

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  • Method for detecting quality index of biogas slurry based on near infrared spectrum

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[0036] The technical solutions in the embodiments of the present application will be described clearly and in detail below with reference to the accompanying drawings.

[0037] In the description of the embodiments of the present application, the term "some embodiments" description means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] like figure 1 As shown, an embodiment of the present invention provides a method for detecting biogas slurry quality indicators based on near-infrared spectroscopy, comprising the following st...

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Abstract

The invention provides a method for detecting the quality index of biogas slurry based on near infrared spectroscopy, and relates to the technical field of biogas slurry detection.The method comprises the steps that corn straw and cow dung samples are collected and subjected to anaerobic fermentation, and then a biogas slurry sample is obtained; detecting the quality index of the biogas slurry to obtain the initial value of the quality index of the biogas slurry sample; performing transmission spectrum scanning to obtain a near infrared spectrum of the biogas slurry sample; performing characteristic wavelength optimization based on a reverse interval partial least square method and an invasive weed optimization algorithm to obtain a sample characteristic wavelength optimization value; establishing a quantitative detection model based on the optimal value of the characteristic wavelength of the sample; and performing transmission spectrum scanning on target biogas slurry to obtain a target characteristic wavelength optimal value, and obtaining a quality index value of the target biogas slurry according to the target characteristic wavelength optimal value and the quantitative detection model. Compared with the prior art, the detection speed is high, the precision is high, and synchronous and rapid detection of biogas slurry quality indexes can be realized.

Description

technical field [0001] The invention relates to the technical field of biogas slurry detection, in particular to a method for detecting biogas slurry quality indicators based on near-infrared spectroscopy. Background technique [0002] The biogas slurry produced by anaerobic fermentation can be used as fertilizer, used to soak seeds, prevent pests and diseases, and can also be used as livestock and poultry feed. Therefore, the rational use of biogas slurry can effectively promote the utilization of biogas of agricultural and animal husbandry wastes, and the quality indicators of biogas slurry such as nitrogen, organic matter and Escherichia coli are important indicators to detect whether the biogas slurry is available. Among them, Escherichia coli belongs to bacterial microorganisms, and the detection of its content has an important impact on the quality of biogas slurry. However, there are problems of high test cost and slow speed when using traditional determination metho...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3577G01N21/359G06N3/00
CPCG01N21/3577G01N21/359G06N3/006
Inventor 许永花陈少鹏曲京博罗丽娜张鸿琼孙勇
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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