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Anaerobic digestion multiphase sampling method

A technology of anaerobic digestion and sampling tubes, applied in the direction of sampling devices, etc., can solve the problems of affecting the mixing effect and clogging, and achieve the effect of accelerating the separation of dissolved biogas and material gas-liquid

Inactive Publication Date: 2020-07-10
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the air injection device with small holes at the bottom is easy to block in the environment with high material concentration, thus affecting the stirring effect

Method used

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  • Anaerobic digestion multiphase sampling method

Examples

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Effect test

Embodiment 1

[0033] An anaerobic digestion multiphase sampling device based on an anaerobic digestion multiphase sampling method, as attached figure 1 As shown, it mainly includes an anaerobic digestion bottle, which contains materials, and materials with different specific gravity are naturally stratified under the action of gravity in a static state, and the material with the smallest specific gravity floats on the uppermost layer to form a scum layer. The lower layer is a clear liquid layer, and the lowermost layer is a solid phase layer; the top of the anaerobic digestion bottle is provided with a rubber stopper, and the rubber stopper is provided with double holes, which are respectively connected to the air guide tube and the catheter tube (10); The air guide tube leads into the anaerobic digestion bottle and its lower port keeps a certain distance from the scum layer; the liquid guide tube (10) leads into the clear liquid layer inside the anaerobic digestion bottle at one end, and co...

Embodiment 2

[0035] When the present invention carries out solid-phase sampling, as attached figure 2 As shown, the a and c ends of the three-way valve knob are respectively connected to the sampling tube and the leakage tube of the anaerobic digestion bottle, and the liquid pump (11) is in the closed state; at this time, the sampling tube and the leakage tube are connected, and the catheter ( 10) Close, the material in the solid phase layer flows out naturally under the action of gravity, and the solid phase sampling process is completed.

Embodiment 3

[0037] When the present invention carries out liquid phase sampling, as attached image 3 As shown, connect the a and b ends of the three-way valve knob to the catheter (10) and the sampling tube respectively, and the liquid pump (11) is in the open state; at this time, the catheter (10) is connected to the sampling tube, and the leakage The tube is closed, and the sample flows out from the supernatant layer under the action of the liquid pump (11), completing the liquid phase sampling process.

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Abstract

The invention relates to an anaerobic digestion multiphase sampling method based on an anaerobic digestion multi-phase sampling method mainly comprising an anaerobic digestion bottle. Materials are contained in the anaerobic digestion bottle and are sequentially layered into a dross layer, a clear liquid layer and a solid phase layer from top to bottom; a rubber plug is arranged at the top of theanaerobic digestion bottle, and a gas guide pipe and a liquid guide pipe are connected to the rubber plug; a leakage pipe is arranged at the bottom of the anaerobic digestion bottle, the top end of the leakage pipe is communicated with the solid-phase layer, and the tail end is connected with a three-way valve; and three ports of the three-way valve are respectively connected with the leakage pipe, the liquid guide pipe and the sampling pipe. The invention provides an anaerobic digestion multiphase sampling method which is convenient to operate and is used for obtaining samples of different phases required by different research requirements and different periods of anaerobic digestion.

Description

technical field [0001] The invention belongs to the field of anaerobic digestion, and in particular relates to a multiphase sampling method for anaerobic digestion. Background technique [0002] In recent years, the method of adding porous solid particles, such as granular biochar, to the anaerobic digestion system to improve the quality and efficiency of biogas has been favored by researchers. However, the acquisition of solid particles in anaerobic digestion experiments is an operational difficulty because the combination process of solid particles with microorganisms after they are added to the anaerobic digestion system requires continuous sampling research. Due to the low density of solid particles and the complex relationship with microorganisms, the state of solid particles and their positions in the fermentation device are also different in different anaerobic digestion periods. For example, in the initial stage of adding solid particles, the solid particles tend to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14G01N1/02
CPCG01N1/02G01N1/14
Inventor 陈潇林菲
Owner NORTHWEST A & F UNIV
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