Automatic titration device for anaerobic fermentation buffer ability

A technology of anaerobic fermentation and buffering capacity, which is applied in the direction of chemical analysis by titration method, can solve the problems of system stability judgment lag, high knowledge level and operating procedures, and limit the promotion and application of biogas projects, etc., to achieve reduction Reduce labor intensity, avoid human error, and improve work efficiency

Active Publication Date: 2015-07-15
CHINA AGRI UNIV
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AI Technical Summary

Problems solved by technology

Most of these methods can only detect volatile organic acids and bicarbonate alkalinity separately, and require high equipment costs, operator knowledge and operating procedures, which directly limit the popularization and application of actual biogas projects.
[0005] For large and medium-sized biogas projects with huge investment and high expected economic benefits, a stable fermentation process is crucial. However, conventional indicators such as pH value and methane yield cannot directly and accurately reflect the buffering capacity of the system, and have a great impact on the st...

Method used

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  • Automatic titration device for anaerobic fermentation buffer ability
  • Automatic titration device for anaerobic fermentation buffer ability
  • Automatic titration device for anaerobic fermentation buffer ability

Examples

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Effect test

Embodiment 1

[0053] Turn on the power switch, and the computer automatically enters the application program login interface. After the user successfully logs in, the computer enters the application program user operation interface, and automatically completes the device initialization, and provides all the titration conditions on the computer. Take 50mL artificially prepared mixed simulating sample solution of volatile fatty acids (VFA) and bicarbonate alkalinity (TIC) (wherein VFA uses CH 3 COONa solution configuration, TIC uses NaHCO 3 solution configuration), start the run button on the user interface. The application program automatically controls the 0.2mol / L dilute sulfuric acid solution to titrate the mixed simulated sample solution according to the titration conditions set by the user. The device for automatic titration of anaerobic fermentation buffer capacity of the present invention automatically determines the titration end point and displays the titration in real time on the...

Embodiment 2

[0057] After the pH electrode is calibrated, insert the titration cell sample solution once, and initialize online. Take 80mL of anaerobic fermentation broth using pig manure as raw material, and start the run button on the user interface. The application program automatically controls the 0.2mol / L dilute sulfuric acid solution to titrate the mixed simulated sample solution according to the titration conditions set by the user. The device for automatic titration of anaerobic fermentation buffer capacity of the present invention automatically determines the titration end point and displays the titration in real time on the computer. Status and titration curve. After the titration is over, the application automatically calculates, saves and displays the titration data. The titration result shows that the mass concentration of volatile fatty acids is 401.9mg CH 3 COOH / L, bicarbonate alkalinity is 7838.1mg CaCO 3 / L. The mass concentration of volatile fatty acids was 407.0...

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Abstract

The invention discloses an automatic titration device for anaerobic fermentation buffer ability, which relates to the technical field of biological fermentation and is used for solving the problem of failure in simultaneous accurate measurement of mass concentration of total inorganic carbon (TIC) and volatile fatty acids (VFA) in anaerobic fermentation broth in the prior art. The automatic titration device comprises a power module, a man-machine exchange module, a data acquisition module, a driving transmission module and a liquid sucking/dropping module. The automatic titration device adopts the combined and integrated structure, application software provides a user operation panel, the panel of corresponding actual instrument realizes control and signal expression function of the instrument, the automatic titration device can simultaneously realize accurate measurement of mass concentration of TIC and VFA in the anaerobic fermentation broth by once titration, also can realize the functions of automatic calibration of a pH meter, automatic titration and liquid supplement, real-time generation of titration curve, data processing, display and storage, is suitable for pH, TIC and VFA mass concentration determination of anaerobic fermentation broth, and also can be used for titration of other samples.

Description

technical field [0001] The invention belongs to the technical field of biological fermentation, in particular to a device for automatically titrating the buffer capacity of anaerobic fermentation. Background technique [0002] The treatment of organic waste by biogas fermentation technology can achieve the dual effects of environmental protection and energy recovery, thereby realizing the recycling and harmlessness of waste. Therefore, it is widely used in wastewater treatment, livestock and poultry manure treatment, and agricultural solid waste treatment. According to relevant statistics, as of June 2011, Beijing alone has built 259 large and medium-sized biogas projects with a total investment of 430 million yuan, including 120 large and medium-sized biogas centralized gas supply projects with an annual biogas production capacity of 16.68 million cubic meters, 132 gas supply villages, benefiting 40,000 farmers; 139 large-scale farm manure and biogas comprehensive utilizati...

Claims

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Application Information

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IPC IPC(8): G01N31/16
Inventor 董仁杰吴树彪陈新颖刘良
Owner CHINA AGRI UNIV
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