Online monitoring early-warning device and method for anaerobic fermentation process

Abstract

The invention discloses an online monitoring early-warning device and method for the anaerobic fermentation process. The device comprises a sample collection system, a sample processing system, a medicament adding system, a gas collecting and feeding system, a data collection system and an automatic control system; the sample collection system and the medicament adding system are communicated to the sample processing system via pipes; the sample processing system is successively connected with the gas collecting and feeding system and the data collection system via pipes; and the automatic control system controls running of different parts of the sample collection system, the sample processing system, the medicament adding system, the gas collecting and feeding system and the data collection system via a data transmission line. The device combines a distillation method with a gas chromatography method, online volatile acid detection is realized by the distillation-gas chromatography method, the disadvantage that the distillation method is not accurate in result and the chromatography method is tedious is overcome, and amount change of the volatile acid and content change of different components in the volatile acid can be monitored.

Description

technical field [0001] The invention belongs to an online early warning system device and method, in particular to a device and method for online monitoring and early warning anaerobic fermentation process. Background technique [0002] Anaerobic fermentation is an environmentally friendly and effective technology for treating organic waste and producing biogas, which has been widely used in the field of organic waste. However, the operation stability of the anaerobic fermentation process is often affected by many factors, such as raw material properties, influent load, hydraulic retention time, etc. When these factors change, the hydrolytic acidification process and the methanogenic process of fermentation tend to fluctuate or become unbalanced, causing rancidity to occur. For example, when the influent load is too high, the organic matter will be degraded by the acid-producing bacteria in a short period of time, and the organic acid produced cannot be decomposed by the me...

AI Technical Summary

Problems solved by technology

[0013] The first technical problem to be solved by the present invention is to provide a device for on-line monitoring and early warning anaerobic fermentation process; the device combines distillation with gas chromatography to realize on-line volatile acid detection by distillation-gas chromatography, namely It avoids the inaccurate titration results of the distillation method and the cumbersome steps of manual sample preparation in the early stage of chromatography. It can also monitor the changes in the total amount of volatile acids in the anaerobic fermentation and the changes in the contents of each component in the volatile acids. Early warning is more accurate

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