Bioreactor for online automatic pH control and control method thereof

Abstract

The invention discloses a bioreactor for online automatic pH control. The bioreactor comprises a data acquisition controller, an alkali storage tank, an acid storage tank, a regulation tank and a biological reaction tank, wherein the data acquisition controller comprises a pH acquisition unit, a liquid level acquisition unit and an electromagnetic valve which are connected with a peristaltic pump control unit; the alkali storage tank and the acid storage tank are connected with the regulation tank and the biological reaction tank through a pipeline with an electromagnetic valve; a liquid inlet of the regulation tank is connected with the biological reaction tank through a pipeline with a peristaltic pump, and a liquid outlet is connected with the biological reaction tank through the pipeline with an electromagnetic valve; the regulation tank is provided with a pH meter and a liquid level meter; the biological reaction tank is provided with a gas outlet, a stirrer and a liquid level meter; the pH meter is connected with the pH acquisition unit; the liquid level meter is connected with the liquid level acquisition unit; the electromagnetic valve and the peristaltic pump are connected with the electromagnetic valve and the peristaltic pump control unit. The bioreactor disclosed by the invention can effectively realize online control on the pH in the reactor in real time so as to avoid local impact of high-concentration acid-base reagent on microbial activity and promote long-term efficient and stable operation of the reactor.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a bioreactor, in particular to a bioreactor for online automatic pH regulation and a regulation method thereof. Background technique [0002] Biological treatment method has low economic cost and high environmental benefit, which is of great significance for solving environmental problems. For different types of biological reactions, there are various corresponding bioreactors. However, for the biological reactions that produce acid or alkali, the acid-base imbalance in the bioreactor is very easy, which will lead to the inhibition of microbial activity and affect the long-term efficient and stable operation of the bioreactor. Take anaerobic digestion reaction as an example: through anaerobic digestion, waste sludge or other types of organic matter can be converted into methane and other energy gases, reducing pollutants while achieving power generation. It is a bi...

AI Technical Summary

Problems solved by technology

[0003]However, due to the presence of buffer substances in the biological reaction system, the amount of acid-base reagents calculated after pH detection is far from the actual amount required ; There are often problems of overshooting and then callback, and multiple adjustments; among them, for anaerobic biological reaction systems, the corresponding pH regulation is more cumbersome and difficult to implement

Therefore, it is difficult for the conventional pH control system to realize the online control of pH in the biological reaction system.

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