Optimization design method of anaerobic continuous flow agitator bath type biological hydrogen production reactor

Abstract

The invention belongs to the field of environment protection, and in particular relates to an optimization design method of an anaerobic continuous flow agitator bath type biological hydrogen production reactor. The method comprises the following steps: researching reactor internal flow field characteristics of different types of stirring paddles under the conditions of different paddle-bath diameter ratios and different agitating speeds and influence on hydrogen production process, by using a numerical simulation software based on computational fluid mechanics technology; obtaining detailed flow field information, such as velocity field, turbulence energy and dissipation rate thereof, biogas integration rate and shearing rate distribution by adopting a two-phase flow model, and analyzing and comparing different flow field information obtained through simulation according to influence on hydrogen production process by the various flow field information, thereby determining an optimal stirring paddle style and agitating speed combination, and providing an effective method for the optimization design of the agitator bath reactor. The optimization design method of the anaerobic continuous flow agitator bath biological hydrogen production reactor is mature in technology, avoids the blindness of hydraulic design of the reactor using an empirical or semiempirical association method, and has the advantages of being visual in optimization cycle effect and short in optimization cycle, saving cost, and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to an optimal design method of an anaerobic continuous flow stirred tank type biological hydrogen production reactor. Background technique [0002] The anaerobic continuous flow stirred tank biological hydrogen production reactor is a complex physical, chemical and biological multi-reaction system that uses anaerobic activated sludge to treat wastewater and generate hydrogen. Many biochemical reactions occur in the gas, liquid and solid three-phase system. reaction. Therefore, the study of this anaerobic reactor is necessary to describe its internal microbiological, chemical and physical characteristics. Among them, the flow field in the reactor also has a great influence on the history and process of the biochemical reaction. The hydraulic retention time and circulation flow directly affect the process results such as substrate conversion rate and p...

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Problems solved by technology

[0004] In China, there are few studies on the flow field mechanism of wastewater treatment reactors. In actual design, the design is often based on experience. In the design, there are often limited parameter data or the actual data cannot be obtained, which makes the design of the reactor blind to a certain extent. , it is difficult to optimize the choice of

In many cases, the design, scale-up, and operation of wastewater bioreactors rely more on experience than science, and the results obtained by using some ideal and empirical correlations are difficult to reflect the influence of the actual flow field on the reaction. It is economically and time-infeasibly practical to compare

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