Device and process for reinforcing zero-valent iron to degrade kitchen waste based on dynamic magnetic field

Abstract

The invention discloses a device and process for reinforcing zero-valent iron to degrade kitchen waste based on a dynamic magnetic field. The process comprises the following steps that the kitchen waste is crushed, the crushed kitchen waste is put into an anaerobic reactor inoculated with introduction sludge, the zero-valent iron is added into the reactor according to the adding amount of 10g / L, a dynamic magnetic field device below the anaerobic reactor is started, the dynamic magnetic field is composed of a rotary shaking table and a strong magnet. According to the device and process for the reinforcing zero-valent iron to degrade the kitchen waste based on the dynamic magnetic field, direct interspecific electron transfer of microorganisms in the anaerobic reactor is promoted by utilizing a conductor and an induced electric field generated by the conductor capable of cutting magnetic induction lines, and meanwhile, a weak magnetic field can accelerate dissolution of the zero-valent iron, promote activity of anaerobic microorganisms and change a microbial community structure, so that methanogens are enriched; and the process of degrading the kitchen waste to produce methane by the anaerobic reactor is enhanced. According to the device for the reinforcing zero-valent iron to degrade the kitchen waste based on the dynamic magnetic field, the problems that the anaerobic reactor for treating the kitchen waste is easy to acidify and the methane production efficiency is low can be solved.

Description

technical field [0001] The invention relates to a kitchen waste treatment device and process. Background technique [0002] With the rapid development of my country's social economy and the improvement of people's living standards, the amount of kitchen waste is increasing day by day. A large amount of kitchen waste not only causes huge waste, but also brings serious environmental pollution. Food waste is high-solid organic solid waste, which usually has the characteristics of high moisture content, high proportion of organic matter, and high salt content. Most food waste is in a viscous state of solid-liquid mixture and its composition is relatively complex. Due to the high moisture content of food waste, it is easy to be corrupted, and it is easy to breed bacteria, pathogens and molds. Therefore, if it is not cleaned up in time, it will produce toxic and harmful substances and foul odors, pollute the atmosphere, water, and soil, and endanger human health. In severe cases ...

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Problems solved by technology

[0004] In order to solve the problems that the anaerobic fermentation cycle in the anaerobic digestion system of food waste is long, the mass transfer efficiency is low, and volatile organic acids are easy to accumulate, thereby inhibiting the process of methane production, the present invention proposes the following technical solutions: a dynamic magnetic field based The device for strengthening zero-valent iron filings to degrade food waste is characterized in that: a cover plate is provided above the anaerobic reactor with a water bath constant temperature layer

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