A hydrogen-producing methane reactor for treating solid waste

Abstract

The invention belongs to the technical field of solid waste anaerobic treatment, in particular to a hydrogen-producing methane reactor for treating solid waste. The reactor includes a tank body (15), a hydrogen production reaction zone (2), a separation device (5), a methanation reaction zone (6) and a three-phase separator (8). The reactor has mutually independent reaction zones, so that a hydraulic retention time difference is formed between the hydrogen-producing and methane-producing reaction zones inside the reactor. After the sludge in the solid mixture after hydrogen production is separated, it is mixed with the effluent of the integrated reactor, and after aeration or heat treatment, it is evenly sprayed on the upper part of the hydrogen production reaction zone (2) to ensure that the hydrogen production reaction zone (2), and can promote the mass transfer of hydrogen-producing fermentation. The sludge inoculated in the methanogenic reaction zone (6) and the three-phase separator (8) form a granular sludge bed, thereby efficiently transforming liquid-phase products formed in the hydrogen production process.

Description

technical field [0001] The invention belongs to the technical field of solid waste anaerobic treatment, in particular to a hydrogen-producing methane reactor for treating solid waste. Background technique [0002] my country produces a large amount of solid waste every year, including crop straw, livestock and poultry manure, and kitchen waste. Anaerobic fermentation technology can also obtain gas energy while processing solid waste. Compared with the common methane fermentation, the two-stage anaerobic fermentation to produce hydrogen and methane can convert solid waste pollutants into a cleaner mixture of hydrogen and methane, while improving fermentation efficiency and organic load bearing capacity. [0003] Chinese patent CN 205223250U discloses an anaerobic digestion device for two-phase treatment of kitchen waste. The hydrolysis zone and the methane production zone are both mixed by a mixing agitator. [0004] Chinese patent CN104911216 A discloses an integrated syst...

AI Technical Summary

Problems solved by technology

[0008] Judging from the existing technologies and processes, the anaerobic hydrogen and methane fermentation of solid waste is mainly carried out through two separate reaction systems, so that the operation is cumbersome

In addition, the reactor used is a conventional fully mixed reactor, and the concentration of microorganisms in the reactor is low, resulting in low reaction efficiency and long reaction cycle

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