Reactor for producing acid phase from urban solid waste through two-phase anaerobic digestion

Abstract

The invention belongs to the field of solid waste treatment devices and discloses a reactor for producing an acid phase from urban solid waste through two-phase anaerobic digestion. The reactor comprises a pretreatment device, a hydrolytic acidification region and a methanogenesis region which are distributed from top to bottom, wherein a crusher and a heating device are arranged in the pretreatment device, and a feeding channel is arranged in the pretreatment device and is connected with the hydrolytic acidification region; a rotatable semi-closed roller reactor and a heating device are arranged in the hydrolytic acidification region, and a multi-layer push type spiral stirrer is arranged in the roller reactor; the hydrolytic acidification region and the methanogenesis region are separated through a partition board and are communicated through a flow guide pipe; a heating device is arranged in the methanogenesis region. The reactor is of an integrated design, is integrated with functions of pretreatment, reaction fermentation, temperature control and air collection and is multifunctional equipment, the loss in a material transfer process can be reduced, and each space is effectively utilized.

Description

technical field [0001] The invention belongs to the field of solid waste treatment devices, in particular to a two-phase anaerobic digestion phase reactor for acid production of urban solid waste. Background technique [0002] Urban solid waste refers to the waste generated with the development of national industrial production and the improvement of people's living quality, especially the sludge, garden waste, kitchen waste and other biomass waste in urban solid waste, which has become the main urban solid waste. . This kind of garbage not only occupies a lot of land resources, but also pollutes the air, land, and water sources, affecting people's normal work and life, and at the same time endangering people's health. If this kind of garbage comes into contact with crops and poultry, it will easily lead to the spread of diseases. In order to realize the sustainable development of resources, it is necessary to realize resource utilization of such wastes. [0003] Anaerobic...

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Problems solved by technology

[0006] The design of an acid-producing phase reactor suitable for two-phase anaerobic digestion of urban solid waste needs to solve many problems such as material mixing, temperature control, anti-corrosion, and life extension. At present, there are few reactors for this stage in China, and there are only a few Small experimental devices mainly rely on imports, which are expensive

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