Novel vertical anaerobic reactor

Abstract

The invention discloses a novel vertical anaerobic reactor which comprises a tank body, a material circulating stirring assembly arranged in the tank body and a biogas slurry separator, the material circulating stirring assembly comprises a heating reaction pipe, the heating reaction pipe divides a material reaction area in the tank body into a first circulating reaction chamber and a second circulating reaction chamber, and a high-pressure biogas buffer tank on one side of the tank body sprays biogas to the upper part of the heating reaction pipe through a first biogas discharge pipe, so thatmaterials form longitudinal circulation in the tank body, the biogas slurry separator comprises a separator shell, and a drainage sleeve is fixed in the separator shell, meanwhile, a drainage pipe isarranged at the bottom of the drainage sleeve, a circulating pump is further arranged on one side of the tank body and is used for conveying materials in the material reaction area into the separatorshell, and a sludge discharge pipe for conveying sludge into the tank body is also arranged at the bottom of the separator shell. According to the vertical anaerobic reactor, materials in the tank can be fully stirred and mixed, and discharging of biogas residues and backflow of sludge are achieved.

Description

technical field [0001] The invention relates to anaerobic treatment equipment for domestic garbage, more specifically, it relates to a novel vertical anaerobic reactor. Background technique [0002] Kitchen (kitchen waste) waste contains more than 80% of water, and the liquid phase after pretreatment has the characteristics of high COD, high salt, high SS, etc. In the current normal anaerobic reactor operation, including UASB, CSTR, etc., Sludge loss, fatty acid calcium accumulation, and even acidification will occur. At the same time, the gas production efficiency also decreases with time. COD degradation efficiency gradually decreased. This is related to the reduction of sludge load caused by anaerobic sludge loss, and the poor mass transfer effect caused by uneven stirring, and the inert substances, scum, etc. cannot be removed in time to reduce the effective space. [0003] The Chinese patent application publication number CN101823793A discloses an anaerobic reactor, ...

AI Technical Summary

Problems solved by technology

[0004] 1. The material under the anaerobic reactor is easy to settle and cannot go up, and the material above floats on it and cannot come down, which makes the material easy to stratify and cannot meet the requirements of homogenized materials;

[0005] 2. The anaerobic reactor cannot complete the homogeneous mixing of anaerobic sludge and materials, and materials containing light substances are easily enriched at the top of the tank under the action of buoyancy and biogas lift

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