Two-stage anaerobic reactor and method suitable for blue-green algae fermentation

Abstract

The invention relates to a two-stage anaerobic reactor and method suitable for blue-green algae fermentation. The anaerobic reactor (2) is of a double-layer sleeve-type sealing structure, and comprises a first-stage reaction chamber (I) and a second-stage reaction chamber (II), wherein the first-stage reaction chamber (I) is arranged in the center of the anaerobic reactor (2) and is in a sealed cylindrical shape so as to form an inner chamber; the second-stage reaction chamber (II) is wound outside the first stage reaction chamber (I) and is in a sealed cylindrical shape so as to form an outer chamber; and the second-stage reaction chamber (II) is communicated with the first-stage reaction chamber (I) by virtue of a water outlet (21) arranged at the upper part of the first-stage reaction chamber (I). A solid-liquid separation component is arranged at the upper part of the first-stage reaction chamber, so that a sludge-water separation area is formed; the solid retention time is prolonged, the digestion effect is improved, and the enough sludge concentration in the reaction chambers can be guaranteed; the first-stage reaction chamber is internally provided with an intermittent stirring device; and the second-stage reaction chamber is provided with an elastic filler, so that microorganism enrichment is enhanced, and the specific surface area of reaction is increased.

Description

technical field [0001] The invention relates to an anaerobic reactor suitable for anaerobic fermentation treatment of cyanobacteria, belonging to the technical field of environmental engineering. Background technique [0002] In recent years, the eutrophication of the water body in the Taihu Lake Basin has been very serious, resulting in frequent outbreaks of cyanobacteria blooms and deteriorating water quality. At present, effective methods of algae removal are being actively explored. Chemical algae removal is only at the stage of experimental research, and biological ecological restoration methods for algae control are only locally applied in a small area. methods to remove algae from lakes and reduce the amount of algae in the water, thereby mitigating the dangers of cyanobacterial blooms. The concentration of salvaged blue-green algae has a high concentration of organic matter and solid content. Treating it with anaerobic process can not only reduce its volume, but als...

AI Technical Summary

Problems solved by technology

However, the currently developed high-efficiency anaerobic reactors, such as upflow anaerobic sludge bed (UASB), internal circulation reactor (IC), expanded granular bed (EGSB), etc., can all be applied to high organic matter concentration and low solid content. waste water treatment, not suitable for anaerobic treatment of algae-rich water or algae slurry with high solid content

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