Anaerobic external circulation reactor applied to high-concentration organic wastewater treatment

The invention discloses an anaerobic external circulation reactor applied to high-concentration organic wastewater treatment, and relates to the field of organic wastewater treatment devices.The anaerobic external circulation reactor comprises a reactor body and a reflux pump, the reflux pump is arranged outside the reactor body, and a steam-water separation assembly is arranged in the reactor body; the steam-water separation assembly is slidably mounted on the inner wall of the reactor body, and a first sieve plate is fixedly mounted below the steam-water separation assembly in the reactor body. Water in the reactor is pumped into the steam-water separation assembly through the reflux pump, gas in the reactor body is separated and filtered through the separator to form biogas, the biogas is recycled and enters the reactor body, and the steam-water separation assembly utilizes high-pressure gas mist formed after reflux water provided by the reflux pump is mixed with the biogas to form high-pressure gas mist.