Internal recycle strengthened perfect mixing flow anaerobic reactor

Abstract

The invention provides an internal recycle strengthened perfect mixing flow anaerobic reactor. The reactor is provided with a water distribution area, a perfect mixing area, a first separating area and a second separating area from bottom to top; the water distribution area is provided with a bottom plate, an emptying port, a water inlet pipe, a hollow cone water distributor and an arc baffle plate; the perfect mixing area is provided with a return pipe, rotational flow baffle plates, a lower end lifting pipe and a mud discharge pipe; the first separating area is provided with a three-phase separator, a downflow weir and a water outlet pipe; the second separating area is provided with an upper end lifting pipe, an outer separating cylinder, an inner separating cylinder and an air outlet pipe. According to the reactor provided by the invention, through the arrangement of three rotational flow baffle plates which are arranged in a 120 degree rotation manner and an inner recycle structure, the tangential flow velocity and axial flow velocity in a rotational flow mixing area are respectively increased, so as to achieve the effects of strengthening inter-phase mixing in the rotational flow mixing area and reducing waterpower dead zones, thereby effectively diluting high concentration feeding water, improving volume efficiency of the reactor and guaranteeing the stable running of the reactor.

Description

technical field [0001] The invention relates to an anaerobic bioreactor for organic wastewater treatment, in particular to an internal circulation enhanced fully mixed flow anaerobic reactor. Background technique [0002] At present, my country's water pollution problem is still serious. According to the 2014 "China Environmental Status Bulletin", the total annual discharge of wastewater chemical oxygen demand (COD) is 22.946 million tons, of which, industrial and agricultural sources of COD discharge accounted for 61.61%. , The discharge of these wastewater is not only a great waste of water resources, but also has a bad impact on people's living environment and health. A large part of COD in industrial wastewater comes from high-concentration organic wastewater, and anaerobic reactors, as a sharp tool for the degradation of high-concentration organic wastewater, have attracted much attention in the field of wastewater treatment. [0003] The COD of high-concentration organ...

AI Technical Summary

Problems solved by technology

However, traditional CSTR not only consumes a lot of energy, but also its mixing effect is not ideal. According to literature reports, the hydraulic dead zone of traditional CSTR is as high as 70%.

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