High-efficiency biological fluidized bed reactor

Abstract

The invention discloses a high-efficiency biological fluidized bed reactor. The high-efficiency biological fluidized bed reactor comprises a reactor main body, activated sludge cyclone separator is arranged in the reactor main body, a first anoxic zone is arranged in the activated sludge cyclone separator, a second anoxic zone is arranged under the bottom of the reactor main body, an aerobic zoneis arranged above the reactor main body, a first water inlet is arranged at one side of the bottom of the second anoxic zone, a first sludge discharge port is arranged at the other side of the bottomof the second anoxic zone, an aeration main tube is arranged at one side of the bottom of the aerobic zone, and a second water inlet is arranged above the aeration main tube; and a tangential inlet and a tapered liquid receiving disc are arranged at one side of the activated sludge cyclone separator, a second mud discharge port is arranged above the edge of the tapered liquid receiving disc, the inner wall ring of the upper part of an upper column body is provided with an overflow weir, and one side of the overflow weir is communicated with the water outlet. The high-efficiency biological fluidized bed reactor has the advantages of uniformity in material distribution, good liquid-solid mass transfer effect, high integration, small occupied area, low energy loss, strong resistance to organic load impact, short hydraulic retention time and high treatment efficiency.

Description

technical field [0001] The invention relates to a high-efficiency biological fluidized bed reactor, which belongs to the technical field of organic wastewater treatment. Background technique [0002] With the continuous advancement of the industrialization process, the discharge of industrial wastewater is also increasing day by day. Among them, high-concentration refractory organic wastewater mainly from printing and dyeing, papermaking and other industries has always been a difficult problem in the field of wastewater treatment. The COD concentration of this type of wastewater can often reach tens of thousands or even hundreds of thousands mg / L, which can make the water body hypoxic and affect the ecological environment. The harm is huge, and it also brings many hidden dangers to people's daily life health. At present, the more economical and effective treatment methods for high-concentration organic wastewater are biological treatment methods, such as A / O, SBR, oxidation...

AI Technical Summary

Problems solved by technology

Among them, high-concentration refractory organic wastewater mainly from printing and dyeing, papermaking and other industries has always been a problem in the field of wastewater treatment. The COD concentration of this type of wastewater can often reach tens of thousands or even hundreds of thousands mg / L, which can make the water body hypoxic and affect the ecological environment. The harm is huge, and it also brings many hidden dangers to people's daily life health.

At present, the more economical and effective treatment methods for high-concentration organic wastewater are biological treatment methods, such as A / O, SBR, oxidation ditch, etc., but according to actual operating conditions, most of the traditional biological treatment methods have low treatment efficiency and reaction Disadvantages such as large pool volume and high energy consumption

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