A combined fluidized bed reactor

Abstract

The invention discloses a combined type fluidized bed reactor. The reactor is provided with a combined type tank body in a concentric circle structure of which the inner circle is an anaerobic zone and the outer circle is an aerobic zone, and the aerobic zone is divided into a first subzone, a second subzone, a third subzone and a fourth subzone by 4 partition plates, wherein water passing holes are formed in the lower part of the partition plate between the first subzone and the second subzone, water passing holes are formed in the upper part of the partition plate between the second subzone and the third subzone, water passing holes are formed in the lower part of the partition plate between the third subzone and the fourth subzone, and no water passing holes are formed in the partition plate between the fourth subzone and the first subzone; an air delivery pipe is arranged at the upper part of the aerobic zone and connected aerator pipes arranged at the lower part of the aerobic zone, the aerator pipes are perforated in a staggered and obliquely downward manner, and a punched baffle plate is arranged in the middle part of the aerobic zone and carries high-efficiency aerobic filling; and the anaerobic zone comprises a punched baffle plate, anaerobic filling, water passing holes at the upper part of the anaerobic zone corresponding to the first subzone, a water inlet pipe, a return pipe and a water distributor pipe, wherein branch pipes of the water distributor pipe are perforated in a staggered and obliquely downward manner.

Description

technical field [0001] The invention relates to a fluidized bed reactor, in particular to a combined fluidized bed reactor. Background technique [0002] Anaerobic / aerobic reactors are widely used in the treatment of high-concentration organic wastewater or refractory organic wastewater. Through the action of anaerobic microorganisms, on the one hand, the non-dissolved organic matter in the sewage is intercepted, and it is gradually transformed into dissolved organic matter; The biodegradability of wastewater; aerobic microorganisms can make full use of the organic matter after anaerobic treatment, so that the pollutants can be completely degraded. For high-concentration organic wastewater or refractory organic wastewater, anaerobic / aerobic combined treatment can effectively improve treatment efficiency and reduce wastewater treatment costs. [0003] At present, the anaerobic \ aerobic hydrolysis reactors that are widely used in engineering mainly include two types: one is...

AI Technical Summary

Problems solved by technology

For example, Zhang et al. of Chongqing University researched and developed an anaerobic / aerobic integrated MBR. The lower part of the reactor is an anaerobic zone, which is inoculated with anaerobic granular sludge to complete most of the COD degradation; the upper part of the reactor is an aerobic zone with built-in Membrane main parts and aeration devices, however, biofilms have disadvantages such as easy clogging and difficult cleaning, and the shape of the upper and lower structures also makes construction difficult and limits processing capacity

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