Biological fluidized bed reactor for raising mixed gas and liquid

Abstract

This invention discloses a gas-liquid lifting biological fluidized bed reactor. The gas-liquid lifting biological fluidized bed reactor comprises a reactor main body. The reactor main body comprises a water distributor, a biological filler layer, a microporous aeration ring, a reactor partition plate, a reverse flow baffle, a biological carrier, a ladder reverse flow port, a middle water inlet, a sampling port, a precipitation zone water inlet pipe, and a precipitation zone reverse flow pipe. The precipitation zone water inlet pipe and the precipitation zone reverse flow pipe are connected with the precipitation pipe. A gas exhaustion port is set at the top of the reactor main body. The upper water outlet of the precipitation pipe is connected with the reverse flow water tank, the reverse flow water pump, the reverse flow water valve, a reverse flow meter, and the ladder reverse flow port. The gas exhaustion port is connected with the gas collection tank, the second gas pump, and the ladder reverse flow port. The microporous aeration ring is connected with the gas rotameter, the gas inlet valve, and the first gas pump. The top water distributor is connected with the top water inlet flow meter, the top water inlet valve, the water inlet pump, and the water inlet tank. The gas-liquid lifting biological fluidized bed reactor is suitable for high-efficiency biological treatment of high-ammonia nitrogen wastewater, and has such advantages as high denitrogenation efficiency and low energy consumption.

Description

technical field [0001] The invention relates to a gas-liquid mixed lifting biological fluidized bed reactor, which is suitable for high-efficiency biological treatment of high-ammonia-nitrogen sewage, can realize high-efficiency denitrification, and save energy at the same time. Background technique [0002] In the early 1970s, the aggravation of the energy crisis worldwide and the increasingly prominent global environmental problems, as well as the intercrossing of disciplines promoted the continuous deepening of research on biological treatment technology. There have been breakthroughs in the theory and application technology of wastewater biological treatment. From the perspective of the way microorganisms grow in the reactor, wastewater bioreactors are divided into two basic types: the first is the attached growth reactor. The microorganisms of this type of reactor grow in the form of a biofilm on a solid support, and its disadvantages are that the filler is expensive, ...

AI Technical Summary

Problems solved by technology

The biological oxidation desulfurization process developed in recent years mostly uses colorless sulfur bacteria or photosynthetic sulfur bacteria to remove sulfide, but its practical engineering application is limited due to the low load and the difficulty of separating elemental sulfur cobalt attached to the cell surface.

The most commonly used method for biological denitrification is the A / O or A2 / O2 process. The process and operation are relatively complicated, and it is often necessary to add additional organic matter such as methanol for heterotrophic denitrification, which will undoubtedly greatly increase the project operating cost.

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