Rotating packed bed for treating ammonia-nitrogen wastewater

Abstract

The invention discloses a rotating packed bed for treating ammonia-nitrogen wastewater, belongs to the technical field of wastewater treatment, and aims to provide therotating packed bed for treatingammonia-nitrogen wastewater. The rotating packed bed comprises a shell, wherein a gas inlet is formed in one side of the shell; a gas outlet is formed in the top of the shell; a liquid inlet and a liquid outlet are respectively formed in the bottom of the shell; an annular packing support frame is arranged in the shell; packing is arranged in the packing support frame; a tubular liquid distributoris arranged in the center of the packing support frame; a plurality of nozzles are arranged ina connecting pipe of the tubular liquid distributor; the center of the top of the packing support frame is connected with a driving device through a rotating shaft; a gas distributor is arranged at the gas inlet; and a plurality of liquid redistributors are arranged on the side wall, parallel to the rotating shaft, of the shell. According to the invention, ammonia nitrogen in the ammonia nitrogen wastewater can be controlled at a certain concentration, so that the ammonia nitrogen wastewater is discharged after reaching the standard.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a rotating packed bed for treating ammonia nitrogen waste water. Background technique [0002] Ammonia nitrogen is ubiquitous in the wastewater discharged from the coal chemical industry and high-tech industries. If it is discharged into rivers and lakes, it will cause eutrophication of the water body and cause a large number of algae and microorganisms in the water to multiply. Therefore, the governments of various countries have formulated strict discharge standards for the discharge of ammonia nitrogen in wastewater. High-concentration ammonia-nitrogen wastewater can be considered to recover ammonia or directly use photochemical equipment, electrochemical equipment, or photoelectric combination equipment to degrade it, but compared with the stripping method, the cost is relatively high and the implementation is difficult. [0003] In order to solve t...

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Problems solved by technology

Although the above-mentioned patents enable the gas to be redistributed and remixed, there are problems such as the complex structure of the gas distributor and the difficulty in process realization.

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