Degassing device and method for hydrogen sulfide gas in drainage pipe network

Abstract

The invention provides a degassing device for hydrogen sulfide gas in drainage pipe network. The degassing device comprises supporting feet, side plates, cross rods and impellers, wherein the side plates are arranged on the supporting feet, the cross rods are arranged on the side plates, and the impellers are arranged on the cross rods; and each impeller 4 is made of an iron-carbon filler. The invention further provides a degassing method for the hydrogen sulfide gas in the drainage pipe network. The method uses the degassing device for the hydrogen sulfide gas in the drainage pipe network. According to the degassing device and method for the hydrogen sulfide gas in the drainage pipe network, a water body is subjected to reoxygenation by utilizing the impellers, so that the removal of hydrogen sulfide in the water body is facilitated, the hydrogen sulfide is further removed by utilizing iron ions released by the iron-carbon filler, the hydrogen sulfide gas in a drainage pipeline is removed from the source, and therefore the personal safety of workers is guaranteed, and the potential safety hazard of pipeline explosion is eliminated; and lifting parts are used for the descending andascending processes, so that the position of equipment in the drainage pipe network is controlled, the purpose that the workers do not need to go down to a well can be achieved, and therefore the application cost of the gas removal equipment for the hydrogen sulfide in the drainage pipeline is greatly lowered.

Description

technical field

[0001] The invention belongs to the field of water treatment equipment and relates to the treatment of harmful gas in a drainage pipe network, in particular to a hydrogen sulfide gas degassing device and method for a drainage pipe network. Background technique

[0002] Urban drainage pipe network is an important part of urban infrastructure, and its stable operation plays a very important role in the life of residents and the environment of the city. However, in recent years, there have been more and more problems about sewage pipes, and the most discussed is the impact of harmful gases in sewage pipes. Due to the long residence time of sewage in the pipeline, it is easy to form an anaerobic environment in the sediment, and some anaerobic microorganisms will produce a large amount of toxic and harmful gases in the drainage pipe network.

[0003] The sulfate content in urban sewage is 40-200mg / l, and it is easily reduced by sulfate-reducing bacteria in the pi...

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