Device for organized gas removal through rain-sewage direct connection system

Abstract

The invention discloses a device for organized gas removal through a rain-sewage direct connection system. An urban sewage pipe network is divided into a plurality of subsystems, and in each subsystem, gas blocking devices are installed at a sewage inlet of an inspection well at the most upstream position and at a sewage outlet of an inspection well at the most downstream position, a drainage vertical pipe of a nearby high-rise building is connected to the inspection well at the most upstream position, and a rainwater vertical pipe of the nearby high-rise building is connected to the inspection well at the most downstream position. In each subsystem, vent holes on well covers of the rest of inspection wells other than the inspection well at the most downstream position are blocked. The gasblocking devices each comprise a plurality of blocking plates installed in the sewage pipes, the multiple blocking plates are arranged in sequence from top to bottom, and each blocking plate can be independently rotated. The device for organized gas removal through the rain-sewage direct connection system can effectively improve the ventilation effect in the sewage pipes, is low in cost and convenient to install and use, and provides a new idea and a practical and effective method for treating harmful gas in the urban sewage pipe network.

Description

technical field [0001] The invention belongs to the technical field of water treatment equipment, and relates to the treatment of harmful gas in a drainage pipe network, in particular to an organized degassing device for a rain-sewage direct connection system. Background technique [0002] The urban drainage pipe network is an important part of urban construction. The traditional design of sewage pipes is simply based on hydraulic conditions and the migration of pollutants, ignoring the biochemical reactions of microorganisms in the pipes and the ventilation of toxic and harmful gases, resulting in The airflow and ventilation in the city is not smooth, and a large amount of toxic and harmful gases accumulate in certain pipe sections in the city, causing explosion hazards and seriously affecting the living environment of nearby residents. In addition, during the maintenance of the drainage pipe network, these factors often lead to corrosion of the pipes and shorten the service...

AI Technical Summary

Problems solved by technology

[0007] Although the above measures are indeed effective in controlling hydrogen sulfide, they have defects of varying degrees.

For example: measures to improve the redox potential: injecting oxygen and adding nitrate nitrogen can control hydrogen sulfide, but also increase the consumption of fatty acids to a certain extent, which has an adverse effect on the downstream denitrification and descaling; Soda lime, the equipment is complicated, and when it is added continuously, the cost is very high; the same is true for the addition of iron salt, which is very effective in controlling hydrogen sulfide in the pipeline, but the continuous addition device is complicated and will increase the cost of harmful gas control

Images