Organized degassing device for rain and sewage direct connection system

Abstract

The invention discloses a device for the organized degassing of the rain and sewage direct connection system, which divides the urban sewage pipe network into a plurality of subsystems. Air blocking devices are installed at the sewage outlets of inspection wells, and the drainage risers of nearby high-rise buildings are connected to the most upstream inspection wells, and the rainwater risers of nearby high-rise buildings are connected to the most downstream inspection wells; In the system, the ventilation holes on the manhole covers of the other inspection wells except the most upstream inspection well are blocked; the air blocking device includes a plurality of barrier plates installed in the sewage pipe, and the plurality of barrier plates Arranged sequentially from top to bottom, and each blocking plate can be rotated independently. The device of the invention can effectively improve the ventilation effect in the sewage pipe, has low cost and is easy to install and use, and provides a new idea and a practical and effective method for the treatment of harmful gases 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

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