Wastewater centralized treatment system and method for toilet wastewater collectors of high-speed railway passenger cars

Abstract

The invention discloses a wastewater centralized treatment system and method for toilet wastewater collectors of high-speed railway passenger cars, and belongs to the technical field of wastewater treatment. A rotating drum grille is used for removing toilet paper and bulk manure in wastewater of the toilet wastewater collectors; a pretreatment regulation pool is arranged and bleaching powder is added for removing a part of ammonia nitrogen and suspended matters in wastewater, and the water quality and water quantity can be regulated; an internal circulation micro oxygen reactor is arranged for receiving 2 / 3 wastewater of the toilet wastewater collectors, 100 to 150-mesh micro electrolysis catalytic carrier particles are added, and shortcut nitrification can be realized through granular sludge; an internal circulation anaerobic reactor is used for removing a part of ammonia nitrogen and nitrate nitrogen; a double-circulation aerobic reactor is arranged for realizing simultaneous nitrification and nitrogen removal by denitrification of aerobic granular sludge; a special nitrogen removal aerated filter is arranged, and advanced treatment of wastewater is realized by using a micro electrolysis catalytic biological carrier; and then treated water is disinfected through ClO2 to achieve standardized discharge.

Description

technical field

[0001] The invention relates to a system and method for centralized sewage treatment of high-speed railway passenger car toilet pans, belonging to the technical field of sewage treatment. Background technique

[0002] In order to protect the ecological environment along the railway, in the 1970s, most developed countries in the world began to install toilets on trains, avoiding the random discharge of passenger excrement along the railway. facility for processing. In developed countries, the sewage from the toilets is generally discharged into the urban sewage pipe network after simple treatment. After being mixed with the sewage from the urban sewage treatment plant, the sewage from the toilets is treated separately and discharged less. However, with the rapid development of high-speed railways in my country, the amount of sewage collected by the toilet collector is large, and it is not suitable to be directly discharged into the urban sewage pipe network. ...

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