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

A high-speed railway, centralized treatment technology, applied in biological water/sewage treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc. , technically reliable methods, etc., to achieve the effect of simultaneous short-range nitrification and denitrification and denitrification, and to improve biodegradability

Active Publication Date: 2017-04-26
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the separate treatment process is complicated, the operating condition is poor, the concentration of ammonia nitrogen in the effluent is high, and the discharge can not be achieved.
Summarize and analyze the current status of high-speed rail toilet sewage treatment, and there is still a lack of economically feasible and technically reliable methods for direct treatment of toilet sewage

Method used

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

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Effect test

Embodiment 1

[0031] Embodiment 1: as figure 1 As shown, a kind of high-speed railway passenger car lavatory centralized sewage treatment system provided by the present invention mainly consists of a rotating drum grille, a pretreatment adjustment tank, an internal circulation micro-aerobic reactor, an internal circulation anaerobic reactor, and a double-circulation aerobic reaction device, special denitrification aeration filter, disinfection facilities, sludge treatment device, automatic control system and various pipelines, valves, pumps, etc.

[0032] A centralized sewage treatment system for high-speed railway passenger car toilet collectors. The sewage from the toilet collectors enters the rotating drum grille 1, and the back of the rotating drum grille 1 is connected to the pretreatment adjustment pool 2. The pretreatment adjustment pool 2 is connected to the internal circulation micro-oxygen reactor 3 and the internal The circulation anaerobic reactor 4 is connected, the internal ci...

Embodiment 2

[0035] Embodiment 2: as figure 1 As shown, the high-speed railway passenger car lavatory sewage centralized treatment system and method of the present invention, the rotating drum grille is used to remove toilet paper, large pieces of feces, etc. in the lavatory sewage;

[0036]Since the water quality and volume of high-speed rail passenger car toilet sewage vary greatly, and the content of suspended solids, ammonia nitrogen and phosphorus in the water is high, in order to ensure the stability of the subsequent treatment process, a pretreatment adjustment tank with bleaching powder is set up to effectively remove part of the ammonia nitrogen in the sewage , phosphorus and suspended solids, and ensure the stability of sewage water quality and water quantity;

[0037] The settings of internal circulation microaerobic reactor, internal circulation anaerobic reactor and double circulation aerobic reactor can efficiently remove nitrogen and improve the biodegradability of sewage; ...

Embodiment 3

[0043] Embodiment 3: as figure 1 Shown, a kind of high-speed railway passenger car lavatory sewage centralized treatment method comprises the following steps;

[0044] Step 1. The sewage from the toilet collector of the high-speed railway passenger car first passes through the rotating drum grille 1 to remove toilet paper, large pieces of feces, etc. in the sewage from the toilet collector;

[0045] Step 2, then enter the pretreatment adjustment tank 2, remove part of the ammonia nitrogen and suspended solids in the sewage, and adjust the water quality and water quantity;

[0046] Step 3, the effluent from the pretreatment adjustment tank 2 enters the internal circulation microaerobic reactor 3 and the internal circulation anaerobic reactor 4 respectively; the effluent from the internal circulation microaerobic reactor 3 enters the internal circulation anaerobic reactor 4; the internal circulation microaerobic reaction Reactor 3 realizes short-range nitrification through gran...

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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. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/76C02F3/005C02F3/302C02F9/00C02F2301/08
Inventor 李德生
Owner BEIJING JIAOTONG UNIV
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