Vacuum sewage-biodegradation dirt tank device for train and sewage disposal method

Abstract

The invention relates to a vacuum sewage-biodegradation dirt tank device for a train and a sewage disposal method. The device comprises a dirt tank and a control system, wherein a biological predisposal chamber and an advanced oxidation chamber which are communicated with each other are formed in the dirt tank, the biological predisposal chamber is used for conducting preliminary degradation on dirt and controlling the pollutant index within a primary standard range, and the advanced oxidation chamber is used for thoroughly oxidizing and decomposing pollutants in the predisposed water and controlling the pollutant index within a discharge standard range during direct discharging of sewage to a track. According to the device and the method, online disposal of the sewage and dirt is achieved, the disposed water meets the direct discharge standard and is directly discharged to the track during running of the train, solids are periodically cleaned away by a station, the dirt removal operation cycle of the station can be prolonged, and the maximum disposal capacity can be exerted in a limited space.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a vacuum sewage biodegradation dirt tank device for trains and a sewage treatment method. Background technique [0002] At present, the toilet sewage of high-speed rail and EMU trains is collected into the dirt tank under the car through the vacuum feces collection system. Since the dirt tank only collects and does not discharge waste water during train operation, the dirt tank often overflows during the peak period of passenger transport, resulting in the suspension of the use of the vacuum toilet, which brings inconvenience to passengers. The waste water in the dirt tank must be pumped by the ground staff every day. After the waste water is pretreated in the septic tank, it enters the municipal pipe network and is uniformly treated and discharged by the sewage treatment plant. It not only consumes a lot of manpower and material resources, but also has a poor working e...

AI Technical Summary

Problems solved by technology

It not only consumes a lot of manpower and material resources, but also has a poor working environment, which will adversely affect the health of workers

[0003] Most of the existing on-line sewage treatment devices can be realized in theory, but in fact, the concentration of train sewage pollutants is high, and the content of COD, ammonia nitrogen, and suspended solids is high. Although the B / C ratio is about 0.5 (good biodegradability), but The nutrient ratio of C:N:P is seriously unbalanced, and the strains and fillers used in conventional anaerobic and aerobic biochemical treatments are inhibited under such harsh conditions, making it difficult to carry out normal life activities, or even survive. And the treatment capacity is quite limited, which cannot meet the secondary standard in GB18918-2002 "Pollutant Discharge Standards for Urban Sewage Treatment Plants"

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