Train washing water treatment and reuse method and device

Abstract

The invention discloses a train washing water treatment and reuse method. After large particulate matters in drained water of a washing basin are removed through a mesh filter, the drained water is collected into a water inflow buffer area, returns via the bottom of a baffle, flows into an electrolytic oxidation area in a plug-flow type flow state and flows through internal electrolytic pole plates in the electrolytic oxidation area in a plug flow state of returning back and forth, and washing water is purified via single action or multiple collaborative actions of electrolytic oxidation, electrolytic floatation and electrolytic flocculation; the water subjected to electrolytic purification overflows to a produced water collection area from the upper portion of another baffle, and water in the produced water collection area is pumped into a flushing water pressurizing tank in real time via a reuse water pump for flushing. Meanwhile, the invention further discloses a device of the method. By the method and the device, water is saved by more than 50%, load of an on-board water tank can be reduced effectively, frequency that a train stops at a station for water supplementation is reduced, and contradiction of water supply and water consumption of the train is solved.

Description

technical field [0001] The invention relates to a method and a device for purifying and reusing gray water, in particular to a method and a device for using the treated washing water of passenger trains as toilet flushing water for train vacuum toilets. Background technique [0002] At present, foreign scholars such as Robert E Eden have proposed that on long-distance travel trains, the washing water used by passengers only accounts for about 0.1% of the pollution impurities, which is less than 3.5% of seawater, and can be reused after proper treatment. [0003] For a long time, according to the situation of the drainage system of each passenger train in our country, the old habit of one-time use and direct discharge to the track is continued, or the waste at the bottom of the car is sucked by the vacuum pipeline through the gray water collection box. Dirt box. The above discharge method of washing water, on the one hand, the washing water of passengers is directly discharg...

AI Technical Summary

Problems solved by technology

The above discharge method of washing water, on the one hand, the washing water of passengers is directly discharged, while the toilet flushing water is directly supplied with clean water from the water tank, resulting in waste of water resources and exacerbating the already tense situation of water use on the train; on the other hand, if the washing water is vacuum collected To the fecal dirt tank, it increases the volume load of the train dirt tank

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