Spatial life support system urine wastewater treatment device and method

Abstract

The invention relates to a spatial life support system urine wastewater treatment device and a spatial life support system urine wastewater treatment method, and belongs to the technical field of water treatment. The urine in the device is diluted by over 10 times and then delivered to a nitration reactor, meanwhile an air supply device supplies oxygen to the nitration reactor, the wastewater treated by the microbes in the nitration reactor is drained to a nitric nitrogen wastewater withdrawer, a part of the treated wastewater is recycled, the other part of the treated wastewater is deliveredto a denitrification reactor, and the wastewater further treated by the microbes in the denitrification reactor is delivered to a reverse osmosis device and treated to obtain treated water; a mixing device for mixing the microbes and the wastewater and a pH, dissolved oxygen and temperature sensor for detecting the reaction conditions in the reaction are arranged in the nitration reactor and the denitrification reactor respectively; and the reaction conditions are controlled through an exhaust valve, a gas flow meter, a pump, an automatic control valve, a heating sleeve and an acid and alkaliadder. According to the device and the method, the energy consumption is low and the concentration of the treated urine wastewater is high because only oxygen is supplied, nitrogen can be reclaimed, the treatment period is short, the safety is high, and the effect is good.

Description

technical field [0001] The invention relates to a device and method for treating urine wastewater in a space life support system, and belongs to the technical field of water treatment. Background technique [0002] In the treatment of space wastewater, because the content of organic acids, urea and salt in urine wastewater is very high, accounting for about 5%, and urea is a non-ionic pollutant that is easily decomposed during the treatment process, urine wastewater treatment is very important. The most difficult to deal with. At present, the methods of treating urine wastewater in countries around the world are mainly physical and chemical methods, mainly including vapor compression distillation, thermoelectric integrated membrane evaporation and advanced oxidation. [0003] Vapor Compression Distillation (Vapor Compression Distillation, VCD), the method is realized by a vapor compression distillation device, the device includes two parts of evaporation and condensation, t...

AI Technical Summary

Problems solved by technology

The disadvantages of the vapor compression distillation method and its devices are: the vapor compression distillation device used has many moving parts, and the reliability needs to be improved

The disadvantages of the thermoelectric integrated film evaporation method and its devices are: the quality of the effluent is poor, and most of the latent heat is lost, and the energy consumption is high.

The disadvantages of the gas-phase catalytic ammonia removal method are: large oxygen consumption and large heat dissipation

The defects of supercritical water oxidation method and its equipment

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