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Spatial life support system urine wastewater treatment device and method

A technology for wastewater treatment and urine, applied in the field of water treatment, can solve the problems of easy clogging of the reactor, low maximum mass concentration, easy corrosion of equipment, etc.

Inactive Publication Date: 2011-07-27
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 are: poor safety, easy corrosion of equipment, easy blockage of reactor, high energy consumption and large oxygen consumption
However, the urease bioreactor has the following disadvantages: since the activity of urease is limited by iodine concentration, pH value and temperature, it is necessary to adjust the pH value of the urine wastewater, remove iodine and desalt and other pretreatments. In addition, The maximum mass concentration of urea that can be tolerated by the urease bioreactor is as low as 120-310 μg / L, so high-fold dilution of the urine wastewater to be treated is required

Method used

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  • Spatial life support system urine wastewater treatment device and method
  • Spatial life support system urine wastewater treatment device and method

Examples

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Embodiment Construction

[0054] In order to fully illustrate the characteristics of the present invention and the mode of carrying out the present invention, examples are given below.

[0055] In this embodiment, the air supply device 4 is an air pump, the pump 12 is a peristaltic pump, the automatic control valve A 13 is a solenoid valve A, the automatic control valve B 22 is a solenoid valve B, and the aeration device 16 is a microporous aeration head , the mixing device A 17 is the agitator A, and the mixing device B 25 is the agitator B.

[0056] A space life support system urine waste water treatment device, such as figure 1As shown, the device includes a reaction system, an analysis detection system and a process control system; wherein, the reaction system includes a nitrification reactor 1, a denitrification reactor 2, a urine storage tank 3, an air supply device 4, and nitrate nitrogen wastewater recovery device 5 and reverse osmosis device 6; the analysis and detection system is composed of...

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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...

Claims

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Application Information

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IPC IPC(8): C02F9/14C12N1/20C02F3/12C02F3/28
CPCY02W10/10
Inventor 高海军黄旭权朱彩云童延斌
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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