Construction and performance study of biological treatment experimental system for space wastewater
10.16289/j.cnki.1002-0837.2025.01004
- VernacularTitle:空间废水生物处理试验系统的构建与性能研究
- Author:
Liangchang ZHANG
1
;
Haonan FAN
;
Jingsong YANG
;
Ruixin MAO
;
Lin CHEN
;
Yingbin LI
Author Information
1. 中国航天员科研训练中心,北京 100094;人因工程全国重点实验室,北京 100094
- Keywords:
environmental control and life support system(ECLSS);
biological treatment;
water treatment;
membrane aerated biofilm reactor(mabr);
space wastewater
- From:Space Medicine & Medical Engineering
2025;36(1):21-26
- CountryChina
- Language:Chinese
-
Abstract:
Objective To address the bottlenecks in the application of wastewater biological treatment technology under space conditions,an experimental system for the biological treatment of space wastewater was constructed and its biochemical performance examined.The findings of this study will provide technical support for the biological treatment of space wastewater.Methods Based on the Membrane Aerated Biofilm Reactor(MABR)process,a biological treatment experimental system for space wastewater was constructed and conducted the continuous flow test for 77 days to investigate the performance of PVDF and PP membrane modules in the treatment of simulated air condensate.Results The results demonstrated that both membrane modules exhibited an average TOC removal rate of 90%,indicative of their effective organic matter removal capacity.In the air supply mode,the ammonia oxidation capacity was observed to be comparatively lower,whereas in the oxygen source without bubbling mode,the nitrogen oxidation rate and total nitrogen removal rate could be attained above 90%,indicating a notable degree of simultaneous nitrification and denitrification.The results demonstrated that the mode of gas supply had a significant impact on the nitrogen conversion performance.The abundance of nitrogen-converting bacteria in PP membrane module is higher than that in PVDF membrane module,indicating a better nitrogen-converting performance in PP membrane module.Conclusion The constructed wastewater biological treatment system is optimally suited for the treatment of air condensate,thereby offering a novel technical approach for space wastewater treatment.
