Acclimation Study of Aerobic Process for Ersatz Urine Wastewater Microbial Treatment
Zhang Liangchang
Ai Weidang
Li Ting
Yu Qingni
Ji Yunjie
Abstract：Objective To develop an eco-friendly and resource recyclable microbial method for the treatment of urine wastewater generated in the manned space mission,and explore the law of element transformation in the urine aerobic process.Methods A sequencing batch reactor (SBR) was designed to cultivate the aerobic microorganism for the urine wastewater treatment system,and the transform of nitrogen and the degradation of organic carbon (TOC) was studied.Results 86 d of acclimation operation showed that the performance of TOC degradation,ammonification and nitrification reached the highest level on the 23th d and the aerobic system could quickly recover from short-term fault of oxygen providing.The TOC degradation process during normal operation was within 3 h with stable effluent concentration (below 10 mg/L),while the ammonification and nitrification process lasted for 9 h.The average TOC,ammonification and nitrification removal ratios of the system were 97.3％,96.5％ and 59.8％ respectively.Conclusion The developed aerobic system could be rapidly acclimatized to the 1∶10 strength urine wastewater treatment.It provides a reference for the design of the aerobic process unit in the urine wastewater microbial treatment system.
Keywords：urinemicroorganismaerobicnitrification
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 369-373 )