Nitroaniline (NA) wastewater is known to be highly toxic and biodegradation-resistant. Based on the principles of molecular oxygen supply and biofilm formation, a novel membrane-aerated biofilter (MABF) combining membrane aeration with a biofilter was established for the first time to treat NA wastewater containing the same concentrations of p-nitroaniline (PNA) and o-nitroaniline (ONA). The NA wastewater treatment performance of the MABF was investigated, and the NA biodegradation characteristics were evaluated. When the influent NA concentration was 120 mg/L, the PNA and ONA removal rates reached 100% and 86.56%, respectively. The NA removal loading reached 111.62 g/m³·d, and the total nitrogen (TN) removal rate reached 82.97%. The synergistic effects of the diverse microorganisms in the membrane-aerated and nonaerated zones of the MABF enhanced the removal of NA and nitrogen. This MABF is an economically efficient and environmentally friendly technology for treating wastewater containing toxic and hazardous organic compounds.

硝基苯胺（NA）废水具有高毒性和抗生物降解性。根据分子氧供应和生物膜形成的原理，首次建立了一种新型的膜曝气生物滤池（MABF），将膜曝气与生物滤池结合在一起，以处理含有相同浓度的对硝基苯胺（PNA）和邻硝基苯胺的NA废水。 -硝基苯胺（ONA）。研究了MABF的NA废水处理性能，并评估了NA的生物降解特性。当进水NA浓度为120 mg / L时，PNA和ONA去除率分别达到100％和86.56％。去除NA的负荷达到111.62 g / m ³·d，总氮（TN）去除率达到82.97％。MABF的膜曝气区和非曝气区中各种微生物的协同作用增强了NA和氮的去除。MABF是一种经济高效且环保的技术，用于处理含有毒和有害有机化合物的废水。