一段式亚硝化厌氧氨氧化SMBBR处理中低浓度氨氮废水

在常温条件下，采用一段式亚硝化厌氧氨氧化SMBBR处理中低氨氮浓度废水.结果表明，在进水氨氮浓度为100 mg·L^-1，溶解氧为0.4~0.7 mg·L^-1条件下，负荷（以N计）为0.16 kg·（m³·d）^-1，去除率可达（51.58±6.80）%，实现了一段式亚硝化厌氧氨氧化的稳定运行.AOB、ANAMMOX和NOB活性分别稳定在（2253.21±502.10）、（4847.46±332.89）和（1455.17±473.83）mg·（m²·d）^-1，AOB和ANAMMOX菌之间形成了良好的协同作用.高通量结果显示，Ca.Brocadia（ANAMMOX）、Nitrosomonas（AOB）和Nitrospira（NOB）占比分别为11.57%、1.01%和0.94%.一段式部分亚硝化厌氧氨氧化工艺的稳定运行为厌氧氨氧化技术处理中低浓度氨氮废水提供了参考.

Treatment of Medium Ammonium Wastewater by Single-stage Partial Nitritation-ANAMMOX SMBBR

A SMBBR was established to treat medium ammonium under room temperature. Results showed that TN load can reach 0.16 kg·(m³·d)^-1, and the average TN removal efficiency was (51.58±6.80)% in the SMBBR with an influent ammonia concentration of 100 mg·L^-1 and DO of 0.4-0.7 mg·L^-1. AOB, ANAMMOX, and NOB activity reached (2253.21±502.10) mg·(m²·d)^-1, (4847.46±332.89) mg·(m²·d)^-1, and (1455.17±473.83) mg·(m²·d)^-1, and ANAMMOX and AOB bacteria were found to develop a good collaborative relationship. Quantitative PCR results showed that the relative abundance of ANAMMOX, AOB and NOB were 11.57%, 1.01% and 0.94%, respectively. The stable operation of single stage partial nitritation-ANAMMOX process provide an alternative technology for medium ammonia wastewater.