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论文类型：期刊论文

发表时间：2022-06-30

发表刊物：现代化工

卷号：31

期号：7

页面范围：75-78,80

ISSN号：0253-4320

摘要：A new hybrid reactor combined the advantages of fluidized bed with fluidization achieved by internal recirculation and fixed bed using nonwoven fabrics as biomass carrier is developed. Its potential nitrogen removal property is evaluated. The results show that, the hybrid reactor can operate stably for about 270 days. The total nitrogen removal rate and nitrite removal rate are around 80% and above 90%, respectively. The maximum nitrogen loading rate reaches 15.2 kg/m3��d-1 with corresponding nitrogen removal rate of 9.9 kg/m3��d-1. The specific anammox activity of 0.3 kg/kg��d-1 is calculated as the result of batch test. Better microbial retention capability and sludge characteristics are also proved by low concentration of effluent suspended solids, granule size distribution assay and SEM observation. FISH analysis reveals an anammox bacterium content over 70%.

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