Key Laboratory of Industrial Ecology and Environmental Engineering (China Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Key Laboratory of Industrial Ecology and Environmental Engineering (China Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Bioresour Technol. 2017 Oct;241:181-189. doi: 10.1016/j.biortech.2017.02.125. Epub 2017 Feb 28.
Treatment of sludge digester liquor was successfully accomplished using a pilot-scale partial nitrification-anammox (PN/A) reactor with a nitrogen removal rate (NRR) of 1.23kgN/m/d. A stable and efficient PN process was attained by controlling the concentration of free ammonia (0.7-8.4mg/L) and free nitrous acid (0.02-1.0mg/L). The application of hydroxylamine played a vital role in the reactivation of anammox bacteria. The bacteria exhibited improved granule properties at a specific input power between 0.065 and 0.097kW/m, and achieved a specific anammox activity (SAA) of 1.01kgN/kgVSS/d on day 148. From day 0 to 120, the heme c content in the granules increased from 0.42±0.1 to 5.77±1.0µmol/gVSS, with a corresponding increase in NRRs and SAAs. High-throughput sequencing techniques revealed that the dominant anammox bacterial genus was Candidatus Brocadia. These conclusions provide valuable information for the full-scale treatment of sludge digester liquor.
采用中试规模的部分硝化-厌氧氨氧化（PN/A）反应器成功处理了污泥消化液，其脱氮速率（NRR）为 1.23kgN/m/d。通过控制游离氨（0.7-8.4mg/L）和游离亚硝态氮（0.02-1.0mg/L）的浓度，实现了稳定、高效的 PN 工艺。羟胺的应用对厌氧氨氧化菌的再激活起到了至关重要的作用。细菌在特定输入功率为 0.065-0.097kW/m 时表现出更好的颗粒性质，并在第 148 天达到了 1.01kgN/kgVSS/d 的特定厌氧氨氧化活性（SAA）。从第 0 天到第 120 天，颗粒中血红素 c 的含量从 0.42±0.1 增加到 5.77±1.0µmol/gVSS，同时 NRR 和 SAA 也相应增加。高通量测序技术表明，优势厌氧氨氧化菌属为布鲁卡氏菌属（Candidatus Brocadia）。这些结论为污泥消化液的大规模处理提供了有价值的信息。
