Abstract Partial nitritation and anaerobic ammonium oxidation (PNA) is a useful process for the treatment of nitrogen-rich centrate from the dewatering of anaerobically digested sludge. A one-stage PNA moving bed biofilm reactor (MBBR) was started up without inoculum at Klagshamn wastewater treatment plant, southern Sweden. The reactor was designed to treat up to 200 kgN d−1, and heated dilution water was used during start-up. The nitrogen removal was >80% after 111 days of operation, and the nitrogen removal rate reached 1.8 gN m−2 d1 at 35 °C. The start-up period of the reactor was comparable to that of inoculated full-scale systems. The operating conditions of the system were found to be important, and online control of the free ammonia concentration played a crucial role. Ex situ batch activity tests were performed to evaluate process performance.

中文翻译：

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在 Klagshamn 污水处理厂启动无接种物的全规模部分亚硝化-厌氧氨氧化 MBBR

摘要部分亚硝化和厌氧氨氧化 (PNA) 是处理厌氧消化污泥脱水产生的富氮浓缩液的有用工艺。瑞典南部 Klagshamn 废水处理厂在没有接种物的情况下启动了一级 PNA 移动床生物膜反应器 (MBBR)。该反应器设计可处理高达 200 kgN d−1 的水，并在启动过程中使用加热的稀释水。运行111天后，脱氮率>80%，35℃时脱氮率达到1.8 gN m−2 d1。反应器的启动时间与接种全尺寸系统的启动时间相当。研究发现系统的运行条件很重要，其中游离氨浓度的在线控制起着至关重要的作用。进行异位批量活性测试以评估工艺性能。