School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
Bioresour Technol. 2012 Apr;110:701-5. doi: 10.1016/j.biortech.2012.01.066. Epub 2012 Feb 1.
The presence of organic matter (OM) is considered to affect anammox process adversely, while practically wastewaters containing ammonia are not free from OM. In this study, the performance of anammox granules in presence of OM was evaluated under different COD to N ratios. Low OM concentration did not affect ammonia and nitrite removal significantly but improved the total nitrogen removal via denitrifiers. High OM could suppress anammox activity, resulting in a lower ammonia removal. PCR tests revealed that there was a reduction in the number of anammox bacteria and denitrifiers quantity increased when 400mg COD/L influent was applied. A COD to N threshold ratio for anammox inhibition, defined when ammonia removal dropped to 80%, was 3.1, higher than that of flocculent sludge. This study revealed that the coexistence of denitrification and anammox was an effective strategy to treat wastewaters containing high levels of nitrogen and OM.
有机物（OM）的存在被认为会对厌氧氨氧化过程产生不利影响，而实际上含有氨的废水不可能不含 OM。在本研究中，在不同 COD 与 N 比的条件下，评估了 OM 存在时厌氧氨氧化颗粒的性能。低浓度的 OM 对氨和亚硝酸盐的去除没有显著影响，但通过反硝化菌提高了总氮的去除。高浓度的 OM 会抑制厌氧氨氧化活性，导致氨的去除率降低。PCR 测试表明，当进水 COD 为 400mg/L 时，厌氧氨氧化菌的数量减少，反硝化菌的数量增加。当氨去除率降至 80%时，定义厌氧氨氧化抑制的 COD 与 N 阈值比为 3.1，高于絮体污泥。本研究表明，反硝化和厌氧氨氧化共存是处理高浓度氮和 OM 废水的有效策略。
