【Key words】 Microbial activity； Urea hydrolysis； Nitrification； Nitrite accumulation； Inhibitor； Green algae；
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nitrite accumulation rate 亚硝氮积累率
nitrite accumulation could 亚硝酸盐积累率
nitrite nitrogen accumulation 亚硝酸盐氮的积累
accumulation of nitrite nitrogen 亚硝酸盐积累
accumulation rate of nitrite nitrogen 亚硝酸盐氮积累率
accumulation of nitrite 亚硝酸盐积累
accumulation rate of nitrite 亚硝态氮累积率
The reason of nitrite accumulation was analysed in detail.
详细分析了形成亚硝酸盐积累的原因。
The temperature has much greater effect on the Nitrosomonas than Nitrobacter, nitrite accumulation in the middle of the reactor at high temperature.
温度变化对氨氧化菌活性的影响比对亚硝酸氧化菌活性的影响大，温度升高会引起硝化滤池中部出现较高浓度的亚硝酸氮积累。
The experimental results showed that the nitrite accumulation obtained from selective inhibition of high concentration free ammonia to nitrifier was unstable.
试验结果表明：通过高浓度游离氨对硝化菌选择性抑制所获得的亚硝酸盐积累是不稳定的；
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