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| Research on the recovery strategy for nitrosation at room temperature |
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Abstract At room temperature conditions [(22±1℃)], by using SBR reactor, it is explored that how delay aeration impact nitrosation stability for low ammonia nitrogen sewage and efficient recovery strategy for nitrosation instability because of delay aeration is looked for. Results show that the delay aeration creates a favorable environment to NOBs so that NOBs can reproduce rapidly, delay aeration of 1h for the 23d eventually makes the nitrosation system instability; nitrosation instability needs to adopt a joint recovery strategy that the additional 1h front stir anaerobic phase and control of ammonia oxidation rate at about 50% by shortening the aeration time is carried out. Then nitrosation can be realized through 60cycle (20d).
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Received: 06 November 2013
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