不同污泥接种方式一段式自养脱氮工艺的启动特征

发布时间：2018-04-30 11:29

本文选题：自养脱氮 + 污泥接种方式　；参考：《中国环境科学》2017年01期

【摘要】：采用人工模拟无机高氨氮废水(100-130mg/L),以亚硝化絮状污泥和厌氧氨氧化颗粒污泥为接种污泥,采用两套相同的膨胀颗粒污泥床反应器系统,分别以同步接种和分步接种方式启动一段式自养脱氮工艺.结果表明,与同步接种反应器相比,分步接种反应器在初期适应性及反应器快速启动时间及脱氮能力方面更具优势.同步接种反应器的活性抑制期运行时间是分步接种反应器的2倍多,TN去除率更低;在活性提高期,分步接种反应器启动时间为40d,比同步接种反应器少8d;与同步接种反应器相比,分步接种反应器可更早进入稳定运行期且脱氮效果更好,NH_4~+-N和TN的去除率最高达到84.1%和68%,高于同步接种反应器的79.1%和65.1%.同时,分步接种反应器TN最大去除负荷为0.49KgN/(m~3·d),比同步接种反应器的0.45KgN/(m~3·d)略高.FISH结果进一步表明,一段式自养脱氮工艺启动成功后,AOB和AnAOB都是系统中的优势菌种,而主要干扰菌群NOB被成功抑制.
[Abstract]:Artificial simulated inorganic wastewater containing high ammonia nitrogen (100 ~ 130 mg 路L ~ (-1) L ~ (-1)) was used as inoculation sludge with nitrifying flocculating sludge and anaerobic ammonia oxidized granular sludge, and two identical expanded granular sludge bed reactor systems were used. One stage autotrophic denitrification process was initiated by simultaneous inoculation and step inoculation respectively. The results showed that compared with the simultaneous inoculation reactor, the stepwise inoculation reactor had more advantages in initial adaptability, rapid start-up time and denitrification ability. The activity inhibition period of simultaneous inoculation reactor was more than twice as long as that of step inoculation reactor, the removal rate of TN was lower than that of step inoculation reactor, the start-up time of step inoculation reactor was 40 days, which was 8 days less than that of synchronous inoculation reactor, and compared with synchronous inoculation reactor, the removal rate of TN was lower than that of step inoculation reactor. The removal rate of NH4- N and TN in stepwise inoculation reactor was 84.1% and 68.1%, which was higher than that in synchronous inoculation reactor (79.1% and 65.1%). At the same time, the maximum removal load of TN in stepwise inoculation reactor was 0.49KgN/(m~3 d1, which was slightly higher than that in synchronous inoculation reactor. The results of fish showed that both 0.49KgN/(m~3 and AnAOB were the dominant bacteria in the system after the successful start-up of one stage autotrophic nitrogen removal process. The main interfering bacteria NOB was successfully inhibited.
【作者单位】：哈尔滨工业大学城市水资源与水环境国家重点实验室;
【基金】：黑龙江省自然科学基金重点项目(ZD201412)
【分类号】：X703

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