污染控制技术及原理
金仁村,郑平,胡安辉.盐度对厌氧氨氧化反应器运行性能的影响[J].环境科学学报,2009,29(1):81-87
盐度对厌氧氨氧化反应器运行性能的影响
- Effect of salinity on the performance of an anammox reactor
- 基金项目：国家自然科学基金(No.50808060);国家高技术研究发展计划(863)项目(No.2006AA06Z332)
- 作者
- 单位
- 金仁村
- 1. 浙江大学环境工程系, 杭州 310029; 2. 杭州师范大学环境科学系, 杭州 310036
- 郑平
- 浙江大学环境工程系, 杭州 310029
- 胡安辉
- 浙江大学环境工程系, 杭州 310029
- 摘要：考察了厌氧氨氧化反应器处理高盐度、高浓度含氮废水的可行性.结果表明,高盐度显著抑制厌氧氨氧化活性,这种抑制具有可逆性.在30g·L-1(以NaCl计)盐度条件下,未驯化污泥的厌氧氨氧化活性比对照(无盐水质条件)低67.5%;驯化污泥的厌氧氨氧化活性只比对照低45.1%.由高盐环境转移到低盐环境(无盐水)时,驯化污泥的厌氧氨氧化活性可提高43.1%.通过逐渐提高盐浓度,并调整反应器容积负荷避免基质抑制,可使厌氧氨氧化反应器适应30g·L-1(以NaCl计)盐度,其处理效能与对照期接近.但由于高盐度条件对厌氧氨氧化细菌生长的负面影响,反应器长期运行于高盐度条件下,容易出现功能衰退.
- Abstract：The feasibility of using an anammox(anaerobic ammonium oxidation) bioreactor to treat ammonium-rich brines was investigated.The results showed that the anammox activity was significantly inhibited by high salinity level and the inhibition was reversible.A salt shock loading of 30 g·L-1(as NaCl) caused a 67.5% decrease in specific anammox activity compared to reference biomass(not exposed to salt).But the acclimatized biomass showed a specific anammox activity that was only 45.1% lower than that of the reference biomass.When transferred from brine to freshwater,the salt-exposed biomass resumed its activity by 43.1%.After appropriate acclimatization,the reactor performed well and the substrate removal capacity under a salinity of 30 g·L-1(as NaCl) was comparable with that under freshwater conditions.However,the bioreactor was prone to malfunction after long-term salinity stress on the growth of anammox bacteria.
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