硫自养反硝化处理高硝态氮废水的运行特性研究

发布时间：2018-06-03 02:31

本文选题：硫自养反硝化 + 高浓度硝态氮　；参考：《中国给水排水》2017年15期

【摘要】：采用硫自养反硝化技术处理高浓度NO_3~--N废水,考察了其处理性能及微生物种群结构。在HRT为14 h、碳酸氢钠为碱度条件下,反应器脱氮负荷与脱氮量分别高达1.47 kg/(m~3·d)和800 mg/L。以石灰石作为碱度可有效降低处理成本,单级装置脱氮成本为0.814元/m~3,对于高浓度NO_3~--N废水可采取多级串联方式保证出水NO_3~--N浓度较低。解析微生物群落结构发现,在高浓度NO_3~--N条件下,系统微生物种群结构较单一,功能性微生物所占比例较高,其中脱氮硫杆菌Thiobacillus和反硝化硫单胞菌Sulfurimonas所占比例分别为37.61%和20.39%。
[Abstract]:High concentration NO_3~--N wastewater was treated by sulfur autotrophic denitrification, and its treatment performance and microbial population structure were investigated. Under the conditions of HRT being 14 h and sodium bicarbonate as alkalinity, the denitrification load and denitrification capacity of the reactor were as high as 1.47 kg/(m~3 / d and 800 mg / L, respectively. Using limestone as alkalinity can effectively reduce the cost of treatment. The denitrification cost of single stage plant is 0.814 yuan / m ~ (3). For high concentration NO_3~--N wastewater, the multistage series method can be adopted to ensure the low NO_3~--N concentration of effluent. It was found that under the condition of high concentration of NO_3~--N, the population structure of systemic microorganism was relatively single, and the proportion of functional microorganism was higher. The proportions of Thiobacillus and Sulfurimonas were 37.61% and 20.39%, respectively.
【作者单位】：江南大学环境与土木工程学院;江苏省厌氧生物技术重点实验室;江苏高校水处理技术与材料协同创新中心;
【基金】：国家水体污染控制与治理科技重大专项(2015ZX07306-001) 江苏省重点研发计划(社会发展)科技示范工程(BE2015622)
【分类号】：X703

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