短程硝化-厌氧氨氧化组合工艺在酒精废水处理中的应用研究

摘要：本课题目的是建立一个短程硝化-厌氧氨氧化组合工艺，期望解决酒精废水厌氧处理装置出水氮素超标的问题。首先研究了pH和通气量这两个因素对短程硝化系统的影响，结果显示，在进水pH 7。5～8。5范围内均可实现稳定的短程硝化功能，氨氮氧化率55。1~63。7%，亚硝氮积累率达99%，其中在pH在8。0时出水NH4+-N与NO2--N浓度比最为接近厌氧氨氧化的理论值。当进水pH值为8。0时，在通气量为0。3~0。6 L/(L·min) 时，均可实现短程硝化系统的稳定运行，但通气量小于等于0。2 L/(L·min) 时，系统功能会迅速恶化。在随后的厌氧氨氧化实验中，经过90 d的驯化系统获得了明显的厌氧氨氧化活性，氨氮和亚硝氮去除率分达到60%和35%。由于厌氧氨氧化细菌生长极其缓慢，尚需进一步延长驯化时间才能获得理想的厌氧氨氧化效率。86089

关键词：短程硝化；酒精废水；厌氧氨氧化

Study on the application of shortcut nitrification-anaerobic ammonia oxidation hybrid process in the treatment of alcohol-producing wastewater

Abstract：The purpose of this study was to establish a SHARON-Anammox hybrid process for eliminating ammonia from the effluent of anaerobic digester treating ethanol-producing wastewater。 The effects of influent pH value and aeration rate on shortcut nitrification process were investigated in 5 SBR reactors。 The results showed that shortcut nitrification could be successfully established between pH 7。5 and pH 8。5, with oxidation rate of ammonia of 55。1~63。7% and nitrite accumulation ration of 99%。 Running the system at pH 8 led to ideal effluent ammonium to nitrite ratio of 1:1。60, which is very close to the theoretical value of 1:1。32 required for anaerobic ammonium oxidation。 When the system was fed with influent of pH 8。0, steady operation could be achieved at an aeration rate of 0。3~0。6 L/(L·min)。 However, deterioration occurs once the aeration rate was reduced to below 0。2 L/(L·min)。 During subsequent experimental period, anaerobic ammonia oxidation occurred after an acclimatization period of 90 d as indicated by ammonium removal rate of 60% and nitrite removal rate of 35%。 However further acclimatization is still required for satisfactory anaerobic ammonium oxidation activity due to extremely low growth rate of anaerobic ammonium oxidizing bacteria。

Key words: Shortcut nitrification; alcohol waste-water; anaerobic ammonium oxidation

摘要 1

关键词 1

Abstract 1

Key words 1

引言 2

1 材料与方法 2

1。1 实验材料 2

1。1。1 实验所用废水及污泥 2

1。1。2 反应器装置 3

1。2 实验方法 3

1。2。1 短程硝化系统的建立 3

1。2。1。1 不同进水pH对短程硝化系统运行的影响 3

1。2。1。2 不同通气量对短程硝化系统运行的影响 3

1。2。2 厌氧氨氧化系统的建立 3

1。2。3 样品测定方法 3

2 结果与分析 4

2。1 不同进水pH条件下短程硝化系统的建立 4

2。1。1 不同进水pH条件下氨氮、亚硝氮、硝氮含量测定短程硝化-厌氧氨氧化组合工艺在酒精废水处理中的应用研究:http://www.youerw.com/shengwu/lunwen_102000.html