厌氧填料反应塔厌氧氨氧化（ANAMM0X）深度脱氮的性能研究

发布时间：2018-05-06 00:39

本文选题：厌氧氨氧化 + 脱氮　；参考：《云南大学》2016年硕士论文

【摘要】：厌氧氨氧化技术是一种新型生物脱氮技术,它不用工程曝气,不用另外添加有机碳源,有低耗可持续的特点。但是厌氧氨氧化菌生长缓慢,生存环境要求严苛,造成了厌氧氨氧化反应器启动时间过长。本研究从添加填料、微生物包埋固定微生物的角度出发,旨在解决厌氧氨氧化反应器启动过缓、有效微生物易流失的难题,主要研究结果如下：(1)以海绵、海绵+火山岩、海绵+机制炭为填料,接种混合污泥(好氧活性污泥：缺氧池污泥：普通厌氧污泥=1：2：1),对比分析三种填料对厌氧填料反应塔启动厌氧氨氧化反应和脱氮性能的影响,结果显示：三个反应器都成功启动厌氧氨氧化反应,T2(海绵+火山岩+混合污泥)反应器耗时120天成功启动厌氧氨氧化过程,用时最短,稳定期NH4+-N、NO2--N平均去除率达95%,TN平均去除率达90%；T3(海绵+机制炭+混合污泥)反应器内N03--N量生成最少,添加机制炭可以提高厌氧氨氧化反应对N03--N的去除能力。(2)以T2反应器运行120天的厌氧氨氧化混合污泥为种泥,使用聚乙烯醇和海藻酸钠(PVA-SA)制取包埋小球,经过53天培养出具有厌氧氨氧化活性小球,成功启动厌氧氨氧化反应器,NH4+-N、NO2--N去除率在90%以上,TN去除率稳定在81%以上,TN去除容积负荷达0.47 kg/(m3·d),比未包埋固定厌氧氨氧化混合污泥的TN去除容积负荷0.34 kg/(m3·d)大,厌氧氨氧化功能得到加强,减少了微生物流失。(3)厌氧氨氧化反应启动过程中,出水pH高于进水pH,活性稳定期,NH4+-N消耗量/N02-N消耗量/N03--N生成量低于理论值1：1.32：0.26,说明在反应器内存在厌氧氨氧化反应和反硝化反应发生耦合作用;DO值为0.20-0.48mg/L时,包埋小球反应器单个反应周期ORP值的范围是65-125mv,和理论值相符合。
[Abstract]:Anaerobic ammonia oxidation (anammox) is a new biological denitrification technology. It does not require engineering aeration and the addition of organic carbon sources, which has the characteristics of low consumption and sustainable. However, the anaerobic ammonia-oxidizing bacteria grow slowly and the living environment is strict, which results in the long start-up time of the anaerobic ammonia oxidation reactor. This study aims at solving the problem of slow start-up of anaerobic ammonia oxidation reactor and easy loss of effective microorganisms from the point of view of adding fillers and embedding and immobilization of microorganisms. The main results are as follows: (1) Sponge, sponge volcanic rock, Sponge activated carbon was used as filler and mixed sludge (aerobic activated sludge: anoxic pool sludge: common anaerobic sludge 1: 2: 1) was inoculated. The effects of three kinds of fillers on anaerobic ammonia oxidation and denitrification in anaerobic packed reactor were compared and analyzed. The results showed that it took 120 days for all three reactors to start the anaerobic ammonia oxidation reactor T2 (sponge volcanic rock mixed sludge) reactor successfully, and the time was the shortest. The average removal rate of NH4-Nu no _ 2--N reached 95% and the average removal rate of TN reached 90% in T3 (sponge carbon mixed sludge) reactor, which produced the least amount of N03-N in the reactor. The removal capacity of N03 N in anaerobic ammonia oxidation reaction can be improved by adding mechanism carbon. (2) using anaerobic ammonia oxidation mixed sludge from T2 reactor for 120 days as sludge, polyvinyl alcohol and sodium alginate (PVA-SA) were used to prepare encapsulated pellets. After 53 days of culture, the anaerobic ammoxidation active pellets were obtained. The removal rate of NH _ 4-N no _ 2-N in anaerobic ammonia oxidation reactor was more than 90% and the removal rate of TN was stable at over 81%. The volumetric load of TN removal was 0.47 kg/(m3 / dL, which was larger than that of unimbedded anaerobic ammonia oxidation mixed sludge (TN removal capacity was 0.34 kg/(m3 d). The function of anaerobic ammoxidation was strengthened to reduce the loss of microorganism. The effluent pH is higher than the influent pH, the NH _ 4-N consumption / N _ 02-N consumption / N _ (03) -N production is lower than the theoretical value of 1: 1.32: 0.26, which indicates that there is a coupling effect between anaerobic ammonia oxidation reaction and denitrification reaction in the reactor when the do value is 0.20-0.48mg/L. The range of ORP value for a single reaction period of the encapsulated pellet reactor is 65-125 MV, which is in agreement with the theoretical value.
【学位授予单位】：云南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：X703

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