| 海水优化ANAMMOX包埋固定化及其处理含海水污水的脱氮性能 |
| 摘要点击 3167 全文点击 1022 投稿时间：2017-06-15 修订日期：2017-09-23 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 厌氧氨氧化 含海水污水 包埋固定化 霍夫迈斯特效应 脱氮 |
| 英文关键词 ANAMMOX wastewater containing seawater immobilization Hofmeister effect nitrogen removal |
|
| 中文摘要 |
| 为提高包埋厌氧氨氧化菌材料的机械稳定性，通过实验对包埋原材料组合进行筛选并在制备过程中添加海水对材料性能进行优化.结果显示：最优材料配比为聚乙烯醇（PVA 125 g·L-1）-海藻酸钠（SA 20 g·L-1）-活性炭（40 g·L-1），固化时间为18 h.添加海水优化后，由于霍夫迈斯特效应，胶珠内部孔径较大且分布不均，机械稳定性和生物容纳量明显高于淡水组，根据拉曼光谱解析表明添加海水后胶珠中-OH可更大程度与交联剂发生交联反应.利用活化后的包埋菌处理含海水污水，经过21 d的运行NH4+-N去除率达到90%左右，化学计量比△NH4+-N：△NO2--N：△NO3--N稳定在1：（1.04±0.1）：（0.17±0.02），自第21 d开始静止运行至第46 d后负荷提升1倍，氨氮去除率和化学计量比无明显波动，总氮去除率稳定在85%左右，总氮去除负荷为0.2kg·（m3·d）-1. |
| 英文摘要 |
| In order to improve the mechanical stability of the material, the embedded raw material combination was studied in the experiment, and seawater was added to optimize the performance of the material. The results indicated that the optimal material ratio was polyvinyl alcohol (PVA 125 g·L-1)-alginate sodium (SA 20 g·L-1)-activated carbon (40 g·L-1). The curing time was 18 h. After adding seawater, the beads were found to have larger pore sizes inside, and the pores were distributed unevenly because of the Hofmeister effect. At the same time, the mechanical stability and biological capacity were found to be significantly higher than those of the fresh water group. The Raman spectra analysis showed that the addition of seawater made the-OH on PVA have greater crosslinking reactions with the crosslinker. The activated sludge was used to treat wastewater containing sea water, and after an operation of 21 d, the removal rate of NH4+-N was about 90%, and the stoichiometric ratio of △NH4+-N:△NO2--N:△NO3--N was stable at 1:(1.04±0.1):(0.17±0.02). From the 21st day to the 46th day, the reactor was run in a steady state. When the nitrogen load rate doubled, the ammonia nitrogen removal rate and stoichiometry had little variations. The total nitrogen removal rate was about 85%, and the total nitrogen removal load rate was 0.2 kg·(m3·d)-1. |
|
|
|
