摘要本文以生物炭作为好氧颗粒污泥的聚集核心，采用具有自絮凝性能的特效微生物Rhizobium sp.NUJST18作为生物强化菌剂，构建吡啶降解好氧颗粒污泥，并进一步优化培养条件，实现吡啶降解好氧颗粒污泥的快速培养。通过投加生物炭并以NJUST18菌株作为生物强化菌剂，在32d成功培养出可降解吡啶的好氧颗粒污泥，颗粒污泥粒径为1.5-2 mm左右；在SBR反应器中好氧颗粒污泥能够在5h内降解进水浓度为1500mg/L模拟吡啶废水，并伴有氨化和硝化反应；投加生物炭的SBR1反应器运行稳定后污泥SVI值为58.97ml/g，未投加生物炭的SBR0反应器污泥SVI值为121.31mg/L，表明向污泥体系投加生物炭能够明显提高污泥沉降性。本文的研究结果证明，生物炭对吡啶降解污泥快速颗粒化研究具有较大的应用潜力。26331
关键词 好氧颗粒污泥 生物降解 吡啶 生物炭 颗粒化
毕业论文设计说明书外文摘要
Title Study on the rapid granulation of sludge capable of degrading pyridine
Abstract
In this dissertation, the aerobic granules capable of degrading pyridine was developed, using biochar as the aggregation core of the aerobic granular sludge and Rhizobium sp.NUJST18 capable of self-coagulation as the augumentation inocula. The cultural conditions was optimazed and the rapid cultivation of the aerobic granules capable of degrading pyridine was achieved. At the presence of the biochar and NJUST18, the aerobic granules could be developed within 32 days, with the average diametre at around 1.5-2 mm. 1500 mg/L of pyridine could be degraded completely by aerobic granular sludge within 5 hours and accompanied by ammoniation and nitrification at the same time. The SVI of the aerobic granules in the SBR1 added with biochar was as low as 58.97ml/g, while the SVI in the control reactor SBR0 without the biochar was 121.31ml/g, indicating the addition of the biochar was helpful for the improvement in terms of the settleability. The results from this study indicated that the biochar has great application potential in rapid culture aerobic granular sludge capable of degrading pyridine.
Keywords Aerobic granular sludge Biodegradation Pyridine Biochar Granulation
目录
1 引言 1
1.1 吡啶的简介 1
1.2 含吡啶废水的治理方法 1
1.3 好氧颗粒污泥的研究 2
1.4 研究课题的提出和内容 6
2 实验材料与方法 7
2.1 实验材料 7
2.2 实验方法 8
2.3 实验表征方法 9
3 结果与讨论 12
3.1 反应器中吡啶降解情况 12
3.2 反应器内好氧颗粒污泥的形成 15
结 论 20
致 谢 21
参考文献22
1 引言
1.1 吡啶的简介
吡啶是被应用最广的有机化合物之一，其结构为含有一个氮杂原子的751元杂环化合物[1]。可以看作苯分子中的一个（CH）被N取代的化合物，故又称氮苯，无色或微黄色液体，有恶臭。
吡啶及其衍生物在化工产业中被广泛应用，不仅可以作为橡胶、颜料等的制备溶剂，制药和爆炸品，也应用于农业杀虫剂和除草剂[2]。吡啶对微生物呈强烈抑制作用，难于被空气氧化且是水中典型的难降解的有机物，能溶于水和醇、醚等多数有机溶剂，甚至可以溶解某些无机盐类。其对神经有致毒作用，对眼角膜有损害。具有生物毒性、致畸变和致癌特性，对人的危害极大[3-5]。其广泛存在于焦化废水、染料废水、制药废水、农药废水等工业废水及木材防腐处理场地周围的土壤和地下水中[6]。因此，科学有效地治理受其污染水和土壤是目前环境治理领域的重要课题之一。 吡啶降解污泥快速颗粒化+文献综述:http://www.751com.cn/huaxue/lunwen_20463.html