1、 毕业设计说明书 (论文 ) 作 者 : 林天德 学 号 : 0904150123 院 系: 化学工程学院 专 业: 生物工程 题 目: 印染废水深度处理与回用的关键技术研究 指导者: 贾艳萍 副教授 评阅者: 2013 年 6 月 吉 林 摘 要 I 摘 要 近年来,随着印染工业的迅速发展,日常生活中各种染料的不断使用,使含有复杂成分的印染废水排放到环境中,造成严重的污染。印染废水已经成为我国水域的重点污染源。 本课题以刚果红、溴酚蓝作为模拟印染废水,分别用粉煤灰和壳聚糖 以及不同 pH下改性后的粉煤灰对模拟印染废水进行处理,其中用盐酸改性的粉煤灰处理时最适 pH为 6,本实验采用传统脱氮反
2、应,各处理过程均在序批式 生物反应器 (SBR)中 完成。在实验过程中对模拟印染废 水的各项指标进行了测定, 实验结果表明 ,处理效果最佳时, NH4+-N浓度为 1.5mg/L,去除率最高可达 80%;总氮去除率可达 50%, DO值在 3.183.25之间 , COD浓度可达 79mg/L。 关键词: 印染 废水 ; SBR; 壳聚糖;粉煤灰 Abstract II Abstract In recent years, with the rapid development of printing and dyeing industry, the growing use of various
3、dyes, in everyday life that contain complex elements of printing and dyeing wastewater discharge into the environment, cause serious pollution. Printing and dyeing wastewater has become a key pollution sources of waters in our country. This topic with Congo red, bromophenol blue as simulated printin
4、g and dyeing wastewater, respectively with fly ash under different pH and chitosan and modified fly ash was carried out on the simulated printing and dyeing wastewater treatment, including hydrochloric acid modified fly ash processing when the optimal pH of 6, this experiment adopts the conventional
5、 denitrification reaction, all the process in a sequencing batch type bioreactor (SBR). During the experiment to simulate the indicators of printing and dyeing wastewater were determined, and the experimental results show that the best treatment effect, NH4+-N concentration is 1.5 mg/L, the removal rate up to 80%; Total nitrogen removal rate can reach 50%, the DO value between 3.183.25, COD concentration of 79 mg/L. Key words: Printing and dyeing wastewater; SBR; Chitosan; The fly ash