粉末活性炭去除反渗透浓水中的有机物及溶剂逆流再生-环境工程专业论文.docxVIP

loaded PAC whose adsorption capacity was exhausted. The optimal regenerant was determined by comparing the regenerative effect of different regenerants. The influence factors and parameters for PAC regeneration were analyzed in the paper. The results indicated that the regeneration efficiency of organic solvents was better than that of inorganic solvents, and methanol was the best among the three organic solvents used in the study. The optimal regeneration time was 30 min when methanol was used as the regenerant. When the ratio of PAC to methanol was 5 g/L, the regeneration efficiency could reach to 75%. At the same dosage of regenerant, the regeneration efficiency of two-stage countercurrent regeneration was higher than single-stage regeneration. Regeneration efficiency decreased with the number of regeneration cycle, and increased with the regeneration temperature. KEY WORDS: reverse osmosis concentrate; organic pollutants; powdered activated carbon; microfiltration; countercurrent adsorption; regenerant; countercurrent regeneration I I 目 录 第一章 绪论1 1.1 反渗透及其应用 1 1.1.1 反渗透工艺原理1 1.1.2 反渗透技术的应用2 1.2 反渗透浓水性质及研究现状 3 1.2.1 反渗透浓水来源及性质3 1.2.2 ROC 国内外研究方法 3 1.3 活性炭吸附工艺研究现状 5 1.3.1 活性炭的分类5 1.3.2 活性炭吸附原理及影响因素6 1.3.3 活性炭吸附应用现状6 1.3.4 PAC 吸附与膜分离组合工艺的应用 7 1.4 活性炭再生研究现状 7 1.5 课题研究背景及意义 8 1.5.1 课题研究背景8 1.5.2 课题研究意义9 1.6 实验方案的选择 9 第二章 PAC-MF 累积四级逆流吸附小试试验 10 2.1 引言 10 2.2 PAC 累积逆流吸附试验原理 10 2.3 试验材料 11 2.3.1 PAC 性能指标及水质指标 11 2.3.2 试验药剂12 2.4 试验相关计算 12 2.4.1 吸附等温线的确定13 2.4.2 响应面试验15 2.4.3 启动投炭量及逆流投炭量的计算17 2.5 试验装置及其运行方式 18 2.5.1 试验装置及设备18 2.5.2 试验装置运行方式20 II II 2.6 试验监测指标及分析方法 24 2.7 结果与讨论 25 HYPERLINK \l _TOC_250004 2.7.1 SF 的变化情况 25 2.7.2 出水浊度的变化情况26 HYPERLINK \l _TOC_250003 2.7.3 SS 的变化情况 27 HYPERLINK \l _TOC_250002 COD 的去除情况 28 HYPERLINK \l _TOC_250001 DOC 的去除情况 29 2.7.6 UV254 的去除情况 30 HYPERLINK \l _TOC_250000 2.7.7 出水 SDI 情况 30 2.7.8 试验成本计算31 2.8 本章小结 31 第三章 PAC-MF 累积四级逆流吸附处理高盐度 ROC33 3.1 引言 33 3.2 试验材料 33 3.2.1 PAC 性能指标及水质指标 33 3.2.2 试验药剂34 3.3 试验相关