| 印染污泥基生物炭吸附处理难降解有机废水 |
| |
| 引用本文： | 蒋玉柱,惠贺龙,刘弘毅,丁广超,卢文义,李松庚.印染污泥基生物炭吸附处理难降解有机废水[J].环境工程,2022,40(10):32-39. |
| |
| 作者姓名： | 蒋玉柱 惠贺龙 刘弘毅 丁广超 卢文义 李松庚 |
| |
| 作者单位： | 1. 中国科学院过程工程研究所 多相复杂系统国家重点实验室, 北京 100190; |
| |
| 基金项目： | 美丽中国生态文明建设科技工程专项资助项目 (XDA23030301)教育部产学合作协同育人项目 |
| |
| 摘 要： | 以印染污泥为原料制备污泥基生物炭(SC),分别考察了炭化温度、吸附时间等参数对SC处理废水吸附性能的影响规律,对比研究了SC与专用商业活性炭处理废水的吸附性能。结果表明:高温炭化有利于增加污泥炭的比表面积、孔容、石墨化程度以提高其吸附性能,高温污泥炭SC-900℃的比表面积为140.65 m2/g,介孔孔容占比 ≥ 90%,其处理焦化废水、消化滤液的COD脱除率均可达到商业炭的70%,并表现出优异的脱色能力,对于高色度消化滤液的浊度脱除率(89.56%)显著高于商业炭(16.70%);SC对较大分子污染物具有较高的吸附速率,处理消化滤液达到吸附平衡时间(≤ 120 min)显著低于商业炭(>24 h),尤其对其中含致色官能团的类腐殖质大分子有机物具有选择性吸附能力,且吸附行为主要发生在3.8~5.4 nm的介孔孔道内。并为污泥炭吸附处理废水工业应用提出了指导性建议。
|
| 关 键 词： | 印染污泥 生物炭 难降解有机废水 吸附 |
| 收稿时间： | 2022-01-16 |
STUDY ON THE EFFECTIVENESS OF TEXTILE DYING SLUDGE BIOCHAR IN TREATING REFRACTORY ORGANIC WASTEWATER |
| |
| Affiliation: | 1. State Key Lab of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100190, China;3. Binzhou Institute of Technology, Binzhou 256600, China |
| |
| Abstract: | The sludge-based carbon (SC) was prepared from textile dyeing sludge, and the impact of carbonization temperature and reaction time on the adsorption capacity of SC treating refractory industrial wastewater were investigated. Simultaneously the adsorption preference of SC and commercial activated carbon (CAC) was compared and studied. The results indicate that the SC derived from higher carbonization temperature can own more specific surface area, pore volume and deeper graphitization degree which facilitate its adsorption capacity. The SC-900℃ owns more than 90% mesoporous pore volume and it's specific surface area reaches 140.65 m2/g. The chemical oxygen demand (COD) removal rate of SC-900℃ treating coking wastewater and digest filtrate is as effective as 70% that of CAC. Besides, the SC-900℃(89.56%)present superior decolorizing effect than CAC(16.70%)when treating high chromaticity digestion filtrate. The macromolecular pollutants can be rapidly adsorbed by SC, the adsorption equilibrium time of SC-900℃(≤ 120 min) treating digestion filtrate is significantly lower than that of CAC(>24 h); Especially, the humus-like macromolecular compounds containing chromogenic functional groups could be selectively absorbed in the mesoporous (3.8~5.4 nm) of SC. At last, some guidance suggestions for industrialization application of SC to treat refractory industrial wastewater are put forward based on above research results. |
| |
| Keywords: | |
|
| 点击此处可从《环境工程》浏览原始摘要信息 |
|
点击此处可从《环境工程》下载全文 |
|
