染料中间体H酸生产废水的处理与资源化
发布时间：2019-06-28 15:36
【摘要】：针对山东某化工企业染料中间体H酸生产废水的特点,选择合适的萃取剂和稀释剂,采用络合萃取法对废水进行预处理,将废水中的有机物富集于萃取有机相中,可大幅度地降低原废水的COD;富集有机物的萃取剂经反萃处理后进行再生并循环使用,同时回收原废水中的H酸产品,以实现废水的资源化应用。本论文开发了一种H酸生产废水的处理新方法,并成功解决了制约相关企业生产H酸的技术瓶颈。论文首先结合H酸废水的性质及水体中H酸的存在形态,确定了络合萃取处理的工艺条件,如络合剂的选择、萃取剂的组成、废水初始pH、油水比及反萃剂的浓度等;并根据络合萃取平衡实验及反应萃取平衡模型假设,探讨了萃取剂对H酸的络合萃取机理;通过氧化法、吸附法等对萃余水相进行处理。主要取得如下研究结果:1.采用C152萃取体系对H酸生产废水进行预处理,在最佳工艺条件下废水COD的去除率达98.92%,萃余水相COD为784 mg·L-1;2.富集污染物的萃取有机相通过加入质量分数为10%的NaOH溶液进行反萃,可实现萃取剂的再生,循环萃取实验表明,萃取剂再生性能良好;3.反萃液经酸化处理后可回收H酸产品,且产品质量达到企业生产标准;4.络合萃取反应机理研究表明:采用该萃取剂对H酸进行络合萃取,体系中主要形成(1:1)、(1:2)、(2:1)三种类型的萃合物;5.采用活性炭吸附-NaClO氧化法对H酸生产废水进行深度处理,可达到企业对废水处理的技术需求。
[Abstract]:According to the characteristics of dye intermediate H acid production wastewater in a chemical enterprise in Shandong Province, the COD; of raw wastewater can be greatly reduced by selecting suitable extractant and diluent, pretreating the wastewater by complexation extraction, and enriching the organic matter in the extraction organic phase. The extractant enriched in organic matter was regenerated and recycled after stripping treatment, and the H-acid products in the original wastewater were recovered in order to realize the resource application of the wastewater. In this paper, a new method for the treatment of H acid production wastewater has been developed, and the technical bottleneck restricting the production of H acid in related enterprises has been successfully solved. Firstly, according to the properties of H acid wastewater and the existing form of H acid in water, the technological conditions of complexation extraction, such as the selection of complexing agent, the composition of extractant, the initial pH, oil / water ratio of wastewater and the concentration of stripping agent, were determined, and the mechanism of complexation extraction of H acid by extractant was discussed according to the equilibrium experiment of complexation extraction and the hypothesis of reactive extraction equilibrium model. The extracted aqueous phase was treated by oxidation and adsorption. The main results are as follows: 1. The wastewater from H acid production was pretreated with C152 extraction system. under the optimum conditions, the removal rate of COD was 98.92%, and the COD of residual aqueous phase was 784 mg 路L ~ (- 1). The extraction organic phase of enriched pollutants can realize the regeneration of extractant by adding 10% NaOH solution. The cyclic extraction experiment shows that the regeneration performance of extractant is good. After acidizing, the product of H acid can be recovered, and the quality of the product can meet the production standard of the enterprise. 4. The study on the mechanism of complexation extraction showed that three types of extraction complexes were mainly formed in the system (1:1), (1:2), (2:1) by using the extractant to extract H acid with the extractant. 5. The advanced treatment of H acid production wastewater by activated carbon adsorption-NaClO oxidation can meet the technical requirements of wastewater treatment in enterprises.
【学位授予单位】：南京师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X788
本文编号：2507413
[Abstract]:According to the characteristics of dye intermediate H acid production wastewater in a chemical enterprise in Shandong Province, the COD; of raw wastewater can be greatly reduced by selecting suitable extractant and diluent, pretreating the wastewater by complexation extraction, and enriching the organic matter in the extraction organic phase. The extractant enriched in organic matter was regenerated and recycled after stripping treatment, and the H-acid products in the original wastewater were recovered in order to realize the resource application of the wastewater. In this paper, a new method for the treatment of H acid production wastewater has been developed, and the technical bottleneck restricting the production of H acid in related enterprises has been successfully solved. Firstly, according to the properties of H acid wastewater and the existing form of H acid in water, the technological conditions of complexation extraction, such as the selection of complexing agent, the composition of extractant, the initial pH, oil / water ratio of wastewater and the concentration of stripping agent, were determined, and the mechanism of complexation extraction of H acid by extractant was discussed according to the equilibrium experiment of complexation extraction and the hypothesis of reactive extraction equilibrium model. The extracted aqueous phase was treated by oxidation and adsorption. The main results are as follows: 1. The wastewater from H acid production was pretreated with C152 extraction system. under the optimum conditions, the removal rate of COD was 98.92%, and the COD of residual aqueous phase was 784 mg 路L ~ (- 1). The extraction organic phase of enriched pollutants can realize the regeneration of extractant by adding 10% NaOH solution. The cyclic extraction experiment shows that the regeneration performance of extractant is good. After acidizing, the product of H acid can be recovered, and the quality of the product can meet the production standard of the enterprise. 4. The study on the mechanism of complexation extraction showed that three types of extraction complexes were mainly formed in the system (1:1), (1:2), (2:1) by using the extractant to extract H acid with the extractant. 5. The advanced treatment of H acid production wastewater by activated carbon adsorption-NaClO oxidation can meet the technical requirements of wastewater treatment in enterprises.
【学位授予单位】：南京师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X788
【参考文献】
相关期刊论文 前10条
1 王建龙;初里冰;;电离辐照技术在废水处理中的研究进展[J];环境工程学报;2017年02期
2 包伟;黄勇;张宁博;王飞;;强化厌氧生物技术在印染废水处理中的应用[J];化工环保;2016年05期
3 高明龙;陈贵锋;董卫果;王吉坤;付楚芮;;基于磷酸三丁酯络合萃取法的脱酚机理研究[J];煤化工;2016年04期
4 方玲;孟冠华;魏旺;司晨浩;;苯系染料中间体生产废水的处理技术现状与发展[J];染料与染色;2016年04期
5 简浩;徐卫华;刘云国;曾光明;李欣;;简青霉-生物炭联合吸附处理染料废水[J];环境工程学报;2016年03期
6 程迪;马文静;付丹丹;宋红;于姗姗;;染料及中间体生产废水治理[J];染料与染色;2016年01期
7 宋红;孙宇明;马文静;;高盐苯胺类生产废水处理工艺研究[J];精细与专用化学品;2016年02期
8 张滕;王勇梅;彭昌盛;袁合涛;;染料废水的处理方法及研究进展[J];环保科技;2016年01期
9 杨志林;董自斌;王开春;田凤蓉;郭涛;李学字;;络合萃取法预处理H酸废水[J];环境科技;2015年06期
10 王吉坤;董卫果;杜松;高明龙;付楚芮;;气化废水络合萃取脱酚影响因素的研究[J];煤炭加工与综合利用;2015年08期
相关硕士学位论文 前2条
1 王银娜;分散染料废水絮凝脱色作用及机理的初步研究[D];南京理工大学;2014年
2 杨帆;钢丝绳工业废水的处理与资源化研究[D];南京师范大学;2012年
，本文编号：2507413
本文链接：https://www.wllwen.com/shengtaihuanjingbaohulunwen/2507413.html
