【摘要】：針對山東某化工企業(yè)染料中間體H酸生產(chǎn)廢水的特點,選擇合適的萃取劑和稀釋劑,采用絡合萃取法對廢水進行預處理,將廢水中的有機物富集于萃取有機相中,可大幅度地降低原廢水的COD;富集有機物的萃取劑經(jīng)反萃處理后進行再生并循環(huán)使用,同時回收原廢水中的H酸產(chǎn)品,以實現(xiàn)廢水的資源化應用。本論文開發(fā)了一種H酸生產(chǎn)廢水的處理新方法,并成功解決了制約相關企業(yè)生產(chǎn)H酸的技術瓶頸。論文首先結合H酸廢水的性質及水體中H酸的存在形態(tài),確定了絡合萃取處理的工藝條件,如絡合劑的選擇、萃取劑的組成、廢水初始pH、油水比及反萃劑的濃度等;并根據(jù)絡合萃取平衡實驗及反應萃取平衡模型假設,探討了萃取劑對H酸的絡合萃取機理;通過氧化法、吸附法等對萃余水相進行處理。主要取得如下研究結果:1.采用C152萃取體系對H酸生產(chǎn)廢水進行預處理,在最佳工藝條件下廢水COD的去除率達98.92%,萃余水相COD為784 mg·L-1;2.富集污染物的萃取有機相通過加入質量分數(shù)為10%的NaOH溶液進行反萃,可實現(xiàn)萃取劑的再生,循環(huán)萃取實驗表明,萃取劑再生性能良好;3.反萃液經(jīng)酸化處理后可回收H酸產(chǎn)品,且產(chǎn)品質量達到企業(yè)生產(chǎn)標準;4.絡合萃取反應機理研究表明:采用該萃取劑對H酸進行絡合萃取,體系中主要形成(1:1)、(1:2)、(2:1)三種類型的萃合物;5.采用活性炭吸附-NaClO氧化法對H酸生產(chǎn)廢水進行深度處理,可達到企業(yè)對廢水處理的技術需求。
[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.
【學位授予單位】：南京師范大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：X788

【參考文獻】

相關期刊論文 前10條

1 王建龍;初里冰;;電離輻照技術在廢水處理中的研究進展[J];環(huán)境工程學報;2017年02期

2 包偉;黃勇;張寧博;王飛;;強化厭氧生物技術在印染廢水處理中的應用[J];化工環(huán)保;2016年05期

3 高明龍;陳貴鋒;董衛(wèi)果;王吉坤;付楚芮;;基于磷酸三丁酯絡合萃取法的脫酚機理研究[J];煤化工;2016年04期

4 方玲;孟冠華;魏旺;司晨浩;;苯系染料中間體生產(chǎn)廢水的處理技術現(xiàn)狀與發(fā)展[J];染料與染色;2016年04期

5 簡浩;徐衛(wèi)華;劉云國;曾光明;李欣;;簡青霉-生物炭聯(lián)合吸附處理染料廢水[J];環(huán)境工程學報;2016年03期

6 程迪;馬文靜;付丹丹;宋紅;于姍姍;;染料及中間體生產(chǎn)廢水治理[J];染料與染色;2016年01期

7 宋紅;孫宇明;馬文靜;;高鹽苯胺類生產(chǎn)廢水處理工藝研究[J];精細與專用化學品;2016年02期

8 張滕;王勇梅;彭昌盛;袁合濤;;染料廢水的處理方法及研究進展[J];環(huán)�？萍�;2016年01期

9 楊志林;董自斌;王開春;田鳳蓉;郭濤;李學字;;絡合萃取法預處理H酸廢水[J];環(huán)境科技;2015年06期

10 王吉坤;董衛(wèi)果;杜松;高明龍;付楚芮;;氣化廢水絡合萃取脫酚影響因素的研究[J];煤炭加工與綜合利用;2015年08期

相關碩士學位論文 前2條

1 王銀娜;分散染料廢水絮凝脫色作用及機理的初步研究[D];南京理工大學;2014年

2 楊帆;鋼絲繩工業(yè)廢水的處理與資源化研究[D];南京師范大學;2012年

，

本文編號：2507413