CAJ | 학술논문

文章研究了从牛仔布染色废水中回收靛蓝染料的方法.取自常州某印染厂的染色废水中,其靛蓝含量为249.6mg/L.经预处理-晶体再析-膜回收处理工艺,成功的回收了废水中的靛蓝染料.首先通过显微镜观察、统计废水中的纤维和颗粒大小,选用聚丙烯无纺布PP25预处理,过滤除去废水中的纤维及大颗粒杂质;然后加酸调节pH值至6,鼓空气氧化30min,将隐色体靛蓝氧化为氧化态的固体靛蓝析出,后调pH至4,有效削弱表面活性剂的增溶作用,实现靛蓝晶体再析,同时破坏废水中的胶体物质,减轻后续分离过程中对膜的污染;处理过后的靛蓝染色废水经PE微滤膜过滤,靛蓝染料可全部截留.膜孔径0.2μm,所得靛蓝含量达50.17%,出水在660nm波长下的吸光度为0.02,色度、浊度分别降低99.2%和99.5%,COD去除率达80.6%.该工艺回收靛蓝染料的同时,废水水质有很大程度的改善,减轻了废水的后处理负担.
문장연구료종우자포염색폐수중회수전람염료적방법.취자상주모인염엄적염색폐수중,기전람함량위249.6mg/L.경예처리-정체재석-막회수처리공예,성공적회수료폐수중적전람염료.수선통과현미경관찰、통계폐수중적섬유화과립대소,선용취병희무방포PP25예처리,과려제거폐수중적섬유급대과립잡질;연후가산조절pH치지6,고공기양화30min,장은색체전람양화위양화태적고체전람석출,후조pH지4,유효삭약표면활성제적증용작용,실현전람정체재석,동시파배폐수중적효체물질,감경후속분리과정중대막적오염;처리과후적전람염색폐수경PE미려막과려,전람염료가전부절류.막공경0.2μm,소득전람함량체50.17%,출수재660nm파장하적흡광도위0.02,색도、탁도분별강저99.2%화99.5%,COD거제솔체80.6%.해공예회수전람염료적동시,폐수수질유흔대정도적개선,감경료폐수적후처리부담.
Dyeing wastewater samples from a jean-cloth manufacturing factory are treated in a laboratory scale with a purpose to reclaim indigo from the wastewater. The wastewater, with indigo concentration of 249.6mg/L, has been processed through pretreatment of filtration to remove fiber and other particles, and then crystallization of indigo blue and finally using micro-filtration to recover indigo dye. PE membrane micro-filtration, pore size of 0.2μm, used in the experiment can almost completely recover the dye with 50.17% of indigo crystals content in the filter cake. As to the wastewater, pollution parameters in terms of colority, turbidity and COD decrease by 99.2%, 99.5 and 80.6% respectively.