CAJ | 학술논문

文章采用自主研发的一体化平板膜靛蓝回收装置对印染废水进行了小试研究。此工艺采用投加H2O2氧化染液的方式析出靛蓝结晶并采用平板膜处理的方式不断浓缩靛蓝并将浓缩液回用于染色工段，保证了染料回用的效果。对装置中预处理单元，氧化单元，膜过滤单元等主．要参数进行了优化。研究结果表明．该装置氧化单元H2O2最佳投加量为15ml／L，最佳氧化pH=3；最佳过膜条件pH=4，连续曝气，开停比4：3；膜清洗采用水力冲洗后NaC10浸泡2h的方法，通量恢复近100％。在该最佳工况下，装置不仅能够高效回收靛蓝染料，回收效率达到99．5％，同时废水水质得到极大改善，SS平均去除93．9％，浊度下降100％，色度下降98．4％。
문장채용자주연발적일체화평판막전람회수장치대인염폐수진행료소시연구。차공예채용투가H2O2양화염액적방식석출전람결정병채용평판막처리적방식불단농축전람병장농축액회용우염색공단，보증료염료회용적효과。대장치중예처리단원，양화단원，막과려단원등주．요삼수진행료우화。연구결과표명．해장치양화단원H2O2최가투가량위15ml／L，최가양화pH=3；최가과막조건pH=4，련속폭기，개정비4：3；막청세채용수력충세후NaC10침포2h적방법，통량회복근100％。재해최가공황하，장치불부능구고효회수전람염료，회수효솔체도99．5％，동시폐수수질득도겁대개선，SS평균거제93．9％，탁도하강100％，색도하강98．4％。
With the purpose to reuse indigo from the dyeing wastewater through a series of experiments, a device of reclaiming indigo from wastewater was set up. The indigo was crystalized through the oxidation of H202 and then recovered by membrane reactor. The parameters related to pretreatment segment, oxidation segment and membrane filtration segment were optimized. The result shows that not only indigo could be reclaimed efficiently in the best condition, but also the dyeing wastewater quality is greatly improved. The suspended solids, turbidity and chromaticity decrease by 93.9%, 100% and 98.4% respectively.