蒽醌-2,6-二磺酸(AQDS)强化厌氧降解直接蓝15  

Enhanced Anaerobic Degradation of Direct Blue 15 by Anthraquinone-2,6-Disulfonate(AQDS)

作　　者：刘爱科 顾梦琪 魏书斋 吴光学 LIU Aike;GU Mengqi;WEI Shuzhai;WU Guangxue(Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen518055, China;Shandong Water Conservancy Group Co., Ltd., Jinan250014, China)

机构地区：[1]清华大学深圳研究生院深圳市环境微生物利用与安全控制重点实验室,广东深圳518055 [2]山东水总有限公司,山东济南250014

出　　处：《净水技术》2019年第2期63-68,共6页Water Purification Technology

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07205-01);深圳市科技创新委员会战略性新兴产业和未来产业基础研究学科布局(JCYJ20170817161106801)

摘　　要：研究蒽醌-2,6-二磺酸(AQDS)强化厌氧降解典型偶氮染料直接蓝15,重点考察AQDS浓度、共基质和厌氧反应阶段对直接蓝15厌氧去除特性的影响。AQDS能够有效促进直接蓝15厌氧降解,其最佳浓度约为1 mmol/L。当以淀粉、胰蛋白胨或淀粉/胰蛋白胨作为共代谢基质时,胰蛋白胨条件下直接蓝15的色度去除效果与速率最佳。水解酸化和全程厌氧反应均能有效去除直接蓝15,说明水解酸化反应是厌氧降解直接蓝15的主要反应过程。因此,将厌氧反应控制在水解酸化阶段即能实现染料的有效降解。Enhanced anaerobic degradation of typical azo dye of direct blue 15 by anthraquinone-2,6-disulfonate (AQDS) was investigated, with focusing on the effects of AQDS concentrations, co-metabolic substrates and anaerobic stages. AQDS promoted anaerobic decolourization of direct blue 15, with the optimized dosage concentration of approximately (1 mmol/L). Among co-metabolic substrates of starch, tryptone and starch/tryptone, both decolourization efficiency and degradation rate of direct blue 15 were the highest with tryptone as co-metabolic substance. Under conditions of hydrolysis/acidification or the whole anaerobic process, decolourization of direct blue 15 were both efficient, indicating that hydrolysis/acidification played an important role in the decolorization of direct blue 15. Therefore, for decolorization of dye wastewater, controlling anaerobic reaction at the hydrolysis/acidification stage could be adequate.

关 键 词：直接蓝15 厌氧脱色 蒽醌-2 6-二磺酸 共代谢基质 水解酸化 强化降解 

分 类 号：X709[环境科学与工程—环境工程]