Yan Lawrence K Q, Fung Ka Y, Ng Ka M
a Bioengineering Program , The Hong Kong University of Science and Technology , Clear Water Bay , Hong Kong.
b Department of Chemical and Biomolecular Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Hong Kong.
Environ Technol. 2018 Jun;39(11):1368-1375. doi: 10.1080/09593330.2017.1329354. Epub 2017 May 27.
In this study, the capability of using aerobic granules to undergo simultaneous anaerobic decolorization and aerobic aromatic amines degradation was demonstrated for azo dye wastewater treatment. An integrated acclimation-granulation process was devised, with Mordant Orange 1 as the model pollutant. Performance tests were carried out in a batch column reactor to evaluate the effect of various operating parameters. The optimal condition was to use 1.0-1.7 mm (1.51 ± 0.33 mm) granules, 5 g/L biomass, and 4000 mg/L organics as nutrient; and supplement the wastewater with 1 mg/L dissolved oxygen. This led to a dye mineralization of 61 ± 2%, an anaerobic dye removal of 88 ± 1%, and an aerobic aromatic amines removal of 70 ± 3% within 48 h. This study showed that simultaneous anaerobic/aerobic process by aerobic granules could be a possible alternative to the conventional activated sludge process.
在本研究中，证明了利用好氧颗粒同时进行厌氧脱色和好氧降解芳香胺以处理偶氮染料废水的能力。设计了一个以媒介橙1为模型污染物的综合驯化-造粒过程。在间歇式柱反应器中进行性能测试，以评估各种操作参数的影响。最佳条件是使用粒径为1.0 - 1.7 mm（1.51 ± 0.33 mm）的颗粒、5 g/L的生物质以及4000 mg/L的有机物作为营养物；并向废水中补充1 mg/L的溶解氧。这使得在48小时内染料矿化率达到61 ± 2%，厌氧染料去除率达到88 ± 1%，好氧芳香胺去除率达到70 ± 3%。本研究表明，好氧颗粒的同时厌氧/好氧过程可能是传统活性污泥法的一种替代方法。
