Study on Treating Dyeing and Finishing Wastewater with Combined Process of Anaerobic-PAC-SMBR

2008 2nd International Conference on Bioinformatics and Biomedical Engineering Pub Date : 2008-05-16 DOI:10.1109/ICBBE.2008.1047

Hang Gao, Songmao Chu, Songtian Li, Wei Ma

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引用次数: 4

Abstract

Submerged membrane bioreactor was used to investigate dyeing and finishing wastewater. Considering its unique characteristics, anaerobic process was carried out before membrane bioreactor, and powdered activated carbon was added to the reactor in order to change the property of the mixed liquor. Combination of the three processes above constituted combined process of Anaerobic-PAC-SMBR, by which the reduction of pollution indexes in wastewater during each treatment unit and the property of membrane fouling in the system were studied. The results showed that under the optimum conditions the CODCr content in effluent water was approximately 120 mg/g, removal rate of ammonia nitrogen was 93%, the chrominance was lower than 5 times, the turbidity was less than 30 FTU, and the suspended substance was zero. Addition of powdered activated carbon effectively altered the characteristic of the mixed liquor, and alleviated the membrane fouling, so it facilitated the cleaning of the membrane and the recover of the membrane flux. Combined process of Anaerobic- PAC-SMBR exhibited excellent treatment effect and stability to dyeing and finishing wastewater.

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厌氧- pac - smbr联合工艺处理印染废水的研究

采用浸没式膜生物反应器对印染废水进行了研究。考虑到膜生物反应器的独特特性，在膜生物反应器前进行厌氧处理，并在反应器中添加粉状活性炭以改变混合液的性质。以上三种工艺组合构成厌氧- pac - smbr组合工艺，研究各处理单元对废水污染指标的降低情况及系统膜污染特性。结果表明，在最佳工艺条件下，出水CODCr含量约为120 mg/g，氨氮去除率为93%，色度小于5倍，浊度小于30 FTU，悬浮物为零。粉状活性炭的加入有效地改变了混合液的特性，减轻了膜污染，有利于膜的清洗和膜通量的回收。厌氧- PAC-SMBR联合工艺对印染废水具有良好的处理效果和稳定性。

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2008 2nd International Conference on Bioinformatics and Biomedical Engineering

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