[臭氧氧化处理后二级出水的有机生物降解性研究]

[Research on the organic biodegradability of secondary effluent treated by ozonation].

作者信息

Yang An-ming, Chang Jiang, Gan Yi-ping, Peng Yong-zhen, Zhang Shu-jun, Meng Chun-lin

机构信息

Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100124, China.

出版信息

Huan Jing Ke Xue. 2010 Feb;31(2):363-7.

PMID:20391703

Abstract

The secondary effluent of three WWTPs was treated by ozonation to investigate organic biodegradability enhancement. The bulk experimental method was used. Ozone adding dosage was controlled to be 2, 4, 6, 8, 10 mg/L by adjusting the adding time. Results showed, UV254 and SUVA(UV254/DOC)decreased with the increasing of the ozone dosage. When ozone adding dosage was 6 mg/L, UV254 and SUVA decreased about 54.4% and 56.6% respectively; while BOD5/COD, BDOC and BDOC/DOC were improved above 30%, 360% and 360% respectively. It could be concluded that suitable ozonation could improve the biodegradation of the organic substances in the secondary effluent. The organic substance was analyzed by the excitation-emission matrix (EEM) to investigate the variation regularity of organic matter changes of the ozoned and non-ozoned secondary effluent. The main organic substances of the secondary effluent in the plant were aromatic protein like substances and humic substances, ozone could significantly remove these types of organic substance.

摘要

对三个污水处理厂的二级出水进行臭氧氧化处理，以研究其对有机生物降解性的提升效果。采用批量实验法。通过调整添加时间将臭氧投加量控制为2、4、6、8、10mg/L。结果表明，UV254和SUVA（UV254/DOC）随臭氧投加量的增加而降低。当臭氧投加量为6mg/L时，UV254和SUVA分别降低了约54.4%和56.6%；而BOD5/COD、BDOC和BDOC/DOC分别提高了30%以上、360%和360%。可以得出结论，适当的臭氧氧化可以提高二级出水中有机物的生物降解性。采用激发-发射矩阵（EEM）对有机物进行分析，以研究臭氧氧化和未臭氧氧化的二级出水有机物变化的规律。该厂二级出水的主要有机物为类芳香族蛋白质物质和腐殖质物质，臭氧可显著去除这些类型的有机物。