期刊
CANADIAN JOURNAL OF CIVIL ENGINEERING
卷 37, 期 5, 页码 796-804出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/L10-044
关键词
microwave; sludge; hydrogen peroxide; advanced oxidation; dewaterability; settleability
资金
- Natural Science and Engineering Research Council of Canada (NSERC)
- UBC
A continuous flow mode of the microwave enhanced advanced oxidation process (MW/H2O2-AOP) was used for sludge treatment as opposed to a batch operation mode from past studies The effects of pre-microwave heating, microwave irradiation and post-microwave holding on organic matter solubilization were studied Pre-microwave heating did not improve the overall orthophosphate solubilization, hut helped in organic matter solubilization Nutrients and organic matter were found to have increased during the post-microwave holding period, indicating overall sludge solubilization can be more effective when maintained at a high temperature after treatment with the MW/H2O2-AOP. It was beneficial to operate a continuous mode of the MW/H2O2-AOP at a longer retention time for organic matter solubilization. and at a shorter retention time for orthophosphate solubilization Sludge settleability was greatly improved with the microwave treatment, with or without the addition of H2O2. The pre-heating of sludge before treatment with the microwave process by the means of heat exchange can be beneficial for the overall organic matter solubilization in the MW/H2O2-AOP.
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