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Updated: Aug 22, 2026

Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
Published on: October 31, 2019
[Organic pollutants biodegradation in micro-polluted water enhanced by ultrasonic]
Hong Liu1, Yun-hua He, Shan-li Zhang
1State Key Joint Laboratory of Environmental Simulation and Pollution Control, Institute of Environmental Sciences, Beijing Normal University, Beijing 100875, China. LH64@sina.com
Abstract:
The effect of ultrasonic on the biotreatment of micro-polluted source water in a membrane bioreactor was studied through contrast experiments between the membrane bioreactor with and without ultrasonic. The results showed that ultrasonic at proper intensity could improve biological activity, increase organic load of the bioreactor, and enhance the removal of organic matters. The study of TTC-DHA of the bacteria and apparent molecular size distribution (AMSD) of organic compounds in the influent and effluent in the contrast experiments further proved that ultrasonic enhanced the bioactivity of the membrane bioreactor. The experiments with ultrasonic at different powers showed that ultrasonic at 10 W enhanced bioactivity most effectively. The effect of ultrasonic changed with running time. It was found that ultrasonic effect could be maintained for 24 hours, so the interval of ultrasonic treatment could be set at 24 hours. The mechanism of biological activity enhancement by ultrasonic was also investigated.
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