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Published on: December 25, 2015
Aerobic granulation for 2,4-dichlorophenol biodegradation in a sequencing batch reactor
Shu-Guang Wang1, Xian-Wei Liu, Hua-Yong Zhang
1School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
Chemosphere
|July 10, 2007
Summary
Aerobic granules efficiently removed 2,4-dichlorophenol (2,4-DCP) from wastewater. This method, using glucose co-substrate, achieved high removal rates and shows promise for treating inhibitory industrial pollutants.
Area of Science:
- Environmental Science
- Biotechnology
- Chemical Engineering
Background:
- 2,4-dichlorophenol (2,4-DCP) is a persistent pollutant in industrial wastewater.
- Biological treatment methods are sought for efficient removal of chlorophenols.
Purpose of the Study:
- To develop aerobic granules for degrading 2,4-DCP.
- To investigate the granulation process and biodegradation kinetics.
Main Methods:
- Utilized a sequencing batch reactor (SBR).
- Employed glucose as a co-substrate.
- Implemented step increases in influent 2,4-DCP concentration.
Main Results:
- Achieved stable aerobic granules (1-2mm diameter) within 39 days.
- Attained high removal efficiencies: 94% for 2,4-DCP and 95% for chemical oxygen demand (COD).
- Observed 2,4-DCP biodegradation rates followed the Haldane model, peaking at 39.6 mg/g VSS/h.
Conclusions:
- Aerobic granules are effective for 2,4-DCP biodegradation.
- This technology shows potential for treating industrial wastewater containing inhibitory chemicals.
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