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http://dx.doi.org/10.5762/KAIS.2011.12.7.3341

Characteristics of wastewater treatment of sewage mixed with industrial wastewater  

Ahn, June-Shu (Department of Environmental Engineering, Daejin University)
Park, Wook-Keun (Department of Environmental Engineering, Daejin University)
Cho, Jung-Ho (Department of Chemical Engineering, Kongju National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.7, 2011 , pp. 3341-3352 More about this Journal
Abstract
In this study, characteristics of wastewater treatment of sewage intermittently mixed with industrial wastewater is examined by investigating the operational status of each unit operation and measuring water quality. The bioreactor operating condition was measured for MLSS concentration 2,000~3,000 mg/L, HRT 5.3~16.3 hour, SRT 2.8~66.6 day, and SVI frequently showed the value above 200 which was higher than the optimal range of 50~150. It is thought that the sludge is not in suitable condition for sedimentation caused by the incoming industrial wastewater. When industrial wastewater is come into the system, MLDO inside of bioreactor rapidly increased, rate of nitrification is steeply decreased, and Pin floc. is spilled in the secondary clarifier. In the observance of microorganism showed that various bacterial floc. and ciliata were found as well as actinomycetes and filamentous bacteria(Sphaeotilus) which is known to cause bulking. Efficiency of each unit operation was fairly good in average. However, efficiency of the bioreactor treatment showed high fluctuation by unstable operating condition by intermittently incoming industrial wastewater.
Keywords
Wastewater Treatment; Sewage mixed with Industrial Wastewater;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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