[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.9713/kcer.2017.55.6.816

Treatment of Phosphorus and Suspended Solid in Reject Water of Sewage Using an Integrated Slow Mixing/Sedimentation and Net Fit Fiber Filtration System

Kim, Jeongsook (Division of Energy & Bio Engineering, Dongseo University)
Kim, Min-Ho (Division of Energy & Bio Engineering, Dongseo University)
Kim, Mi-Ran (KEEP Co., LTD.)
Jang, Jeong-Gook (Division of Energy & Bio Engineering, Dongseo University)

Publication Information

Korean Chemical Engineering Research / v.55, no.6, 2017 , pp. 816-821 More about this Journal

Abstract

An integrated slow mixing/sedimentation and net fit fiber filtration system has been developed to reduce the high concentrations of suspended solid (SS) and total phosphorus (T-P) in the reject water from sewage/wastewater. A filtration device used in this experiment consists of coagulation, in-line mixing, air injection, slow mixing/sedimentation, and filtration processes. The performance test using this device was carried out with six operational modes for reject water from sewage treatment plant. Experimental conditions used were 16.7, 33.3, 41.7 and 50.0 ton/day of flow rate and 2~4 of Al/P molar ratio. By injection of coagulant in each operational mode, the high removal efficiencies of SS and T-P were obtained, but continuous operation time was decreased to 7.8~11.4 min in most modes. However, when the Mode 5 of the developed filtration device was applied, the continuous operation time was maintained up to 88.2 min. Also, it was found that the continuous operation time in the Mode 5 using the developed system was increased from 8 to 11.3 times longer than those in other modes. Backwashing flow rate was also very low at 5.4% of total filtered water. Therefore, it can be concluded that the Mode 5 of the developed filtration system was the most efficient treatment method for the removal of high concentrations of SS and T-P.

Keywords

Slow mixing/precipitation; Net fit fiber filtration; T-P removal; Al/P molar ratio; Backwashing rate;

Citations & Related Records

Times Cited By KSCI : 3 (Citation Analysis)

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