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Phosphate removal efficiency and the removal rate constant by particle sizes of converter slag and conditions of the wastewater

전로슬래그의 입도 크기 및 폐수의 조건 변화에 따른 인산염 제거효율과 제거 속도상수에 관한 연구

  • Lee, Sang Ho (Dept. of Environmental Engineering, Sangmyung University) ;
  • Hwang, Jeong Jae (Dept. of Environmental Engineering, Sangmyung University)
  • Received : 2012.09.20
  • Accepted : 2012.12.05
  • Published : 2012.12.15

Abstract

The effluent quality of phosphorus is strengthened by the national standard to conserve water resources to lessen the eutrophication threat. The soluble phosphate in the wastewater effluent can be removed using the converter slag as solid waste produced through the steel making process. The experiments for removal efficiencies and removal constants were performed for this research with the artificial wastewater following several different conditions, particle size, phosphate concentration and initial pH. The correlation coefficients of Freundlich adsorption isothem were 0.9505 for $PS_A$, 0.9183 for $PS_B$, respectively. The removal efficiency was 87-94 % for $PS_A$ and 90-96 % for $PS_B$ respectively. The pH of the wastewater was elevated to pH 11.8 for the initial pH 8.5, phosphate removal efficiency was the highest as 84 % ~ 98 %. In case of 10 mg/L of the intial phosphate, the removal efficiency was 96 ~ 98 %. The more initial pH increases, the higher the reaction rate constant is.

Acknowledgement

Supported by : 상명대학교

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Cited by

  1. Phosphate removal by the continuous flow pilot plant with converter slag vol.28, pp.4, 2014, https://doi.org/10.11001/jksww.2014.28.4.453
  2. Comparison of Steel Slag and Activated Carbon for Phosphate Removal from Aqueous Solution by Adsorption vol.39, pp.5, 2017, https://doi.org/10.4491/KSEE.2017.39.5.303