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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.3
- 수록면
- 12 - 18 (7page)
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Struvite precipitation has been proven to be an effective method in removing and recovering ammonia nitrogen (N) and phosphate phosphorus (P) from wastewater. In this study, effects of pH, molar ratios and pre-treatment of effluent of anaerobically digested swine wastewater were investigated to improve struvite crystallization. The magnesium : ammonium : phosphate ratio of 1.2 : 1.0 : 1.0 was found to be optimal, yet the molar ratio in the wastewater was 1 : 74.9 : 1.8. From the analysis, the optimum pH was between 8.0 and 9.0 for maximal phosphate P release and from 8.0 to 10.0 for maximal ammonia N and phosphate P removal from real wastewater. Analysis from Visual MINTEQ predicted the pH range of 7-11 for ammonia N and phosphate P removal and recovery as struvite. For pre-treatment, microwave pre-treatment was ineffective for phosphate P release but ultrasound pre-treatment showed up to 77.4% phosphate P release at 1,000 kJ/L of energy dose. Precipitates analysis showed that phosphorus and magnesium in the collected precipitate had almost same values as theoretical values, but the ammonia content was less than the theoretical value.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
Acknowledgements
References
참고문헌 (31)
참고문헌 신청
Seyhan D. Country-scale phosphorus balancing as a base for resources conservation. Resour. Conserv. Recy. 2009;53:698-709.
Xu H, He P, Gu W, Wang G, Shao L. Recovery of phosphorus as struvite from sewage sludge ash. J. Environ. Sci. 2012;24: 1533-1538.
United States Geological Survey (USGS). Phosphate rock, mineral commodity summaries. US Department of the Interior, US Geological Survey, US Government Printing Office. Washington D.C.: USA; 1997. p. 124-125.
Choi JW, Lee SY, Lee SH, et al. Comparison of surface-modified adsorbents for phosphate removal in water. Water Air Soil Poll. 2012;223:2881-2890.
Jutidamrongphan W, Park KY, Dockko S, Choi JW, Lee SH. High removal of phosphate from wastewater using silica sulfate. Environ. Chem. Lett. 2012;10:21-28.
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UCI(KEPA) : I410-ECN-0101-2017-539-002227022