Elazığ evsel atıksu tesisindeki fosfor formlarının belirlenmesi

Bu çalışmada; Elazığ Evsel Atıksu Arıtma Tesisindeki fosfor formları tayin edilerek, fosfor giderimi yönünde yapılabilecek iyileştirmeler tespit edilmiştir. Bu amaçla, tesisin girişinden, ön çökeltme havuzu çıkışından ve tesis çıkından numuneler alınmıştır. Yapılan deney sonuçlarından, partiküler fosforun % 80'ninin ön çökeltme havuzlarında giderildiği bulunmuştur. Ancak, çoğunluğu fosfattan ibaret olan çözünmüş fosforun % 43'nün mikroorganizmalar tarafından asimile edildiği ve çıkıştaki fosfor konsantrasyonunun (6 mg/1), deşarj standartlarını (1 mg/1) sağlamadığı tespit edilmiştir. Elazığ Evsel Atıksu Arıtma Tesisinin mevcut durumu göz önünde bulundurularak, fosfor giderimi için kimyasal çökelmeye dayalı bir ön veya son arıtma prosesi tavsiye edilmiştir.

Removal and determination of phosphorus forms in Elazığ domestic wastewater treatment plant

In this study, the phosphorus forms in Elazığ Domesticc wastewater Treatment Plant were determineted and the phosphorus removal strategy was developed. Samples were taken from influent and effluent of plant and from effluent of primary clarifier. Results of experiment shows that 80% of particulate phosphorus are removed in primary clarifiers. But, 43% of soluble phosphorus, which mostly consisting of phosphate, are removed by assimilation. Effluent phosphorus concentration (6 mg/1) did not supply discharge standards (1 mg/1). A pre and post treatment process based on chemical precipitation for phosphorus removal by taking into consideration present case of Elazığ Wastewater Treatment Plant is suggested.

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1. Rybicki, S. (1997). Phosphorus removal from wastewater. A literature rewiev. Report 1. Stockholm, 106s.
2. Bitton, G. (1994). Wastewater Microbiology, (Ed) Mitchel, Wiley-Lys, New York, US.
3. Harper, D. (1992). Eutrophication of freshwaters, principles, problems and restoration. Chapman and Hall, London.
4. Lee, G.F., Rast, W. and Jones, R.A. (1978). Eutrophication of water bodies: Insight for an age-old problem. Environmental Science and Technology, 12, 900-908.
5. Tchobanoglous, G., Burton, F.L. (1991). Wastewater Engineering: Treatment, Disposal and Reuse, McGraw-Hill, New York.
6. Yeoman, S., Stephenson, T., Lester, J.N. and Perry, R. (1988). The removal of phosphorus during wastewater treatment. Environmental Pollution, 49, 183-233.
7. APHA. (1989). Standart Methods for the Examination of Water and Wastewater, 17th Edition, Washington, D.C.
8. Metcalf and Eddy (1991). Wastewater Engineering: Treatment, Disposal and Reuse. McGraw-Hill, New York.
9. Riding, J.T., Eliot, W.R. and Sherrard, J.H. (1979). Activated sludge phosphorus removal mechanism. Journal Water Pollution Control Federation, 51(5), 1040-1053.
10. Tunç, M.S. (2003). Elazığ kenti atıksu arıtma tesisi işletme parametrelerinin değerlendirilmesi. Yüksek Lisans Tezi, Fırat Üniversitesi Fen Bilimleri Enstitüsü, 95s.
11. Duenas, J.F., Alonso, J.R. and Ferrer, A.S. (2003). Characterization of phosphorus forms in wastewater treatment plants. Journal of Hazardous Materials B97, 193-205.