Assessment and Optimization of Electrochemical Treatment of Typical Raw Water

Yıl 2014, Cilt: 4 Sayı: 1, 55 - 66, 31.03.2014

İsaiah Adesola Oke , Ezekiel Oluwaseun Fehıntola Olumuyiwa Adewale Obıjole Olutoyin Fasuyı̇- Enang Enoch Adedayo Adekunbı̇ Hammed Olawale Oloyede

Öz

This article provides a brief report on electrochemical treatment of selected raw water. Raw water samples were collected from selected villages in Katsina and Osun states, Nigeria. These water samples were subjected to electrochemical treatment using statistical methods (orthogonal technique). Selected pollutants were monitored in term of water quality. Operational factors were optimized using steepest ascent technique and environmental engineering application of the ndings was provided. The study revealed that factor with signi cant effects on ef cacy of electrochemical treatment plant process at 99 .5 %con dence levels are sedimentation time, treatment time, chlorine added, and turbidity. Model equation for ef cacy of the process based on the selected factors can be expressed as 60.68-2.26Tu+1.30Cld+1.10Ts+0.66St- 0.22Db. Operating cost of the process in US dollar (USD) can be expressed as 0.016 Es, while size of the required sedimentation tank per unit volume can be expressed in relation to optimum treatment time as 6.538 Rt . It was concluded that the system is cost effective, economical and effective in removing selected pollutants.

Anahtar Kelimeler

Statistical techniques, raw water, electrochemical treatment, sedimentation, pollutants

Arıtılmamış Suyun Elektrokimyasal Muamele ile Değerlendirilmesi ve Optimizasyonu

Öz

Bu makalede, arıtılmamış suyun elektrokimyasal muamale üzerine kısa bir bilgi vermektedir. Ham su
örnekleri Nijeya’nın Katsina ve Osun eyaletlerindeki seçilmiş köylerden toplanıldı. Bu su örnekleri istatistiksel
yöntemler kullanılarak elektrokimyasal muamelye tabii tutuldu ve su kalitesi bakımından değerlendirme yapıldı.
Operasyonel faktörler en dik çıkış tekniği kullanılarak optimize edildi ve basit çevresel mühendisliği uygulamaları
sağlandı. Çalışma, %99.5 güven seviyesinde elektrokimyasal proseslerin etkinliği üzerine sedimantasyon zamanı,
muamele süresi, eklenilen klor ve bulanıklık gibi faktörlerin önemli bir etkiye sahip olduğunu gösterdi. Seçilen
faktörler baz alındığında prosessin etkinliği için model eşitliği, 60.68-2.26Tu+1.30Cld+1.10Ts+0.66St- 0.22Db olarak
ifade edilebilir. Seçilmiş kirleticileri kaldırmada sistemin ekonomik ve tasarru u olduğu sonucuna varılmıştır. 

Anahtar Kelimeler

İstatistiksel teknik, ham su, elektrokimyasal muamele, sedimantasyon, kirleticiler

Kaynakça

• APHA, 1998. Standard method for the examination of water and wastewater, 20th edn, America Water Works Association and Water Pollution Control Federation, Washington DC.
• Chen, G., 2004. Electrochemical technologies in wastewater treatment separation. Puri cation Technologies, 38(1):11- 41.
• Chin, D.A., 2000. Water Resources Engineering, 1st edn. Prentice Hall, Englewood Cliffs.
• Drouichel, M., Lounicil, H., Marneril, N., Piron, D.L., Kharroune. M., 2001 Utilisation of factorial experiments for the UVIH2O2 process in a batch reactor. Water SA., 27:551-558.
• Gardiner, W.P., Gettinby, G., 1998.Experimental Design Techniques in Statistical Practice, 2nd Edn., Harwood Publishing, Chichester.
• Guttman, L., Wilks, S.S., Hunter,. J.S., 1971. Introductory Engineering Statistics. 2nd Edn, John Wiley and Sons Inc, New York.
• Khanniche, M.S., Morgan, P.G., Khanniche, K.N., Jobling, C.P., Khanniche, N., 2001. A novel electro -chemical process for water treatment.rev. energ. ren. Power Engineering. 63-67
• Lei, Y., Shen, Y., Chen, X., Jia, J., Wang, W., 2006. Preparation and application of Nano-TiO2 catalyst in dye electrochemical treatment,Water SA 32 (2): 206–210.
• Oke, I.A. Babatola, J.O., Adekunbi, E.A., Obijole, A.O., Fehintola, E.O., 2012. An Overview of electrochemical treatment processes in environmental engineering: previous studies on electrochemical treatment processes (1973-2004). In Water Treatment Processes, Editor: Kostas Demadis, Nova Science Publishers, Inc. New York.
• Oke, I.A. Oladepo, K.T., Fehintola, E.O., Adekaunbi, E.A., Obijole, A.O., Basil, O.N., Mohammed, H., 2012. An overview of electrochemical treatment processes in environmental engineering: modern studies on electrochemical treatment processes (2005- 2010) In Water Treatment Processes, Editor: Kostas Demadis, Nova Science Publishers, Inc. New York.
• Oke, I.A., 2009. Orthogonal experiments in the development of carbon –resin for chloride ions removal. Statistical Methodology. 6: 109–119.
• Oke, S.A., Awofeso, K.O., 2006. A factorial analysis experimentation of inappropriate waste disposal, Iran Journal of Environmental Health Sciences Engineering, 3 (2):123–132.
• Oke, I.A., 2007. Development and performance-testing of an electrochemical process on selected industrial wastewaters Unpublished Ph.D. Thesis, Department of Civil Engineering Obafemi Awolowo University, Ile-Ife, Nigeria.
• Polcaro, A.M., Palmas, S., Lallai, A., 2001. Sequential electrochemical/biological treatment for the removal of 2, 6-dichlorophenol from synthetic wastewater, Annales de Chimie 91 (4): 203–210.
• Polcaro, A.M., Mascia, M., Palmas, S., Vacca, A., 2002. Electrochemical oxidation of p-hydroxybenzoic and protocathecuic acids at a dimensional stable anode (DSA) in the presence of NaCl, Annales de Chimie 92 (10): 1015– 1023.
• Rajkumar, B., Palanivelu, K., Mohan, N., 2001. Electrochemical oxidation of resorcinol for wastewater treatment using Ti/TiO2- RuO2-IrO2 electrode, Journal of Environmental Sciences Health A Tox Hazard Substantial Environmental Engineering 36 (10):1997–2010.
• Steel, E.W., Mcghee, J.T., 1979: Water supply and sewerage, 3rd edn. McGraw Hill Book Company, Tokyo.
• Tebbutt, T.H.Y., 1991. Principles of Water Quality Control, 3rd edn. Pergamon Press, Oxford.
• Viessman, W., Hammer, M., 1993. Water Supply and Pollution Control. Harper Collins College Publishers, New York.
• Yoshida, K., Yoshida, S., Seki, Y., Takahashi, T., Ihara, I., Toyoda., K. 2007. Basic study of electrochemical treatment of ammonium nitrogen-containing wastewater using boron- doped diamond anode. Sei Technical Review, 65: 71-73.