Effect and Control of Suspended Solids at the Blast Furnaces

Abstract:

In this study, investigations were carried out to find the best possible way of lowering the concentration of suspended solids at the blast furnace gas scrubbing systems which have long been a problem in steel making industries. The analyses of the experimental results showed that the Bulab 5615 that is currently being used is the best possible chemical polymer. At very low concentration the chemical has shown its ability to reduce suspended solids to desired levels. The three other chemicals used required a much higher dosing rate. Experiment was also conducted on controlling the conductivity and to solve the issues of high COD, ammonia and phenols using a pilot bio-plant and reverse osmosis. This work will make the adhering to the policy implemented in 2006 of zero effluent discharge of the Department of Water and Forestry and contribution towards saving our water.

• Periodical: Applied Mechanics and Materials (Volumes 260-261)
• Pages: 954-960
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.260-261.954
• Online since: December 2012
• Authors: Ayo Samuel Afolabi, Kazeem Oladele Sanusi, Ambali Saka Abdulkareem, Bada Samson Oluwaseyi
• Keywords: Blast Furnace, Chemical Oxygen Demand (COD), Conductivity, Effluent, Gas Scrubbing, Steel Making

References

[1] F. C. McMichael, E. D. Maruhnich, W. R. Samples, Recycle water quality from a blast furnace. Water, Pollution Control Federation , 43 (4), (1971) 595-603.

[2] I. Z. Yildirim, M. Prezzi, Chemical, mineralogical, and morphological properties of steel slag. Adv. Civil Eng. 13, (2011) 13.

DOI: 10.1155/2011/463638

[3] 1. Schoenberger, Best available techniques reference document on the production of iron and steel. Publications of EC: European Commission, Joint Research Centre, IPTS, European IPPC Bureau. (2001).

[4] D. Brandt, J. C. Warner, Metallurgy Fundamentals (3rd ed. ). Goodheart-Willcox, Tinley Park, Ill, USA, (2005).

[5] E. M. (EMT), Iron and steel process, (July 2008). http: /www. energymanagertraining. com . (Accessed 14 March 2012).

[6] A. I. (AISI), How Steel is Made. Retrieved from http: /www. steel. org, (2011). (Accessed 14 March 2012).

[7] S. Seetharaman, Fundamentals of Metallurgy. Boca Raton, Fla, USA: Woodhead Publishing and CRC Press, (2005).

[8] G. S, Kumar, D. Basu, Y. -T. Hung, L. K. Wang, Handbook of Advanced Industrial and Hazardous Wastes Treatment. CRC Press, (2009).

[9] G. P. Water, Water and Process Technologies (2011). Retrieved from www. gewater. com. (Accessed 18 March 2012).

[10] F. Piero, Characterization of industrial wastewaters. New Jersey Institute of Technology, (2011).

[11] S. Lisnunt, G. L. Saengkiettiyut, Effects of sodium phosphate and sodium sulphate on corrosion resistance of AISA of 316 Stainless Steel in 3. 5wt% sodium chloride solution. J. Metals, Matls Min. , 14 (2004) 33-38.

[12] C. -H. Hsu, F. Mansfeld, T. Wood, Inhibiting mild steel corrosion from sulfate-reducing bacteria using antimicrobial-producing biofilms in three-mileIsland process water. Application Microbiol Biotechnol. 64(2), (2004). 275-283.

DOI: 10.1007/s00253-003-1403-7

[13] P. A. Terry, Application of ozone and oxygen to reduce chemical oxygen demand and hydrogen sulfide from a recovered paper processing plant. Inter. J. Chem. Eng. 51 (2010) 6.

DOI: 10.1155/2010/250235

[14] P. Vallejo, A. Izquierdo-reina, M. D. Castro, Flow injection determination of chemical oxygen demand in leaching liquid, Analyst. 124(8) (1999), 1261-1264.

DOI: 10.1039/a902443c

[15] I. D. Resources, Water quality standards review. Chloride, Sulfate and Total Dissolved Solids , (2009, February 9) 1-79.

[16] N. B. Chang, F. Hossain, M. Wanielista, Filter media for nutrient removal in natural systems and built environments: 1- Prevoius trend and perspectives. Environ. Eng. Sci., 27 (9), (2010) 1-18.

DOI: 10.1089/ees.2009.0415

[17] E. Canada, Environmental Code of Practice for Integrated Steel Mills. (March 2001) CEPA 1999 code of Practice.

[18] D. Nicol, M. Shaw, D. Ledward, Hydrogen sulfide production by bacteria and sulfmyolobin formation in pre-packed chilled beef, Appld. Microbiology 19 (1970) 937-939.

DOI: 10.1128/am.19.6.937-939.1970

[19] G. Moussavi, K. Naddaf, A. Mesdaghinia, A. Deshusses, The removal of H2S from process air by diffusion into activated sludge. Environ. Technol. 28, (2007). 987-993.

DOI: 10.1080/09593332808618856

[20] M. A. Awan, Agricultural and food chemistry, institute of environmental science and engineering (IESE), National University of Sciences and Technology (NUST). Electric Journal of Environmental, (2004) 625-628.