ENG  Vol.7 No.10 , October 2015
Performance of a Large-Scale Medical Waste Incinerator in a Referral Hospital
Abstract
The aim of the study was to analyze the performance of large scale incinerator installed in a referral hospital. The study involved weighing and loading infectious waste of different composition (sharps and other waste), recording temperatures in the primary and secondary chamber with time, fuel used and collecting and weighing the bottom ash for 65 days. The analysis shows that the incinerator on average uses 362 L/day (45 L/h) to incinerate 945 kg of medical waste (40.8 kg/day of sharps waste and 904 kg/day of other waste), generating 51.2 kg of ash daily. The observed fuel consumption rate was too high necessitating corrective action. The average weight reduction was 94.6%. The study shows that the average sharps waste composition for medical waste incinerated was 4.3% and other waste was 95.7%. The incinerator capacity ranged between 100 and 130 kg/h. The fuel effectiveness ranged between 2.0 and 3.0 liters of diesel per kg of waste incinerated. The fuel effectiveness increased linearly with total waste incinerated and incinerator capacity, respectively, depending on the fuel consumption rate.

Cite this paper
Matee, V. and Manyele, S. (2015) Performance of a Large-Scale Medical Waste Incinerator in a Referral Hospital. Engineering, 7, 676-690. doi: 10.4236/eng.2015.710059.
References

[1]   MNH-WMPG, Waste Management Procedure and Guideline, Muhimbili National Hospital (MNH), 2004.

[2]   Gidarakos, E., Petrantonaki, M., Anastasiadou, K. and Schramm, W. (2009) Characterization and Hazard Evaluation of Bottom Ash Produced from Incinerated Hospital Waste. Journal of Hazardous Materials, 172, 935-942.
http://dx.doi.org/10.1016/j.jhazmat.2009.07.080

[3]   Manyele, S.V. (2004) Effects of Improper Hospital Waste Management or Occupational Health and Safety. African Newsletter on Occupational Health and Safety, 14, 30-33.

[4]   Wang, Q. (2004) Aspects of Pretreated Hospital Waste Biodeg-Radation in Landfills. Proceedings of 7th International Landfill Symposium, Cagliari, 59-66.

[5]   Wanasolo, W., Manyele, S.V. and Makunza, J. (2013) A Kinetic Study of Anaerobic Biodegradation of Food and Fruit Residues during Biogas Generation Using Initial Rate Method. Engineering, 5, 577-586.
http://dx.doi.org/10.4236/eng.2013.57070

[6]   Mesfin, K.D., Kassahun, A.G., Andamlak, G.A. and Zemedu, M.T. (2013) Assessment of the Health Care Waste Generation Rates and Its Management System in Hospitals of Addis Ababa, Ethiopia. BioMedical Central Public Health, 13, 1-9.

[7]   Manyele, S.V. and Mujuni, C.M. (2010) Current Status of Sharps Waste Management in Lower Level Health Facilities in Tanzania. Tanzania Health Research Journal, 12, 257-264.
http://dx.doi.org/10.4314/thrb.v12i4.53362

[8]   Powell, F. (1987) Air Pollutant Emissions from the Incineration of Hospital Wastes: The Alberta Experience. Journal of the Air Pollution Control Association, 37, 836-839.
http://dx.doi.org/10.1080/08940630.1987.10466278

[9]   Singh, S. and Prakash, V. (2007) Toxic Environmental Releases from Medical Waste Incineration. Environmental Monitoring, 132, 67-81.
http://dx.doi.org/10.1007/s10661-006-9503-3

[10]   Santoleri, J.J. (2009) Design and Operating Problems of Hazardous Waste Incinerators. Environmental Progress, 4, 246-251.
http://dx.doi.org/10.1002/ep.670040408

[11]   Walter, R. (2002) Combustion and Incineration Processes. 3rd Edition, Marcel Dekker, New York.

[12]   Manyele, S.V. and Kagonji, I.S. (2012) Analysis of Medical Waste Incinerator Performance Based on Fuel Consumption and Incineration Cycle Times. Engineering, 4, 625-635.
http://dx.doi.org/10.4236/eng.2012.410080

[13]   Sharifah, S.A.K., Abidin, H.Z., Sulaiman, M.R., Khoo, K.H. and Ali, H. (2008) Combustion Characteristics of Malaysian Municipal Solid Waste and Predictions of Air Flow in Rotary Kiln Incinerator. Journal of Material Cycles and Waste Management, 10, 116-123.
http://dx.doi.org/10.1007/s10163-008-0207-3

[14]   Min, B.-Y., Lee, Y., Yun, G.-S., Lee, K.-W. and Moon, J.-K. (2015) Volume Reduction of Radioactive Combustible Waste with Oxygen Enriched Incinerator. Annals of Nuclear Energy, 80, 47-51.
http://dx.doi.org/10.1016/j.anucene.2015.01.023

[15]   Manyele, S.V. and Kagonji, I.S. (2012) Assessment of Incineration Process Performance in District Hospital Using Statistical Analysis. Engineering, 4, 421-434.
http://dx.doi.org/10.4236/eng.2012.48056

[16]   Hamoda, H.M., Tomi, H.N. and Bahman, Q.Y. (2005) Variations in Hospital Waste Quantities and Generation Rates. Journal of Environmental Science and Health, 40, 467-476.
http://dx.doi.org/10.1081/ESE-200045650

[17]   Engdaw, D., Sulaiman, H. and Leta, S. (2009) Determining the Generation Rate and Composition of Solid Health Care Waste at Gondar University Hospital. Ethiopian Journal of Health and Biomedical Sciences, 1, 17-21.

[18]   Longe, E.O. and Williams, A. (2006) A Preliminary Study of Medical Waste Management in Lagos Metropolis, Nigeria. Iranian Journal of Environmental Health Science & Engineering, 3, 133-139.

[19]   Manyele, S.V. and Anicetus, H. (2006) Management of Medical Waste in Tanzanian Hospitals. Tanzania Health Research Bulletin, 8, 177-182.

[20]   Sawalem, M., Selic, E. and Herbell, J.D. (2009) Hospital Waste Management in Libya: A Case Study. Waste Management, 29, 1370-1375.
http://dx.doi.org/10.1016/j.wasman.2008.08.028

[21]   Nemathaga, F., Maringa, S. and Chimuka, L. (2008) Hospital Solid Waste Management Practices in Limpopo Province, South Africa: A Case Study of two Hospitals. Waste Management, 28, 1236-1245.
http://dx.doi.org/10.1016/j.wasman.2007.03.033

[22]   Idowu, I., Alo, B., Atherton, W. and Al Khaddar, R. (2013) Profile of Medical Waste Management in Two Healthcare Facilities in Lagos, Nigeria: A Case Study. Waste Management and Research, 31, 494-501.
http://dx.doi.org/10.1177/0734242X13479429

[23]   Manyele, S.V. and Lyasenga, T.J. (2010) Factors Affecting Medical Waste Management in Low-Level Health Facilities in Tanzania. African Journal of Environmental Science and Technology, 4, 304-318.

[24]   Kagonji, I.S. and Manyele, S.V. (2010) Analysis of the Measured Medical Waste Generation at Amana and Ligula Hospitals Using Statistical Methods. African Journal of Environmental Science and Technology (AJEST), 5, 815-833.

[25]   MoHSW (2006) National Infection Prevention and Control Guidelines for Healthcare Services in Tanzania. Dar-es Salaam.

[26]   Kagonji, I.S., Manyele, S.V. and Mrisho, J. (2011) Assessment of a Double Chamber Incinerator Performance Based on Ash Characteristics. Engineering, 3, 1045-1053.
http://dx.doi.org/10.4236/eng.2011.310130

[27]   Zhao, L.J., Zhang, F.-S., Chen, M.J., Liu, Z.G. and Wu, J.Z. (2010) Typical Pollutants in Bottom Ashes from a Typical Medical Waste Incinerator. Journal of Hazardous Materials, 173, 181-185.
http://dx.doi.org/10.1016/j.jhazmat.2009.08.066

[28]   Patwary, M.A., O’Hare, W.T., Street, G., Maudood Elahi, K., Hossain, S.S. and Sarker, M.H. (2009) Quantitative Assessment of Medical Waste Generation in the Capital City of Bangladesh. Waste Management and Research, 29, 2392- 2397.
http://dx.doi.org/10.1016/j.wasman.2009.03.021

 
 
Top