Small Scale Pilot Plant Thermal Dryer for Sewage Sludge Dewatering System – A Preliminary Study

Abstract:

Malaysia expected to face serious problem in sewage sludge disposal in the next few years if this problem is not properly manage and well treated. The common way of sludge disposal in Malaysia is to dispose it on the land, by landfill disposal. However, most of the landfill has been closed since reaching it capacity. This product required innovation and advance solution for treatment and disposal since the production of sewage sludge rapidly increasing and the available solution for their disposal is out dated .One of the ideal solution to dispose the sludge is by converting it into useful energy in the form of solid fuel such as pallet and briquette and burn it as a solid fuel to generate power. However, the main problem faced is it contains high moisture content which is more than 90% of moisture content. In order to convert it into useful energy, the moisture content of the sludge need to be reduced into acceptable level which is below 20% . One of the effective methods to remove the moisture content is by using a thermal dryer. The preliminary results from this study found that the thermal dryer produced 63.32kg/h of dried sewage sludge with moisture content less than 20% . The production rate of this dryer shows positive result and with continuous production, this dryer cable to dry tons of wet sewage sludge.

• Periodical: Applied Mechanics and Materials (Volume 695)
• Pages: 336-339
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.695.336
• Online since: November 2014
• Authors: Mohd Safuan Zakaria, Suhaimi Hassan, M. Faizairi
• Keywords: Drying, Energy, Moisture Content, Sewage Sludge, Thermal Dryer

References

[1] Z. Alam, S. A. Muyibi, and R. Wahid, Statistical optimization of process conditions for cellulase production by liquid state bioconversion of domestic wastewater sludge, Bioresour. Technol., vol. 99, 2008, p.4709–4716.

DOI: 10.1016/j.biortech.2007.09.072

[2] A. H. Molla, A potential resource for bioconversion of domestic wastewater sludge, Bioresour. Technol., vol. 85, 2002, p.263–272.

[3] F. Salleh, R. Samsuddin, and M. Husin, Bio-Fuel Source from Combination Feed of Sewage Sludge and Rice Waste, Int. Conf. Environ. Sci. Eng., vol. 8, 2011, p.68–72.

[4] P. Planquart, G. Bonin, A. Prone, and C. Massiani, Distribution , movement and plant availability of trace metals in soils amended with sewage sludge composts : application to low metal loadings, Sci. Total Environ., no. 241, 1999, p.161–179.

DOI: 10.1016/s0048-9697(99)00338-1

[5] M. Strazar and O. Burica, Total metal concentrations and partitioning of Cd , Cr , Cu , Fe , Ni and Zn in sewage sludge Janez ˇ, Sci. Total Environ., vol. 250, 2000, p.9–19.

DOI: 10.1016/s0048-9697(99)00478-7

[6] J. Jiang, X. Du, and S. Yang, Analysis of the combustion of sewage sludge-derived fuel by a thermogravimetric method in China, Waste Manag., vol. 30, no. 7, 2010, p.1407–1413.

DOI: 10.1016/j.wasman.2010.03.009

[7] A. H. A. M.S. Aris, Characterization of Malaysian Domestic Sewage Sludge for Conversion into Fuels for Energy Recovery Plants, Int. Sysposium Environ. Friendly Energies Electr. Appl., no. November, 2010, p.1–8.

DOI: 10.1109/natpc.2011.6136402

[8] M. F. M. Nor, S. Hassan, and K. Mariapan, Sludge Calorific Value Mapping and Potential Energy Recovery for Malaysia, utpedia, 2013, no. iv.

[9] S. Werle and R. K. Wilk, A review of methods for the thermal utilization of sewage sludge : The Polish perspective, Renew. Energy, vol. 35, no. 9, 2010, p.1914–(1919).

DOI: 10.1016/j.renene.2010.01.019

[10] N. M. Mokhtar, R. Omar, M. A. M. Salleh, A. Idris, characterization of sludge from the wastewater-treatment plant of a refinery dielectric properties measurements, Int. J. Eng. Technol., vol. 8, no. 2, 2011, p.48–56.