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

摘要

Malaysia expected to face serious problems in sewage sludge disposal in the next few years if this waste doesn't 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 transformation and advance solution for treatment and disposal since the production of sewage sludge rapidly increasing and the available solution for their disposal is unacceptable anymore. 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 in order to convert this sludge into energy 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 reduce 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.