出版社：Polish Society of Ecological Engineering (PTIE)
摘要：The predominant method of the sewage sludge management in Poland is land disposal.However, since 01/01/2013, this method will be prohibited.Therefore, there is a strongneed for development of thermal methods of sludge disposal.In the Polish legal system sewagesludge may be named as a biomass or waste.For purposes of determining the obligations ofenvironmental regulations definition of the Minister of Environment should be used.Whendisposing of sewage sludge in an amount up to 1% by weight of fuel, emission standards for fueldo not change.At the disposal of sewage in quantities of more than 1%, should be conductedcontinuous measurement of emissions, including HCl, HF, and continuous measurements offlue gas parameters (as for the installation of waste disposal).For purposes of settlement of theshare of energy from renewable sources we use the definition of Minister of Economy.In thiscase, in accordance with applicable law sewage sludge shall be considered as pure biomassis CO2 neutral.The use of sewage sludge as a fuel requires the determination of fundamentalcombustible properties.These properties should be in accordance with the requirements putfuels as an energy source.The paper presents results of a detailed physico-chemical analysisof dried sewage sludge produced in the two Polish wastewater treatment plants.The resultswere compared with five representatives of biomass fuels: straw of wheat, straw of rape,willow, pine and oak sawdust.Ultimate and proximate analysis includes a detailed analysisof fuel and ash.The results clearly indicate that the sludge is a very valuable fuel similar to“traditional” biomass.
