Session 1 : Processing and Costs.- Overview of sewage sludge treatment processes : An outlook.- Treatment processes for farm wastes.- Stabilisation of sewage sludges and liquid animal manures by mesophilic anaerobic digestion - an overview.- "State of the Art" on sludge composting.- Optimization of processing, managing and disposing of sewage sludge.- Alternative uses of sewage sludge.- Session 2 : Characterization of Sludge.- Sampling techniques for sludge, soil and plants.- Abundance and analysis of PCBs in sewage sludges.- Chemical methods for the biological characterization of metal in sludge and soil.- Characterization of the physical nature of sewage sludge with particular regard to its suitability as landfill.- Microbiological specifications of disinfected sewage sludge.- Inactivation of parasitic ova during disinfection and stabilisation of sludge.- Epidemiological studies related to the use of sewage sludge in agriculture.- Transport of viruses from sludge application sites.- Health risks of microbes and chemicals in sewage sludge applied to land - recommendations to the world health organisation.- Session 3 : Management Considerations in Sludge and Effluent Disposal.- Recommendations on olfactometric measurements.- Manure nutrient composition : rapid methods of assessment.- Efficiency of utilisation of nitrogen in sludges and slurries.- Effect of a long term sludge disposal on the soil organic matter characteristics.- Contamination problems in relation to land use.- Long-term effects of contaminants.- Effect on a long term sludge disposal on cadmium and nickel toxicity to a continuous maize crop.- Trace metal regulations for sludge utilization in agriculture; a critical review.- Poster Session.- Leaching resulting from land application of sewagesludge.- Germination tests for the determination of sludges agricultural value.- Utilization of sewage sludge as fertilizer in energy plantations on peatland.- The use of composted agricultural waste as peat substitute in horticulture.- Labscale simulation of isman-cotton batch phase anaerobic digestion for prediction of plant design and performance.- Solid phase anaerobic digestion of farm wastes mixed with sewage sludge.- Aerobic stabilization in the solid state of partially dewatered sewage sludge.- Environmental impact assessment of agricultural use of sewage sludge.- Analytical characterization of biological sewage sludges especially about some organic compounds.- Sludge composting and utilization in West Switzerland.- Productivity and quality of cereal crops grown on sludge-treated soils.- Biological evaluation of sludge phytotoxicity.- The fate and behaviour of selected heavy metals during pyrolysis of sewage sludge.- Latest test results in sludge dewatering with the CHP-filter press.- A pot experience with a high level copper sewage sludge.- Chemical properties of sewage sludges produced in the Piedmontese area (Italy).- Autothermic sludge incineration.- Modification of heavy metals solubility in soil treated with sewage sludge.- Methods of treating pig slurry to increase the volumes which can be used on crops.- Chemical composition of sludges from sewage treatment systems in the Emilia Romagna region.- Application of CaCl2-extraction for assessment of cadmium and zinc mobility in a wastewater-polluted soil.- Anaerobic contact digestion of biochemical sludge (from simultaneous precipitation) - results of a semi full-scale study.- The alternative "earthworm" in the organic wastes recycle.- Slurry meter instructions.- Composting of sewage sludge containingpolyelectrolytes.- An alternative application for sewage sludge : black earth.- Toxic organic substances in sewage sludges : case study of transfer between soil and plant.- Varietal tolerance in cereals to metal contamination in a sewage treated soil.- Effect of sample storage on the extraction of metals from raw, activated and digested sludges.- Discussion.- Discussion.- Session Reports.- Processing and costs.- Characterization of sludge.- Management considerations in sludge and effluent disposal.- Conclusions and Recommendations.- Conclusions and Recommendations.- List of Participants.- Index of Authors.
