Membrane technology has its origins over four decades ago, primarily in the use of electrodialysis as a desalination process. Advances in recent years, however, have brought membrane technology back into focus as a very promising approach to wastewater treatment across a vastly expanded field of applications. These proceedings survey the state of the art in membrane technology and its associated research and development. Papers cover ultrafiltration, crossflow microfiltration, electrodialysis, reverse osmosis and other novel techniques and their use in the treatment of effluents from mining, power generation, agriculture, food-processing, textiles, pulp and paper and other industrial sources, municipal wastewaters, desalination, and recycling - a quite staggering range of applications are reported in pilot or full scale.