Walter R. Niessen, P.E., B.C.E.E.

Niessen Consultants

Walter Niessen brings 50 years of experience in municipal, industrial, medical, biosolids, and hazardous wastes to Forester University. As a senior technical consultant and specialist in process analysis of waste management and associated air pollution systems, Niessen has managed all levels of project development for a wide range of projects from small, local communities to international assignments, including: problem definition; analysis of combustion and air pollution; energy recovery alternatives; environmental assessments; and procurement steps, designing, construction, start-up and acceptance testing and troubleshooting for operating systems. Additionally, Niessen brings specialist experience in preparing pre-feasibility studies, feasibility studies, conceptual studies, strategies of waste management for local and national governments and industries, waste management plans and presenting seminars on waste management and related technology. Niessen has written over 95 technical papers on these subjects, contributed chapters to several envi­ronmental engineering books and authored a definitive text on combustion and incineration technology “Combustion and Incineration Processes, Applications in Environmental Engineering” now in its 4th edition.

As a senior lecturer, Niessen has prepared and delivered training programs to engineers, regulators, political leaders, and industrial firms where his experience in combustion technology, waste management, and/or air pollution control was of primary interest. Since 1982, he has worked with the Center for Professional Advancement to present courses (in both the U.S. and Europe) involving incineration of hazardous and non‑hazardous waste. These courses included a comprehensive review of the basic principles and analytical methods applicable to combustion, pyrolysis and gasification systems; principles of associated air pollution control technologies; status of conventional and advanced technology in thermal processing of domestic, industrial, hazardous and biosolid solid, sludge, liquid and gaseous wastes, and the risks and challenges of decision-making for firms or jurisdictions considering bringing emerging technologies into their operations. He has also prepared and delivered courses to operators of combustion systems where operator decisions are critical both to environmental performance and to equipment protection and operator safety.