He retired in 2004 as professor and director of the institute of water quality control and waste management at the technical university of munich , and has since served as director of the institute of advanced studies on sustainability Professor wilderer在2004年退休時,獲德國慕尼黑大技術(shù)大學(xué)委任為水質(zhì)控制及污水管理研究所所長,并出任該??沙掷m(xù)發(fā)展高級研究所所長。