初次认识曹曼,是在1991年年底的一次科研课题的鉴定会上,那时,他还是大学老师。就在这次鉴定会上,由他承担的国家纺织部“铁屑过滤法处理印染废水研究”通过有关专家的鉴定,确认这项技术水平处于国际领先地位,同时此项技术获得国家专利。知道的人,都明白这项发明来之多么不易。他所在大学的科研条件无法同国内名牌大学相 For the first time understanding Cao Man, was appraised at a scientific research project at the end of 1991. At that time, he was a university teacher. At this appraisal meeting, the State Department of Textiles under his charge “iron filings filtration treatment of printing and dyeing wastewater ” through the identification of experts to confirm that this level of technology in the international leading position, while the technology access to national patents . People who know know how hard this invention is. His university’s research conditions can not be the same with domestic famous universities