The applied progress of orthogonal experiment in wastewater treatment

The method of orthogonal experiment design ("orthogonal method" for short) is an important branch of mathematical statistics, base on statistics probability theory, professional and technical knowledge and practical experience, arrange experiment plan by made full use of standardization of orthogonal table, and mainly used in industrial and agricultural production and scientific research. This paper introduces the basic principle of the orthogonal method and the methods of orthogonal experiment design, systematically state the applied progress of orthogonal experiment in wastewater treatment research at home and abroad, finally, take perspectives for the role of orthogonal experiment in wastewater treatment research in the future.