Submitted on: 12 November 2000.
Revised on: 26 December 2000.
Accepted on: 10 February 2001.
___________________JOURNAL OF ENVIRONMENTAL ENGINEERING
Submitted on: 15 August 2006.
Revised on: 21 October 2006.
Accepted on: 21 November 2006.
___________________JOURNAL OF ENVIRONMENTAL ENGINEERING
Submitted on: 03 June 2002.
Revised on: 21 July 2002.
Accepted on: 14 August 2002.
___________________JOURNAL OF ENVIRONMENTAL ENGINEERING
http://reply.papertrans.cn/2/167/16637/16637-34.png
Submitted on: 12 September 2003.
Revised on: 27 November 2003.
Accepted on: 27 December 2003.
___________________JOURNAL OF ENVIRONMENTAL ENGINEERING
http://reply.papertrans.cn/2/167/16637/16637-36.png