Submitted on: 07 July 1998.
Revised on: 15 July 1998.
Accepted on: 01 August 1998.
Water Practice and Technology---IWA PUBLISHING
Submitted on: 24 September 2006.
Revised on: 11 October 2006.
Accepted on: 30 October 2006.
Water Practice and Technology
http://reply.papertrans.cn/4/306/30564/30564-33.png
Submitted on: 18 June 1998.
Revised on: 19 July 1998.
Accepted on: 29 July 1998.
Water Practice and Technology---IWA PUBLISHING
Submitted on: 25 October 2006.
Revised on: 23 November 2006.
Accepted on: 19 December 2006.
Water Practice and Technology
http://reply.papertrans.cn/4/306/30564/30564-36.png