Rethinking Bangkok's Wastewater Strategy

by Thongchai Klankrong, Dir. General; Dept. of Drainage and Sewerage, Bangkok Metropolitan Administration, Bangkok, Thailand,
Thomas S. Worthley, Vice Pres.; Metcalf & Eddy, Inc., Bangkok, Thailand,


Serial Information: Civil Engineering—ASCE, 2001, Vol. 71, Issue 6, Pg. 72-77


Document Type: Feature article

Abstract: In the past 10 years the Bangkok Metropolitan Administration has spent $1 billion developing a major wastewater collection and treatment program for the city of Bangkok. The city is presently evaluating its program implementation experience thus far, reexamining the design parameters, criteria, and assumptions that guided the first wave of projects. The assessment includes a number of issues, including the role of on-site treatment, treatment plant spacing, interfaces between the old and new sewer systems, the need for nutrient removal, Asian sewage characteristics, and separate versus combined sewer systems. The analysis has indicated ways the city may construct more effective wastewater facilities at lower cost by using design criteria that better reflect local conditions. These lessons may be applied to future projects in Bangkok and in other large Asian cities.

Subject Headings: Thailand | Wastewater management | Water treatment

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