02066nas a2200241   450000500170000000800410001703500150005810000150007324500450008826000520013330000100018549000270019550001560022250200590037852010450043765000300148270000350151270000400154770000390158771000740162681000590170085600650175920260817162839.0271098s1982    th      r     000|  eng d  a.b100874481 aKyi, U Tun10aApplication of BOD3 in tropical climates  aBangkok :bAsian Institute of Technology,c1982  a67 p.1 aThesis ;vno. EV-82-17  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development  aThesis (M. Eng.) - Asian Institute of Technology, 1982  aThe temperature of 30°c is an average ambient temperature of tropical countries. BOD determinations measured at this temperature would, therefore,  be useful and appropriate for measuring of pollution strength of various wastewaters. 300 mi BOD bottle is currently used as standard BOD bottle for BOD determination of various wastewaters. This study suggests that 50 mi bottle can also be used as standard BOD bottle besides 300 mt bottle.  Using 50 mt BOD bottle, the chemical cost for BOD analysis can be reduced by 75%.  In this study, the BOD of pure organic compounds, domestic wastewaters, industrial wastewaters and river waters were determined at two different incubation temperatures of 20°C and 30°c by using 300 mt, 150 mt, 100mt,  and 50 mt bottles. 150 mt and 100 mt bottles can also be used as BOD bottles for BOD determination. Using 50 mt BOD bottle, the 30°c BOD progression conformed closely in shape to that at 20°c, and 3-day 0 30°c, BOD values were found to be in reasonable agreement with 5-day, 20 C BOD values. 0aBiochemical oxygen demand0 aSamorn Muttamara,eChairperson1 aNguyen, Cong Thanh,eCo-Chairperson1 aOrth, H.M.,eExamination Committee2 aThe Government of the Federal Republic of Germany,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. EV-82-17  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B21195