a case study in Thailand Shu, Li creator Verink, J. Chairperson Schroder, H. Examination committee Reutergardh, L. Examination committee Visvanathan, C. Examination Committee Government of Denmark Scholarship donor text series technical report th Bangkok Asian Institute of Technology 1992 continuing eng 84 leaves A medium scale mun g bean starch factory was taken in this s tudy in order to assess t h e pollution caused by various streams in a starch/noodle factory and pr ovide basic information for wast e water management in s tarch/noodle factories. To compare the characteristics of waste water from different facto ries, other two s mall sca le noodle factories were a lso taken into consideration . The medium scale factory u ses mun g bean as raw material and produces approximately 18 ton starch a nd 11 ton protein out of about 50 ton mun g b ean ea c h day with 6-10 ton of raw material getting into waste stream. The results of t his research s how that t h e water con s umption for processing one ton mun g bean in the factory is 16-25 m3 hig he r tha n theoretically required, t ha t everyday 30 - 140 kg out of 3-6 ton starch used for v ermicelli production is wasted, which also goes into waste water, a nd that the characteristics of total waste water from t his factory are as s uch: COD = 3000-5050 mg/l, SS = 1100-1600 mg/l, TKN = 100-250 mg/l and TP = 30-50 mg/l. The same kinds of infor mation about t h e other two small scale factories were also given in t he study and the comparison with the medium o ne have been made. Based on t he research, methods have been proposed for minimizin g the wast e water produced by t h ese factories so as to r edu ce t h e pollution. One of t he alternatives is to use wate r in a con trolled way b y ma rkin g optimum flow rates on t he tab valves, in whic h water con s umption can be b roug ht down from 16-25 m3 to 12 m3 for processin g on e ton mung bean. A thesis submitted in partial fulfillment of the requirement for the degree of Master of science Thesis (M.Sc.) - Asian Institute of Technology, 1992 Starch industry Waste disposal Factory and trade waste Thailand Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B16847 http://203.159.5.9/ait-thesis/detail.php?q=B16847 170239 20260818173616.0