Saranpong Sookhakich creator Chongrak Polprasert Chairperson Tran, Francis Examination committee Tanaka, Shuzo Examination committee The Government of Federal Republic of Germany (DAAD) text series technical report th Bangkok Asian Institute of Technology 1992 continuing eng 66 p. Laboratory-s cale and pilot-scale study was conducted to evaluate the efficiencies of AGWSP (Attache d-growth waste stabilization ponds) in treating a phenolic wastewate r. Experimental results obtained i n the l aboratory-scale units r eveal ed that the AGWSP fed with influent phenol concentrations of 500-2000 mg/L had their SCOD and phenol r emoval e ffi c i encie s decreased wi th increas ing phenol concentration. At the influent phenol concentration of 500 mg/L, corresponding to the organic loading r a t e (OLR) of 180 kgCOD/(ha . d), the SCOD and phenol removal e ffi ciencies were 94. 2 and 99. 7%, respectively. At the influent phenol concentrations of 1000 , 1500 and 2000 mg/L (corresponding to OLR of 360 , 540 and 720 kgCOD/(ha . d)), the SCOD and phenol removal efficiencies were 50.8 and 50.5, 45.4 and 45.5, and 27.9 and 28 . 0%, respectively. The pilot-scal e AGWSP s hock-loaded with 500 mg/L of phenol could recover to i ts norma l pe r fo rmance in wit hin 13 days a fter the phenol dos age . The AGWSP uni ts we re observed to have excessive bi of ilm growth on the a ttac hed-growt h media after about 2 month of operation . The attac hed gr owth media s hould be c l eaned pe riodically to ensure maximum treatment efficiency of the AGWSP units . A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1992 Sewage lagoons Sewage Purification Phenol removal Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B16841 http://203.159.5.9/ait-thesis/detail.php?q=B16841 170399 20260819085213.0