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008 170399s1992 th u m rtt 0| a1eng d
035 _a.b10743467
099 9 _aAIT Thesis no.EV-92-22
100 0 _aSaranpong Sookhakich
245 1 0 _aTreatment of phenolic wastewater in Attached-Growth Waste Stabilization Ponds ( AGWSP)
260 _aBangkok :
_bAsian Institute of Technology,
_c1992
300 _a66 p.
490 1 _aThesis ;
_vno. EV-92-22
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1992
520 _aLaboratory-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 .
650 1 0 _aSewage lagoons
650 1 0 _aSewage
_xPurification
_xPhenol removal
700 0 _aChongrak Polprasert,
_eChairperson
700 1 _aTran, Francis,
_eExamination committee
700 1 _aTanaka, Shuzo,
_eExamination committee
710 2 _aThe Government of Federal Republic of Germany (DAAD)
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-92-22
856 _3Full-Text
_u http://203.159.5.9/ait-thesis/detail.php?q=B16841
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