01789nam a2200241   450000500170000000800410001703500150005810000170007324500770009026000520016730000100021949000270022950001550025650200580041152007460046965000270121570000340124270000370127670000560131371000540136981000590142385600650148220260818214206.0011298s1987    th      r    0000|00eng d  a.b106060991 aLiao, Wan-li10aSlow sand filtration with an additional top layer of jute fiber material  aBangkok :bAsian Institute of Technology,c1987  a64 p.1 aThesis ;vno. EV-87-19  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Technology  aThesis (M.Eng.) - Asian Institute of Technology, 1987  aThis research aims to innovate slow sand filter process  in its purification capacity to treat surface waters for a  drinking purpose . The experiment was performed by using locally  available jute fabric to overlay sand bed . The filter was  operated at filtration rates of 0. 2, 0. 4 an d 0. 6 m3/ m2- h .  Jute-fiber h ad retained more than 86 percent of influent  suspended solids (SS) that increased the filter run of the sand  bed. However, jute fiber release d TOC a nd tot al solids (TS) t o  the filtrate that it resulted in l ow efficiencies in TOC an d TS  removal. Coliform bacteria were removed significantly but  Further dis infection was needed for drinking purpose. Also,  removal of iron and manganese were highly efficient. 0aFilters and filtration1 aShin, Hang-Sik, eChairperson1 aI, Fude, eExamination Committee1 aVigneswaran, Saravanamuthu, eExamination Committee2 aRepublic of China Government, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. EV-87-19  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B19242