000 03007nam a2200409 4500
005 20260818090151.0
008 021098s1979 th r 0000|0 eng d
035 _a.b10189701
099 9 _aAIT Thesis no. EV-79-29
100 1 _aChen, Yih-rong
245 1 0 _aDesign criteria for inclined tube settlers
260 _aBangkok :
_bAsian Institute of Technology,
_c1979
300 _a68 p.
490 1 _aThesis ;
_vno. EV-79-29
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1979
520 _aThis research was conducted in an attempt to develop useful design criteria of inclined square tube settlers for their application in surface water treatment system. The pilot unit was designed keeping the similarities of a conventional settling tank. The experiments were per formed with various influent turbidities under different flow rates and tube lengths. From the model developed, it was found that 14.9 is the economical critical value for square tube dimension L (i.e. L = t/d, d is the size of tube, tis the length of tube) . Both flow rate and influent turbidity affect this critical value. It is desirable to keep the flow rate at less than 0.3 cm/s (10.8 m3/m2-h). The optimum flow rate is 0.2 cm/s (7.2 m3/m2-h), and the corresponding tube dimensions Lare 12.5, 19, 28 for 20, 40, 60 JTU turbidity of raw water, respectively. Diagrams, tables and mathematical model are developed for E = (1 + C) (g(T) f'(T)) in which C is a constant; overflow rate; E removal efficiency. On the basis of this information, the designer can easily make decisions as to what dimensions of tube to be used and surface area required.
650 0 _aWater-supply engineering
_xApparatus and supplies
700 1 _aNguyen, Cong Thanh,
_eChairperson
700 1 _aLohani, Bindu N.,
_eCo-Chairperson
700 1 _aI, Fude,
_eExamination Committee
710 2 _aTaiwan Power Company, R.O.C.,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-79-29
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B22248
907 _a.b10189701
_bmnait
_cx
902 _a250611
998 _b2
_c951012
_dm
_ea
_fx
_g0
945 _lmnait
945 _lmnait
945 _lmnarc
942 _c20
942 _c40
909 _aBarcode : 30050003103032
_bCREATED : 1994-05-16
_cRECORD # : i10227040
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050002932845
_bCREATED : 1994-05-16
_cRECORD # : i10227052
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050120226575
_bCREATED : 2016-04-27
_cRECORD # : i12958311
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
999 _c27091
_d27091