AI SearchComparison of declining rate coarse media filtration with constant rate dual media filtration at Bangkhen water treatment plant (Record no. 19896)
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|---|---|
| fixed length control field | 03760nas a2200445 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817173433.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 011298s1985 th r 000| 0eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10151849 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-85-28 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Yossarin Bhimsakka |
| 245 10 - TITLE STATEMENT | |
| Title | Comparison of declining rate coarse media filtration with constant rate dual media filtration at Bangkhen water treatment plant |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1985 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 115 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-85-28 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Asian Institute of Technology, 1985 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Bangkhen Water Treatment Plant used dual media filter to remove the suspended solids from the effluent of solid-contact clarifier. The dual media filters used contains 80 cm of anthracite (E.S. = 0.85 mm; U = 1.5) over 40 cm of sand (E.S. + 0.5 mm, U = 1.5) at a filtration rate of 13.75 m3/m2.h. In this study the possibility of using narrowly graded sand as sole filter medium was investigated. The two sand sizes studied (1.00 to 1.19 mm; 1.19 to 1.41 mm and 1.20 m depth) indicated that the narrowly graded coarse medium produces comparable filter quality while leading to less headloss development. In this case the headloss was found to be more uniformly distributed especially when high filtration rates (>15 m3/m2.h) were used. The backwash velocity computation made for single coarse medium and dual media filters indicated that the former required much higher backwash rate than the latter for comparable degree of expansion. The declining rate filter experiments conducted with single medium filters indicated that the headloss development is lesser in the case of declining rate filtration compared to constant rate filtration for the same water production. This indicates the declining rate filtration can be operated for a longer time before backwashing which will reduce the significantly the operating cost of filter. The headloss equation H/Ho = 1+KO is found to be valid for constant rate filters and the value of K decreased with the increase in filtration rate and increase in sand size. The prediction of headloss for declining rate filters was satisfactory when using the K value of the average (both arithmetic and geometric means) velocity. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Water treatment plants |
| General subdivision | Thailand |
| -- | Bangkok |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Filters and filtration |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Vigneswaran, S., |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Samorn Muttamara, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Lohani, B.N., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Federal Republic of Germany (CDG), |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. EV-85-28 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B20027">http://203.159.5.9/ait-thesis/detail.php?q=B20027</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10151849 |
| b | mnait |
| c | x |
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| a | 240411 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120804330 |
| CREATED | CREATED : 2014-05-28 |
| RECORD Id | RECORD # : i12804307 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120224190 |
| CREATED | CREATED : 2016-09-05 |
| RECORD Id | RECORD # : i12972800 |
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| Barcode | Barcode : 30050121073778 |
| CREATED | CREATED : 2023-10-04 |
| RECORD Id | RECORD # : i13442612 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 50.00 | AIT Thesis no.EV-85-28 | 30050120804330 | 17/08/2026 | 3 | 17/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.EV-85-28 | 30050120224190 | 17/08/2026 | 17/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 50.00 | AIT Thesis no.EV-85-28 | 30050121073778 | 17/08/2026 | 1 | 17/08/2026 | 20-AIT Publication |