AI SearchDetermination of design parameters for the rock bed filtration method (Record no. 27982)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04054cas|a2200421 i 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818090413.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 230399s1994 th uzm rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10194824 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no. EV-94-19 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Nittaya Muangphan |
| 245 10 - TITLE STATEMENT | |
| Title | Determination of design parameters for the rock bed filtration method |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1994 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 87 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-94-19 |
| 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 & Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Asian Institute of Technology, 1994 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | In this study two pilot-scale rock bed filters were conducted to determine the effects of design parameters and operating conditions namely; type and arrangement of filter media, location of aerator and HRT on RBF's petformance. Influent used was a mixture of AIT domestic wastewater and tap water in a ratio of 1:1. The long term behavior of sediment and biofilm was also studied. For filter media effect, two types of filter media, broken bricks (diameter of 10 cm) and rocks (diameter of 20-15-10-5 cm), were installed in the reactors under the same HRT of 4 hours (OLR of 30 gBOD/m2 .d) and aerator location. The arrangement of rocks, which was from big ones to small ones in the reactor direction, may be recommended for better filter media installation. Since the rock media showed higher removal efficiencies of SS and VSS than the brick media. In case of different aerator location, three patterns (pattern 1-3) of aerator location on RBF's petformance were studied at 4 hour HRT (OLRs of 20-30 gBOD/m2 .d) by keeping the similar type of filter media. Aerator were installed at 0.5-1.5 m for pattern 1, 0.5-2.0 m for pattern 2 and 1.5-2.0 m for pattern 3. In pattern 2, the highest removal efficiencies of 78.4%, 74.0%, 60.9% and 60.9% for SS, VSS, BOD and COD, respectively were obtained. This was followed by pattern 3 and 1. However, there was only a small difference between pattern 2 and 3. The effect of HRT was examined in three cases; namely 2, 4 and 8 hours HR.Ts. These OLRs were 68, 20 and 17 gBOD/m2 .d respectively. The highest RBF's performance was obtained at the longest HRT of 8 hours or the lowest OLR of 17 gBOD/m2 .d.The removal efficiencies of pollutants seem to be directly proportional to the hydraulic retention time. The overall removal efficiencies of SS, VSS, COD, BOD and NH4-N were 84.7, 86.5, 77.1, 76.4 and 50.3%, respectively. To study long term behavior of sediment at the bottom and biofilm on the media, the accumulation of these were considered at the first-half portion of the reactors during four months operation. |
| 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 | Umita, Teruyuki, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Fujii, Shigeo, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Chongrak Polprasert, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Samorn Muttamara, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | The Government of Denmark (DANIDA), |
| 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-94-19 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B15774">http://203.159.5.9/ait-thesis/detail.php?q=B15774</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10194824 |
| b | mnait |
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| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240329 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | x |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050003047841 |
| CREATED | CREATED : 1994-05-16 |
| RECORD Id | RECORD # : i10233404 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050003047858 |
| CREATED | CREATED : 1994-05-16 |
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| Barcode | Barcode : 30050160055413 |
| CREATED | CREATED : 2016-11-05 |
| RECORD Id | RECORD # : i12975473 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | 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 | 18/08/2026 | AIT Thesis no. EV-94-19 | 30050003047841 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | AIT Thesis no. EV-94-19 | 30050003047858 | 18/08/2026 | 2 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no. EV-94-19 | 30050160055413 | 18/08/2026 | 18/08/2026 | 40-Archives |