AI SearchApplication of coarse-media slow sand filtration and rapid sand filtration in aquaculture (Record no. 6516)
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| fixed length control field | 05888nam a2200481 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817162843.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10087503 |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | En |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no. EV- 88-28 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Casiano, Visitacion Legaspi |
| 245 #0 - TITLE STATEMENT | |
| Title | Application of coarse-media slow sand filtration and rapid sand filtration in aquaculture |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1988 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 136 p |
| 440 #0 - SERIES STATEMENT/ADDED ENTRY--TITLE | |
| Title | Asian Institute of Technology. Thesis ; |
| Volume/sequential designation | no. EV-88-28 |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-88-28 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Eng.) - Asian Institute of Technology, 1988 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Laboratory experiments were carried out with pilot-scale experimental units of coarse-media slow sand filter and rapid sand filter. Coarse-media slow sand filter was operated with a 0.56 m diameter and 2. 7 m high filter column, filter media size of 1 - 2 mm and media depth of 1.0 mat filtration rates of 0.5 and 0.2 m 3/m2 h . Experiments on rapid sand filtration were carried out with two different sizes of filter column. Tests using the 10 cm diameter and 1. 9 m high filter column were conducted with media size of 1.0 mm and media depth of 1.0 m at filtration rates of 7 . 5 and 5 .0 m 3/m2h. Another experimental run was carried out with 0.56 m diameter and 2.1 m filter column with filter media size of 1 - 2 mm and media depth of 1.0 m at filtration rate of 1 . 0 m 3/m2 h. One circular concrete fish tank with 1.16 m diameter was used for each experimental unit. A 1.5m x 1.0m x 1.0m existing biological filter was operated with 0.45 m filter media depth which consists of t he following sizes of crushed stones: 15 cm depth of 2 cm diameter, 20 cm depth of 0.95 cm diameter and 20 cm depth of 0.51 cm diameter. A filtration rate of 1.92 m 3 ;m 2h was implemented. Eight concrete fish tanks were used with the existing biological filter. Different parameters were measured in order to monitor the water quality as well as to be able to compare the performance of the filters. Experimental results showed that the coarse-media slow sand filter (CMSSF) has a comparatively higher removal efficiency than the existing biological filter (EBF). EBF has a mean removal efficiency of 20.6, 2.31, 61.7, 57.66 and 20.37% for turbidity, total phosphorus, ammonia, nitrite and chemical oxygen demand, respectively with 6.85% nitrate production. CMSSF at high filtration rate resulted to a removal of 55, 6.23, 81.18, 74.23 and 36.42% for turbidity, total phosphorus, ammonia, nitrite and chemical oxygen demand, respectively with 17.98% nitrate production. On the other hand, CMSSF was operated at lower filtration rat e which showed a mean difference of 52 .13 4.72, 92.54, 87.65 and 31.71%, respectively with a corresponding nitrate production of 41.68% at lower filtration rate . It was a lso evident that the coarse-media slow sand filter at 0.20 m 3 /m2 h filtration rate has slightly higher removal efficiency compared to its performance at 0.50 m 3/m2h filtration rate . Furthermore, dissolved oxygen has decreased by 34.7 an 48.79% (mean values) after 57 and 33 days of filtration run for CMSSF at high and low filtration rates , respectively. Dissolved oxygen of the filtered water from EBF has a mean increase of 9. 8% due to the constant flushing of the overflow from the header tank which was returned back to the c l ear water tank. A similar arrangement in CMSSF can overcome the problem of DO depletion, which is not favorable to fish. Rapid sand filtration carried out with a 10 cm diameter filter 3 2 column at filtration rates of 7 . 5 and 5 . 0 m /m h has only 12 and 9 hours 3 2 filtration run, respectively . Whereas, the filter operated at 1.0 m /m h has a filtration run of 6 . 75 days. Results showed that removal efficiency was higher at the lowest filtration rate implemented. Percentage weight gain of individual fish for all the systems were found to be increasing but it started to decline after 63 days in the case of EBF. Likewise, daily weight gain and specific growth rate of indi vidual fish used for all systems was observed to be increasing except for EBF in which it started to decrease after 21 days of experimentation. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Water |
| General subdivision | Purification |
| -- | Filtration |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Vigneswaran, Saravanamuthu, |
| 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 | Lin, Chang Kwei, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kriengsak Udomsinrot, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Wee, Kok Leong, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | German Academic Exchange Scholar (DAAD) Federal Republic of Germany, |
| Relator term | Scholarship Donor |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B18898">http://203.159.5.9/ait-thesis/detail.php?q=B18898</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10087503 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240410 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
| -- | a |
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| 940 ## - EQUIVALENCE OR CROSS-REFERENCE--UNIFORM TITLE [OBSOLETE] [CAN/MARC only] | |
| Uniform title | <a href="AIT Thesis no. EV- 88-28">AIT Thesis no. EV- 88-28</a> |
| Language of a work | mnait |
| -- | b |
| -- | m |
| -- | 099 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| i | 3005000019848x |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| i | 30050000198498 |
| g | 2 |
| l | mnait |
| 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 : 30050003044657 |
| CREATED | CREATED : 1994-05-16 |
| RECORD Id | RECORD # : i10092900 |
| LPATRON | LPATRON : 1018969 |
| LCHKIN | LCHKIN : 2006-02-28 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050003044665 |
| CREATED | CREATED : 1994-05-16 |
| RECORD Id | RECORD # : i10092912 |
| LPATRON | LPATRON : 1018969 |
| LCHKIN | LCHKIN : 2006-01-26 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120223382 |
| CREATED | CREATED : 2016-10-05 |
| RECORD Id | RECORD # : i12973634 |
| LPATRON | LPATRON : 0 |
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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 | 10.00 | AIT Thesis no. EV- 88-28 | 30050003044657 | 17/08/2026 | 1 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 10.00 | AIT Thesis no. EV- 88-28 | 30050003044665 | 17/08/2026 | 2 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no. EV- 88-28 | 30050120223382 | 17/08/2026 | 17/08/2026 | 40-Archives |