AI SearchA detailed study of gravel bed flocculator performance (Record no. 27855)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03495nas a2200445 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818090350.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 011298s1985 th r 000| 0eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10027944 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-85-26 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Trinh Thi Thanh |
| 245 12 - TITLE STATEMENT | |
| Title | A detailed study of gravel bed flocculator performance |
| 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 | 82 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-85-26 |
| 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. | Flocculators are used in water and waste water treatment process to remove turbidity, colour, taste, odour, etc. The gravel bed flocculator performance was studied for various operating parameters such as gravel size, gravel bed height, the approach velocity and for different concentration of Kaolin clay. The performance was studied in terms of turbidity removal efficiency, floc growth and headless development. The removal efficiency for the three gravel sized used ranged 62-94% and the suitable bed depth was found 65.cm. The velocity gradient in the bed increased as flocculation run proceeds due to headless development and it ranged between 18-75 s. The non dimensional parameter, Gt for successful flocculation and suspended solid removal varied from 2 x 10 3 to 2.7 x 10 4 which is lower compared to that in conventional flocculation (10 4 - 10 5 ). Empirical relationships between G, V and T can be formulated from limited number of experiments with the raw water to be treated, which will then be useful in the selection of design parameters. In the present study, such an empirical relationship was formulated for Kaolin clay suspension in the presence of alum. G=0.935 v 0389 t0.24 The gravel bed flocculator can be used with advantage for small communities and villages because it not only achieves uniform intensity of agitation throughout the gravel bed but also does not require any power, mechanical equipment and skilled labour. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Flocculation |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Vigneswaran, S., |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Nguyen, Cong Thanh, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Samorn Muttamara, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Chongrak Polprasert, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | German Academic Exchange (DAAD) Federal Republic of Germamy, |
| 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-85-26 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B20025">http://203.159.5.9/ait-thesis/detail.php?q=B20025</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10027944 |
| b | mnait |
| c | x |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240409 |
| 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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| -- | 2 |
| 962 ## - | |
| -- | 000:001:PDF:b1002794:004656:0:0:0:0:0:0 |
| -- | Abstract |
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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 | 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 : 30050120804355 |
| CREATED | CREATED : 2014-05-28 |
| RECORD Id | RECORD # : i12804289 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
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| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120224216 |
| CREATED | CREATED : 2016-09-05 |
| RECORD Id | RECORD # : i12972782 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050121073794 |
| CREATED | CREATED : 2023-10-04 |
| RECORD Id | RECORD # : i13442570 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 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 | 18/08/2026 | 50.00 | AIT Thesis no.EV-85-26 | 30050120804355 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.EV-85-26 | 30050120224216 | 18/08/2026 | 18/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.EV-85-26 | 30050121073794 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication |