AI SearchSewage circulating reactor : (Record no. 106212)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04329cas|a2200457 i 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818213831.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 180699s1993 th uzm rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10598091 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Diss. no. EV-93-2 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Krishna, Manandhar Uttam |
| 245 10 - TITLE STATEMENT | |
| Title | Sewage circulating reactor : |
| Remainder of title | an approach to recirculating wastewater in sewers |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1993 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 180 leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Dissertation ; |
| Volume/sequential designation | no. EV-93-2 |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D.) - Asian Institute of Technology, 1993 |
| 500 ## - GENERAL NOTE | |
| General note | A doctoral dissertation submitted in partial fulfillment of the requirements for the degree of Doctoral of Engineering. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | It has been established that biological reactions occur in sewer systems, and decompose organic matter and other constituents in wastewater. Thus, it appears worthwhile to utilize the self-purifying capacity of sewer systems. This study deals with recirculation of wastewater so that a portion of the conveyance conduit works as a circulating biological reactor (referred to as Sewage Circulating Reactor). Experiments were performed with a pilot scale unit made of a 87 m long galvanized iron channel (8 cm wide) in which wastewater was recirculated back to the starting point. Surface reaeration was the only source of oxygen. The unit was first fed with synthetic wastewater at Chemical Oxygen Demand (COD) and Total Nitrogen (TN) loading rates of 16.81 - 62.02 gCOD/m2/d and 1.8 - 7.84 gTN/m2/d respectively. An optimal TN removal of 0.77 gTN/m2/d was obtained at a TN loading rate of 3.78 gTN/m2 /d. The corresponding COD loading and removal rates were 27.45 and 22.0 gCOD/m2/d respectively. The biofilm areal density was higher and more fluctuating in the beginning of the channel while it was lower and more uniform towards the end. Later campus wastewater was fed to the unit at loading rates of 15.73 - 19.06 gCOD/m2/d and 4.66 - 5.44 gTN/m2/d. In spite of zero dissolved oxygen (DO) in the influent, the system showed COD removal rates close to 9.5 gCOD/m2/d (40 - 60%), and TN removal rates about 1.6 gTN/m2/d (23 - 26%). The biofilm in the experiments with campus wastewater was thicker than in the experiments with synthetic wastewater. The ratio of total volatile solids (TVS) to total solids (TS) in experiments with campus wastewater was approximately half of that for experiments with synthetic wastewater. A distinct decrease in the DO level in the system was observed with increasing organic and TN loading rates in experiments with synthetic and campus wastewater. This resulted in a decrease in nitrification rates at higher loadings. Thus, the overall system performance at high loadings was limited by hampered nitrification due to lack of oxygen. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Sewage |
| General subdivision | Purification |
| -- | Biological treatment |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Sewage |
| General subdivision | Purification |
| -- | Activated sludge process |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Schroder, Hans, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Chongrak Polprasert, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tawatchai Tingsanchali, |
| Relator term | Examination committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Jorgensen, Sven Erik, |
| Relator term | Examination committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Austrian Government, |
| 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 | Dissertation ; |
| Volume/sequential designation | no. EV-93-2 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B15978">http://203.159.5.9/ait-thesis/detail.php?q=B15978</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10598091 |
| b | mnait |
| c | y |
| 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 |
| -- | y |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 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 : 30050003058327 |
| CREATED | CREATED : 1995-10-15 |
| RECORD Id | RECORD # : i1075748x |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050003058335 |
| CREATED | CREATED : 1995-10-15 |
| RECORD Id | RECORD # : i10757491 |
| LPATRON | LPATRON : 1018282 |
| LCHKIN | LCHKIN : 2007-08-01 |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 5 |
| -- | TOT RENEW : 2 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120556435 |
| CREATED | CREATED : 2013-11-29 |
| RECORD Id | RECORD # : i12749473 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160004957 |
| CREATED | CREATED : 2016-01-02 |
| RECORD Id | RECORD # : i12876112 |
| 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 Diss. no. EV-93-2 | 30050003058327 | 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 | 50.00 | AIT Diss. no. EV-93-2 | 30050003058335 | 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 | 50.00 | AIT Diss. no. EV-93-2 | 30050120556435 | 18/08/2026 | 3 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Diss. no. EV-93-2 | 30050160004957 | 18/08/2026 | 18/08/2026 | 40-Archives |