Bibliographic record
Abstract
Treatment of Waste Water: A Reed Bed-Environmental Case History Maurice Guirguis Maurice Guirguis Schlumberger Search for other works by this author on: This Site Google Scholar Paper presented at the SPE International Conference on Health, Safety, and Environment in Oil and Gas Exploration and Production, Calgary, Alberta, Canada, March 2004. Paper Number: SPE-86673-MS https://doi.org/10.2118/86673-MS Published: March 29 2004 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Guirguis, Maurice. "Treatment of Waste Water: A Reed Bed-Environmental Case History." Paper presented at the SPE International Conference on Health, Safety, and Environment in Oil and Gas Exploration and Production, Calgary, Alberta, Canada, March 2004. doi: https://doi.org/10.2118/86673-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE International Conference and Exhibition on Health, Safety, Environment, and Sustainability Search Advanced Search Abstract A reed bed or constructed wetland has proven to be an effective, sustainable, reliable, and economical treatment method for sewage or industrial waste. The reed-bed treatment systems in desert area 103, Libya, are self-contained, artificially engineered wetland ecosystems. They are designed to optimize the microbiological, chemical, and physical processes naturally occurring in the wetland. This paper describes the construction of the treatment plant, its wastewater treatment capacity, and the positive impact it has had on the environment and the local community.The reed-bed wastewater treatment plant in desert area 103 is the first wastewater treatment facility in the Libyan desert oil fields. It can treat up to 350 m3 of wastewater effluent per day using automatic submersible pumps. The reed bed is lined with plastic sheets underneath the gravel to prevent effluent from seeping underground. Wastewater is discharged to the reed bed for treatment after primary tank screening and settling. Wastewater enters the reed bed by gravity via clean stone for biological treatment on the stone surface.The common reed Phragmites australis is indigenous to the Libyan desert 103 area. It has the ability to transfer atmospheric oxygen from its leaves down through its stem, porous septa, and rhizomes, and out into the rhizosphere (root system). As a result, a very high population of microorganisms exists in the rhizosphere, in zones of aerobic, anoxic, and anaerobic conditions.The plant is currently treating between 60 and 80 m3 of wastewater per day. The reed-bed wastewater treatment project improved the scenery and odor of the wastewater area, protected the potable water well in the middle of the camp and the water table, and reduced the ecological impact on the endangered wildlife in the area. This project has shown that treating wastewater in remote locations is feasible. Keywords: dimension, reed tree, liquor level, primary tank, bacteria, submersible pump, upstream oil & gas, pvc pipe, gravity, society of petroleum engineers Subjects: Environment, Waste management Copyright 2004, Society of Petroleum Engineers You can access this article if you purchase or spend a download.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.005 | 0.002 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".