Performance of Integrated Fixed-Film Activated Sludge (IFAS) under Variable Organic Load
Bibliographic record
Abstract
In this research, a pilot plant was constructed and operated using the Integrated Fixed Film Activated Sludge (IFAS) to study its performance for municipal wastewater treatment.The experimental work was conducted at Zenien WWTP under variable organic loads.The system was operated under ambient temperature between 16 and 28 °C.The media used in the pilot plant was of the type (FAB) with a specific surface area of 400 m 2 /m 3 and occupied 50% of the reactor's volume.The solid retention time (SRT) was 15 days during the start-up stage, then reduced to 10 days for the rest of the experiments, pH was (6.2 -7.8), the flow rate was (3.61 L/hr), hydraulic retention time (HRT) was around 6 hrs over the whole experiment.The pilot plant was operated in stages each with a different organic load and lasted for about 60 days.The pilot plant proved its efficiency in wastewater treatment using IFAS system.Under low organic load, the BOD, COD and TSS removal reached 90%, 88% and 94.6% respectively.Under medium organic load, the BOD, COD and TSS removal reached 93%, 87%, and 87.8%, respectively.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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".