Removal of Nitrate by ‘Asphyxiant Absorbent Filtration’ and Carbon Addition
Bibliographic record
Abstract
Nitrogen removal using a new technology suitable for smaller and isolated flows is being tested at commercial sites in Ontario. The ‘WaterNOx’ system is a variant of the ‘post-anoxic’ biological anoxic filtration (BAF) process with carbon source addition to nitrified effluent (e.g., Crites and Tchobanoglous, 1998). The system utilizes absorbent filter medium in asphyxiant, stagnant air conditions to form an ‘anoxic absorbent filter’ (AAF). This article describes the nitrification-denitrification system retrofitted into existing commercial sewage treatment systems (Figure 1), using three carbon sources and different loading rates, discusses observed alkalinity stoichiometry, and predicts results expected at various stages of the process.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".