Impact of Dissolved Oxygen Concentration and DPAOs: Nitrifiers Population Ratio on Nutrient Removal in EBPR Process
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
This study reports the effect of denitrifying phosphorus accumulating organisms (DPAOs) at low DO on simultaneous nitritation-denitritation and enhanced biological phosphorus removal process. DPAOs were enriched in a sequencing batch reactor (SBR) under anaerobic-anoxic-aerobic condition with an active DPAO population of about 30%. The nitrite-oxidizing bacteria (NOB) washout from the nitrifying sludge was obtained in a separate SBR operated under anoxic-aerobic conditions. At a 1:1 ratio of nitrifying to DPAOs sludge neither nitrogen nor phosphorus removal was significantly affected at DO limited condition (0.5 mg/L DO). However, as DPAOs to nitrifiers population ratio was further increased to 1:4, the effect of low DO was found to be more significant on nitrification than P-removal. This signifies the competitive advantages of DPAOs over nitrifiers under DO limited condition.
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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 | 0.001 |
| 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 it