The Treatability Study of High Strength Pet Food Wastewater: A Continuous Flow Aerobic System Performance Evaluation
Bibliographic record
Abstract
This paper presents continuous flow two stage activated sludge treatability studies for the treatment of pet food wastewaters characterized by oil & grease concentration of 50,000-66,000 mg l(-1), total COD & BOD concentrations of 100,000 mg l(-1) and 80,000 mg l(-1), respectively. A pre-treatment system, dissolved air flotation (DAF) achieved 97-99% reduction in oil and grease down to about 400-800 mg l(-1). The pilot experimental results showed that for the DAF pretreated effluent, 97% soluble COD removal efficiency can be achieved by using two stage conventional activated sludge system at a 6-7 days HRT and applied initial soluble COD to biomass ratio of 1.17 mg COD mg VSS. Meanwhile, the system achieved 99.9% soluble BOD removal. Analysis of system kinetics indicated that this particular wastewater is very difficult to biodegrade, with an extremely high half velocity constant "Ks" of 5800 mg l(-1). The research showed the potential applications of activated sludge systems for the treatment of high oil and grease wastewater.
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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 | 0.001 | 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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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".