Relations Between COD Removal and Biofilm Thickness and Density of Downflow Anaerobic Turbulent Bed
Why this work is in the frame
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Bibliographic record
Abstract
A reactor,called a downflow anaerobic turbulent bed,is introduced,in which the circulation is forced by biogas to ensure fluidization of floating carrier particles.When the operational range of the reactor is 6 22?kg/(m 3·d) and the hydraulic retention time 0.25～0.94?d,the COD Cr removal efficiency remains 65%～85%,and the bio film thickness is rather small(5～30?μm),while the bio film density is high (70?g/L).Experimental results show that the biofilm thickness and density increase with the decrease of COD removal.Bioactivity kept at a high level in the reactor indicates that violent turbulence and shear are beneficial for the growth of microbe and the formation of a thin,dense and active film.Meanwhile,the volatile solid detachment at a high organic loading rate (OLR) increases quasi linearly with COD removal and with the decrease of the amount of solid in the reactor.
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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 | 0.000 |
| 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 it