Експериментальне дослідження процесу біологічної очистки стічних вод із застосуванням мембранного біореактору
Bibliographic record
Abstract
Effectiveness of operation of the membrane bioreactor (MBR) for wastewater treatment with the use of the biological method was considered. The pilot studies were carried out in the test membrane bioreactor, manufactured by company "Alfa Laval" (Denmark). The process of biological treatment of wastewater using the membrane bioreactor makes it possible to intensify the operation of biological treatment plants due to the lack of facilities for settling the sewers, an increase in the dose of active sludge up to 12–13 g/l; the process of deposition is replaced with filtration, washing of membrane modules can be carried out without emptying the tanks and without taking modules out of the tanks. In the process of testing of the membrane bioreactor, based on the module plant, manufactured by company "Alfa Laval" (Denmark) for treatment of domestic wastewater, the treatment mode that meets the requirements for discharge was achieved. Treatment effectiveness by basic indicators was: COD – 93 %, BOD5 – 99 %, suspended substances – 98.5 %, ammonium nitrogen – 98.5%. Operation efficiency of MBR as for nitrates amounted to 89 % after adjustment of reagent’s dose (40–50 mg/l) and the oxygen dose in the nitrification zone (2–3 mg/l). Efficiency of 98.6% for phosphates was achieved after the introduction of the reagent aluminum sulfate with the dosage of 40–50 mg/l.The study conducted has made it possible to obtain the consistent operation mode of the MBR with ensuring effective process of wastewater treatment. Dependences of wastewater treatment efficiency on the MBR as for major contaminants (COD, BOD5, nitrogen compounds and phosphorus) were shown. This enables meeting the strict requirements for wastewater discharge into water bodies and decreasing the cost value of the treatment through a decrease in power consumption. The mechanism of the MBR operation under conditions of treatment of actual wastewater, which allows determining the conditions of the use of the MBR in the technology of the biological wastewater treatment was studied.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.007 | 0.003 |
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".