Biological removal of pharmaceuticals from hospital wastewater in a pilot-scale staged moving bed biofilm reactor (MBBR) utilising nitrifying and denitrifying processes
| Autor: | Klaus Litty, Sabine Lindholst, Christina Sund, Magnus Christensson, A. T. Christensen, Henrik Rasmus Andersen, Kim Sundmark, Kamilla Marie Speht Kaarsholm, Ravi Kumar Chhetri, Gordon Tze Hoong Ooi, Kai Bester, Caroline Kragelund, Kai Tang |
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| Rok vydání: | 2018 |
| Předmět: |
Biochemical oxygen demand
Pilot-scale Environmental Engineering 0208 environmental biotechnology Biomass Bioengineering 02 engineering and technology Wastewater 010501 environmental sciences Waste Disposal Fluid 01 natural sciences Degradation Denitrifying bacteria Bioreactors Waste Management and Disposal 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment Chemistry Moving bed biofilm reactor Biofilm Chemical oxygen demand General Medicine Pulp and paper industry Nitrification Hospital wastewater Hospitals 020801 environmental engineering Pilot plant Pharmaceutical Preparations Biofilms Denitrification Pharmaceuticals Degradation (geology) |
| Zdroj: | Ooi, G T H, Tang, K, Chhetri, R K, Kaarsholm, K M S, Sundmark, K, Kragelund, C, Litty, K, Christensen, A, Lindholst, S, Sund, C, Christensson, M, Bester, K & Andersen, H R 2018, ' Biological removal of pharmaceuticals from hospital wastewater in a pilot-scale staged moving bed biofilm reactor (MBBR) utilising nitrifying and denitrifying processes ', Bioresource Technology, vol. 267, pp. 677-687 . https://doi.org/10.1016/j.biortech.2018.07.077 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2018.07.077 |
| Popis: | Hospital wastewater contains high concentrations of pharmaceuticals, which pose risks to receiving waters. In this study, a pilot plant consisting of six moving bed biofilm reactors (MBBRs) in series (with the intention to integrate Biological Oxygen Demand (BOD) removal, nitrification and denitrification as well as prepolishing Chemical Oxygen Demand (COD) for ozonation) was built to integrate pharmaceutical removal and intermittent feeding of the latter reactors aimed for micropollutant removal. Based on the experimental resultss, nitrifying MBBRs achieved higher removal as compared to denitrifying MBBRs except for azithromycin, clarithromycin, diatrizoic acid, propranolol and trimethoprim. In the batch experiments, nitrifying MBBRs showed the ability to remove most of the analysed pharmaceuticals, with degradation rate constants ranging from 5.0 × 10−3 h−1 to 2.6 h−1. In general, the highest degradation rate constants were observed in the nitrifying MBBRs while the latter MBBRs showed lower degradation rate constant. However, when the degradation rate constants were normalised to the respective biomass, the intermittently fed reactors presented the highest specific activity. Out of the 22 compounds studied, 17 compounds were removed with more than 20%. |
| Databáze: | OpenAIRE |
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