A simple respirogram-based approach for the management of effluent from an activated sludge system
| Autor: | Han-Qing Yu, Zhi-Hua Li, Cheng-Jian Yang, Yuan-Mo Zhu, Tian-Yu Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
0208 environmental biotechnology Biomass Bioengineering 02 engineering and technology 010501 environmental sciences Wastewater 01 natural sciences Waste Disposal Fluid Bioreactors Waste Management and Disposal Effluent 0105 earth and related environmental sciences Sewage Renewable Energy Sustainability and the Environment General Medicine Pulp and paper industry 020801 environmental engineering Waste treatment Activated sludge Environmental science Water treatment Sewage treatment Respiration rate |
| Zdroj: | Bioresource technology. 261 |
| ISSN: | 1873-2976 |
| Popis: | Managing wastewater treatment plant (WWTP) based on respirometric analysis is a new and promising field. In this study, a multi-dimensional respirogram space was constructed, and an important index Res/t (ratio of in-situ respiration rate to maximum respiration rate) was derived as an alarm signal for the effluent quality control. A smaller Res/t value suggests better effluent. The critical R'es/t value used for determining whether the effluent meets the regulation depends on operational conditions, which were characterized by temperature and biomass ratio of heterotrophs to autotrophs. With given operational conditions, the critical R'es/t value can be calculated from the respirogram space and effluent conditions required by the discharge regulation, with no requirement for calibration of parameters or any additional measurements. Since it is simple, easy to use, and can be readily implemented online, this approach holds a great promise for applications. |
| Databáze: | OpenAIRE |
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