Wastewater COD characterization: RBCOD and SBCOD characterization analysis methods
| Autor: | Xianglong Xu, Lu Qi, Yuting Shao, Shuai Liu, Hongchen Wang, Guo-hua Liu, Jingbing Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Multidisciplinary
Science Chemical oxygen demand Biomass 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology Pulp and paper industry 01 natural sciences Biochemistry Article Environmental sciences Respirometry Wastewater Endogenous respiration Environmental science Degradation (geology) Medicine Sewage treatment 0210 nano-technology Analysis method 0105 earth and related environmental sciences |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | Wastewater characterization is the basis for process design and operation optimization of wastewater treatment plants (WWTPs). In this work, a comprehensive study of the respirometry method has been performed to evaluate the biodegradable organic matters of wastewater. First, the optimal initial substrate to biomass ratio (S0/X0) was confirmed. Second, under the optimal S0/X0, the degradation curves of wastewater carbon oxygen demand (COD) components rapidly biodegradable COD (RBCOD) and slowly biodegradable COD (SBCOD) were obtained. Third, the Mann–Kendall test was performed to confirm the time point (t2) when endogenous respiration levels were reached, and the hydrolysis model was used to determine the time point (t1) of the SBCOD degradation stage. Considering the results, an adequate wastewater COD characterization method for RBCOD and SBCOD has been proposed. This study provides strong support to carry out effective and feasible process design, process diagnosis and optimization capability, can help achieve refined and stable operational management of WWTPs. |
| Databáze: | OpenAIRE |
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