Novel start-up process for the efficient degradation of high COD wastewater with up-flow anaerobic sludge blanket technology and a modified internal circulation reactor
| Autor: | Wudi Zhang, Zhao Xingling, Li Huang, Tang Zhengkang, Chengbo Zhang, Wu Kai, Wang Changmei, Liu Jianfeng, Chengxian Wang, Fang Yin, Jing Liu, Yang Hong, Bin Yang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Environmental Engineering Methanogenesis Bioengineering 010501 environmental sciences Wastewater complex mixtures 01 natural sciences Waste Disposal Fluid Methane Methanosaeta chemistry.chemical_compound Bioreactors 010608 biotechnology Anaerobiosis Waste Management and Disposal 0105 earth and related environmental sciences Biological Oxygen Demand Analysis biology Sewage Renewable Energy Sustainability and the Environment Chemistry Chemical oxygen demand technology industry and agriculture General Medicine Methanosarcina equipment and supplies Pulp and paper industry biology.organism_classification Dilution Internal circulation reactor |
| Zdroj: | Bioresource technology. 308 |
| ISSN: | 1873-2976 |
| Popis: | To avoid wastage of water resources and operating cost increases caused by the traditional start-up process of large amounts of dilution influent chemical oxygen demand (COD), a novel start-up process (NSP) was developed and verified with water hyacinth juice (WHJ) on an up-flow anaerobic sludge blanket (UASB) and modified internal circulation (MIC) reactor. Results show that UASB and MIC reactors were started successfully and that the MIC reactor exhibited a superior performance. The NSP time of the MIC reactor (46 days) was less than that of the UASB reactor (52 days), although the start-up organic loading rate (OLR) of the MIC reactor was higher than that of the UASB reactor. Interestingly, high-throughput sequencing analysis indicated that the reactor configuration significantly impacted the microbial diversity, however, the UASB and MIC reactors had similar predominant methanogens: Methanosaeta and Methanosarcina. Therefore, acetoclastic methanogenesis is the primary pathway of methane formation during WHJ treatment. |
| Databáze: | OpenAIRE |
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