期刊
BIORESOURCE TECHNOLOGY
卷 295, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.122287
关键词
Johannesburg-Sulfur autotrophic; denitrification system (JHB-SAD); Landfill leachate; Municipal wastewater; Efficient nutrients removal; Bacterial community structure
资金
- National Natural Science Foundation of China [51908399]
- Tianjin Education Commission Scientific Research Plan [2017KJ056]
- Tianjin Natural Science Foundation [18JCQNJC78300, 19JCQNJC07600]
Johannesburg-Sulfur autotrophic denitrification (JHB-SAD) system was investigated for the combined treatment of leachate and municipal wastewater with low strength and low COD/TN ratio. The average removal efficiencies for chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP) were 85.2%, 96.2% and 75.8%, respectively. The municipal wastewater and leachate (dosing of 2.1%, v/v) can be treated via the JHB-SAD system to achieve efficient nutrients removal. The mass balance calculations suggested that 58.1-69.8% TN was removed in JHB unit and 32.9-41.2% TN in SAD unit. Further, the denitrifying phosphorus removal process occurred in the anoxic zone. EEM-PARAFAC analysis found that the protein-like materials were more efficiently removed than fulvic-like materials in JHB-SAD system. The tryptophan-like materials had the most positive linear relationship with the COD concentrations. The bacterial community was difference between JHB and SAD unit. Furthermore, bacteria abundance relating to nitrogen removal increased with additional leachate.
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