期刊
BIORESOURCE TECHNOLOGY
卷 297, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.122430
关键词
Landfill leachate; PN-Anammox; Coupling form; Pilot-scale; Nitrogen removal
资金
- Natural Science Foundation of China [51938010]
- Suzhou Science and Technology Plan Project-Minsheng Project [SS201804-02]
- National Key Research and Development Programme of China [2016YFC 0401103]
- Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment
The effects on nitrogen removal from landfill leachate were compared between the denitrification (DN) direct coupling in Partial nitrification (PN)-Anammox (DN + (PN-Anammox)) and pre-DN followed by PN-Anammox (DN-PN-Anammox). Both processes can achieve coupling and high nitrogen removal. However, the DN + (PNAnammox) process was not conducive to the treatment of high-COD wastewater. The total nitrogen removal rate (TNRR) and total nitrogen removal efficiency (TNRE) were stable at 0.31 kg/(m(3).d) and 76.3%. When UASB was added to denitrification and transform the process into DN-PN-Anammox, the influent NH4+-N and COD concentrations were increased to 2230 and 2612 mg/L, TNRR and TNRE reached 0.45 kg/(m(3).d) and 96.7%, respectively. The DN-PN-Anammox process not only was able to make full use of degradable COD in wastewater to realize the NO3--N removal, but also benefited the growth of autotrophic bacteria. The DN-PN-Anammox reduced the oxygen supply and was more conducive to the treatment of highly-concentrated mature landfill leachate.
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