4.7 Article

Decomposition of pollutants from domestic sewage with the combination systems of hydrolytic acidification coupling with constructed wetland microbial fuel cell

期刊

JOURNAL OF CLEANER PRODUCTION
卷 319, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.jcliepro.2021.128650

关键词

Microorganism; Hydrolytic acidification; Constructed wetland; Microbial fuel cell

资金

  1. Major Foundation of Hebei Educational Committee [ZD2019067]
  2. Tangshan science and technology innovation team training plan [19130208C]
  3. Hebei Province science and technology project [17273802D]

向作者/读者索取更多资源

The study demonstrated that the HFA-CWMFC system achieved optimal removal rates and produced more organic acids beneficial for follow-up reactions. Analysis revealed that Firmicutes played a key role in enhancing power generation capacity and increasing pollutant removal rates in the HFA-CWMFC system. These findings suggest promising application prospects for the combined systems in sewage treatment and energy generation.
In this research, three highly efficient combination systems, including constructed wetland microbial fuel cell (CWMFC), hydrolytic sludge acidification coupling with constructed wetland microbial fuel cell (HSA-CWMFC) and hydrolytic filler acidification coupling with constructed wetland microbial fuel cell (HFA-CWMFC), were applied to the removal of pollutants from domestic sewage. The three combination systems could effectively treat domestic sewage and generate clean energy. The power generated by CWMFC, HSA-CWMFC, and HFA-CWMFC was 0.36 W/m(2), 0.40 W/m(2), and 0.43 W/m(2), respectively. The results indicated that the removal rates of chemical oxygen demand (COD), total organic carbon (TOC), total phosphorus (TP), ammonia nitrogen (NH3-N), and nitrate nitrogen (NO3-N) in HFA-CWMFC could achieve the optimal values of 91.01%, 90.63%, 95.35%, 86.11%, and 91.01%, respectively. In addition, HFA-CWMFC produced more organic acids than HSA-CWMFC, which was beneficial to the follow-up reaction. Through qualcomm sequencing analysis, it could be seen that Firmicutes, which could enhance power generation capacity and increase removal rates of pollutants, played an important role in HFA-CWMFC. The results demonstrated that the three combined systems had excellent application prospects for sewage treatment and energy generation.

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