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- Title
淹水底泥反硝化消纳面源氮潜力的影响因子分析.
- Authors
史祯琦; 房 凯; 周佳华; 张文娟; 佘冬立
- Abstract
The microbial-dominated denitrification process is the main way to absorb the loss of non-point source nitrogen in flooded sedi⁃ ments. At present,there are plentiful researches on the influence of environmental factors on the denitrification process,but the law of deni⁃ trification under the influence of periphyton is still unclear. Through the submerged sediment culture experiment,the nitrogen denitrification rate,and total of 17 indicators of the overlying water-peripheral organisms-sediment system influencing denitrification process are mea⁃ sured,and the PLSR model is used to explore the influence of various factors on the denitrification and absorption of non-point source nitro⁃ gen in the sediment,and to find out the main control factor and avoid the problem of collinearity between factors. The results show that the pH,NH4+ -N,NO3- -N,DOC in the overlying water and the CHI in the periphyton are the main influencing factors in the denitrification pro⁃ cess of the sediment. More attention is paid to the research on periphyton. The water-soil interface can demonstrate the mechanism of nitro⁃ gen denitrification loss process and provide a theoretical basis for non-point source pollution control.
- Subjects
NONPOINT source pollution; DENITRIFICATION; PERIPHYTON; SEDIMENTS; NITROGEN removal (Water purification); NITROGEN
- Publication
China Rural Water & Hydropower, 2022, Issue 6, p34
- ISSN
1007-2284
- Publication type
Article