YANZi-chun,YANGMing-xia,GAOJian-jun.Denitrification Performance of Sustained?release Carbon Source Embedded in Corn with Polyvinyl Alcohol[J].China Water & Wastewater,2024,40(11):89-94.
Denitrification Performance of Sustained?release Carbon Source Embedded in Corn with Polyvinyl Alcohol
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第11期
Page:
89-94
Column:
Date of publication:
2024-06-01
- Abstract:
- This paper prepared a sustained-release carbon source (PECP) with corn as the effective constituent by polyvinyl alcohol embedding method, so as to solve the problem of poor nitrogen removal performance caused by insufficient carbon source in advanced treatment of municipal wastewater. The scanning electron microscopy (SEM) observation showed that the surface of PECP was rough and porous, which was suitable for the attached growth of microbes and provided channels for organic matter release. The carbon release and biological denitrification test showed that the concentration of organic matter released by PECP approached the maximum value on the 20th day and did not decrease significantly until the 40th day, and the carbon release process satisfied the second?order kinetic equation. When the influent TN concentration was 51.42 mg/L, the TN removal rate of the denitrifying filter packed with PECP was 74.44%, which was 39.36% higher than that without PECP. The stable carbon release rate, long service life and high nitrogen removal efficiency of PECP provide a new idea for the development of low cost sustained-release carbon sources．
Last Update:
2024-06-01