Volume 2 Issue 2
Jun.  2017
Article Contents
Turn off MathJax

Citation:

Effect of nutritional bio-stimulants (NBS) on the biological treatment of the wastewater from traditional Chinese medicine production

  • Corresponding author: Liming Jing, tel:+86-138-9191-4541
  • Fund Project:

    The authors would like to take this opportunity to acknowledge the support from State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, (201604).

  • Nutritional bio-stimulant (NBS) technology is an attractive method to improve the efficiency of biological treatment of wastewater by stimulating the microbial growth and increasing species diversity. In this study, a commercial NBS, which consisted of organic acids, absorbable nitrogen and phosphorus and trace elements, was applied as a nutrient supplement to replace conventional chemical fertilizer (CCF) in aerobic biological treatment of a traditional Chinese medicine (TCM) wastewater. A mill trials was carried out in a commercial scale TCM wastewater treatment system for 41 days. The process performance and active sludge characteristics were continuously monitored when the CCF was replaced with NBS gradually in the system. It was found that the chemical oxygen demand (COD) of the effluent decreased from 118 to 89 mg·L-1, well below the 100 mg·L-1 wastewater discharge limit, when the CCF was replaced with NBS completely. More importantly, the ammonia concentration of the effluent stayed constantly low in the NBS stage of the trial, indicating that the added NBS was completely utilized by the microorganisms. In contrast, the effluent ammonia concentration was gradually increasing and exceeded the limit in the CCF stage of the trial, indicating that the CCF was not fully utilized by the microbes. The improved perfromance of the aerobic wastewater treatment system was attributed to the fact that the NBS nutrients were more bio-available than the CCF to the microorganisms.
  • 加载中
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Article Metrics

Article views(194) PDF downloads(0) Cited by()

Related
Proportional views

Effect of nutritional bio-stimulants (NBS) on the biological treatment of the wastewater from traditional Chinese medicine production

    Corresponding author: Liming Jing, tel:+86-138-9191-4541
  • a. College of Bioresource Chemical and Materials Engineering, Shannxi University of Science &Technology, Xi'an, 710021, China;
  • b. College of Environmental Science and Engineering, Shannxi University of Science &Technology, Xi'an, 710021, China
Fund Project:  The authors would like to take this opportunity to acknowledge the support from State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, (201604).

Abstract: Nutritional bio-stimulant (NBS) technology is an attractive method to improve the efficiency of biological treatment of wastewater by stimulating the microbial growth and increasing species diversity. In this study, a commercial NBS, which consisted of organic acids, absorbable nitrogen and phosphorus and trace elements, was applied as a nutrient supplement to replace conventional chemical fertilizer (CCF) in aerobic biological treatment of a traditional Chinese medicine (TCM) wastewater. A mill trials was carried out in a commercial scale TCM wastewater treatment system for 41 days. The process performance and active sludge characteristics were continuously monitored when the CCF was replaced with NBS gradually in the system. It was found that the chemical oxygen demand (COD) of the effluent decreased from 118 to 89 mg·L-1, well below the 100 mg·L-1 wastewater discharge limit, when the CCF was replaced with NBS completely. More importantly, the ammonia concentration of the effluent stayed constantly low in the NBS stage of the trial, indicating that the added NBS was completely utilized by the microorganisms. In contrast, the effluent ammonia concentration was gradually increasing and exceeded the limit in the CCF stage of the trial, indicating that the CCF was not fully utilized by the microbes. The improved perfromance of the aerobic wastewater treatment system was attributed to the fact that the NBS nutrients were more bio-available than the CCF to the microorganisms.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return