当前位置:Home > Online First

Online First

Study on the efficiency of denitrification and phosphorus removal in municipal wastewater enhanced by elemental sulfur

Received Date:2024-07-08 Revised Date:2024-08-19

DOI:10.20078/j.eep.20240902

Abstract:The treatment of sulfur-containing wastewater from industries such as petroleum refineries and tanning can result in the... Open+
Abstract:

The treatment of sulfur-containing wastewater from industries such as petroleum refineries and tanning can result in the production of a significant amount of low-cost elemental sulfur ( S^0 ). In recent years, numerous studies have focused on the use of inexpensive sulfur sources to improve denitrification and nitrogen removal efficiency in wastewater treatment. However, there has been relatively less research on enhancing phosphorus removal through the use of sulfur sources. Therefore, after successfully establishing a denitrifying phosphorus removal system with an influent carbon source concentration of 200 mg/L (in terms of COD), 67.5 mg/L, of S^0 was continuously added to the reactor in each cyele to investigate its potential for enhancing denitrifying phosphorus removal efficieney. The results demonstrated that the addition of S^0 strengthened the reductive environment during the anaerobic phase, facilitating anaerobic phosphorus release. Additionally, it served as an electron donor to supply electrons during the anoxic phase. Furthermore, the addition of S^0 led to a decrease in relative activities among glycogen accumulating organisms, while there was an increase in relative abundance among Thiothrix bacteria, increasing from 18.5% to 23.6%, Consequently, the phosphorus removal rate increased from 92.3%±9.7% to 97.2%±1.9%, with a higher average and reduced fluctuation and nitrate removal increased from 50 mg/L (in terms of N) to approximately 62 mg/L (in terms of N).

Close-

Authors:

  • ZHOU Miao
  • ZHOU Lichang
  • CHENG Boyi
  • GUO Gang*

Units

  • Department of School of Environmental Science and Engineering, University of Huazhong University of Science and Technology

Keywords

  • Elemental sulfur
  • Denitrification phosphorus removal
  • Thiothrix
  • Sulfurcontaining wastewater
  • Sulfur bacteria

Citation

ZHOU Miao, ZHOU Lichang, CHENG Boyi, GUO Gang. Study on the efficiency of denitrification and phosphorus removal in municipal wastewater enhanced by elemental sulfur[J/OL]. Energy Environmental Protection: 1-10[2024-09-12].https://doi.org/10.20078/j.eep.20240902.

Add: No.288, Gongxiu Road, Xiaoshan District, Hangzhou City, Zhejiang Province.
Post Code: 311201
Tel: 0571-82989702, 19558121964
E-mail: office@eep1987.com
Website Copyright © Editorial Department of Energy Environmental Protection 京ICP备05086979号