LIANGShuo,YUNDan-dan,WANGYan-zhi,et al.Advanced Nitrogen Removal of Sulfur Autotrophic Denitrification Filter under Low Temperature in Winter: A Pilot?scale Study[J].China Water & Wastewater,2025,41(3):14-21.
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Advanced Nitrogen Removal of Sulfur Autotrophic Denitrification Filter under Low Temperature in Winter: A Pilot?scale Study

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第41卷 Number: 第3期 Page: 14-21 Column: Date of publication: 2025-02-01
Author(s):
LIANG　Shuo1; 2;  YUN　Dan-dan1;  WANG　Yan-zhi1;  FU　Min3; 4;  XIE　Rui-rui1;  ASHAN　Gulimire1;  WANG　Fei-yu1;  LI　Si-min4; 5
（1. Beijing World’s Water Technology Co. Ltd.， Beijing 102308， China； 2. College of Management and Economics， Tianjin University，Tianjin 300072， China； 3. Handan Municipal Wastewater Treatment Co. Ltd.， Handan 056002， China； 4. Handan Key Laboratory of Urban Water Utilization Technology， Handan 056038， China； 5. Hebei Technology Innovation Center of Water Pollution Control and Water Ecological Remediation， Hebei University of Engineering，Handan 056038， China）
Keywords:
sulfur autotrophic denitrification;  heterotrophic denitrification;  denitrification deep bed filter;  secondary effluent from wastewater treatment plant;  low temperature;  microbial community
Abstract:
Sulfur autotrophic denitrification (SAD) filters have attracted significant attention as an advanced nitrogen removal alternative to heterotrophic denitrification (HD) filters. However, the limited engineering data for SAD filters has led to a shortage of design parameters and insufficient operation and management experience. A SAD filter with a capacity of 1 000 m?/d was constructed at the Handan West Wastewater Treatment Plant. The nitrogen removal performance was evaluated under varying influent loads at a challenging temperature of 15.1 ℃ to assess the effectiveness of SAD for advanced nitrogen removal from secondary effluent. The results showed that the concentration of NO3--N in the effluent of SAD filter decreased to 5 mg/L, and the total nitrogen removal rate reached 80.7%. The SAD filter also demonstrated strong resistance to shocks. Microbial community analysis revealed that Sulfurimonas and Thiobacillus were the dominant species in the SAD filter, distinctly different from the microbial profile in the HD filter. Economically, the SAD filter reduced reagent costs by approximately 37.9% compared to the HD filter. Overall, the SAD filter offers an efficient, cost?effective solution for advanced nitrogen removal without requiring additional land area.
Last Update: 2025-02-01