YANGXue,WANGYan,ZHIYao,et al.Advanced Nitrogen Removal from Swine Wastewater Using Circulating Fluidized Autotrophic Denitrification Tower[J].China Water & Wastewater,2024,40(10):132-136.
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Advanced Nitrogen Removal from Swine Wastewater Using Circulating Fluidized Autotrophic Denitrification Tower

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第10期 Page: 132-136 Column: Date of publication: 2024-05-17
Author(s):
YANG　Xue1;  WANG　Yan1; 2;  ZHI　Yao2;  ZHOU　Zheng1;  LI　Ji1; 3; 4
（1. School of Environment and Civil Engineering， Jiangnan University， Wuxi 214000， China； 2. Wuxi Puhui Environmental Protection Technology Co. Ltd.， Wuxi 214122， China； 3. Jiangsu Key Laboratory of Anaerobic Biotechnology， Wuxi 214122， China； 4. Jiangsu Collaborative Innovation Center of Water Treatment Technology and Materials， Suzhou 215009， China）
Keywords:
swine wastewater;  advanced nitrogen removal;  sulfur?driven autotrophic denitrification;  circulating fluidized tower
Abstract:
The total effluent nitrogen concentration in a swine wastewater treatment station with two-stage AO process was high, which required deep nitrogen removal. Therefore, the circulating fluidized autotrophic denitrification tower was designed after the secondary sedimentation tank and its advanced nitrogen removal efficacy was then evaluated. The results showed that the effluent NO3--N concentration remained below 5 mg/L and the nitrogen loading rate reached 240 mgNO3--N/(L·d) in winter after the stable operation of the circulating fluidized autotrophic denitrification tower, which could save the operation cost of 200 to 400 thousand yuan/a compared to the conventional heterotrophic denitrification process.
Last Update: 2024-05-17