YANGLi-li,CHENWen-ting,CHENHong-wei,et al.Performance of Microalgae-bacteria Symbiotic System for Enhanced Treatment of Tailwater from Mustard Tuber Wastewater Treatment Plants[J].China Water & Wastewater,2024,40(13):73-78.
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Performance of Microalgae-bacteria Symbiotic System for Enhanced Treatment of Tailwater from Mustard Tuber Wastewater Treatment Plants

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第13期 Page: 73-78 Column: Date of publication: 2024-07-01
Author(s):
YANG　Li-li1; 2;  CHEN　Wen-ting3;  CHEN　Hong-wei1; 2;  CHEN　Shao-wei1; 2;  FU　Guo-kai1; 2
（1. College of Environment and Ecology， Chongqing University， Chongqing 400045， China； 2. Key Laboratory of Three Gorges Reservoir Region’s Eco?Environment ， Chongqing University， Chongqing 400045， China； 3. Hubei Communications Planning and Design Institute Co. Ltd.， Wuhan 430051， China）
Keywords:
tailwater from mustard tuber wastewater treatment plants;  biofilm process;  immobilized Chlorella;  microalgae-bacteria symbiotic system
Abstract:
Targeting the high salinity, nitrogen, and phosphorus pollutants present in the tailwater from mustard tuber wastewater treatment plants, as well as the challenges associated with existing treatment technologies, this study aimed to investigate the treatment efficiency of biofilm process, immobilized Chlorella, and microalgae-bacteria symbiotic system on the tailwater from a mustard tuber wastewater treatment plant. The biofilm process demonstrated the most effective treatment for organic matter, with COD removal rate of 92.18%, followed by the microalgae-bacteria symbiotic system at 83.10%. Conversely, the immobilized Chlorella exhibited the least favorable treatment efficiency, resulting in a significant increase of 78.44% in effluent COD. In terms of nitrogen and phosphorus pollutants, the microalgae-bacteria symbiotic system proved to be highly effective, achieving 100% removal rate for NH4+-N, TN, and PO43--P. The second treatment performance of immobilized Chlorella was observed, with NH4+-N, TN, and PO43--P removal rates of 100%, 99.95% and 96.70%, respectively. The treatment performance of biofilm process was the worst, with removal rates of NH4+-N, TN, and PO43--P at 48.06%, 62.80%, and 10.69% respectively. It was evident that the microalgae-bacteria symbiotic system not only offered the advantages of the biofilm process for efficient removal of organic matter, but also provided the benefits of immobilized Chlorella for effective elimination of nitrogen and phosphorus. This presented an efficient and viable approach for treating tailwater from mustard tuber wastewater treatment plants.
Last Update: 2024-07-01