EFFECTS OF CARBON RESOURCE ADDITON STRATEGIES ON PHOSPHORUS AND NITROGEN REMOVAL AND MICROBIAL COMMUNITY STRUCTURE IN AN A<sup>2</sup>/O SYSTEM

YAO Chuang; LIU Jianxin; ZHAO Ziling; LIN Guoying; LIU Hui

doi:10.13205/j.hjgc.202201004

Volume 40 Issue 1

Mar. 2022

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YAO Chuang, LIU Jianxin, ZHAO Ziling, LIN Guoying, LIU Hui. EFFECTS OF CARBON RESOURCE ADDITON STRATEGIES ON PHOSPHORUS AND NITROGEN REMOVAL AND MICROBIAL COMMUNITY STRUCTURE IN AN A2/O SYSTEM[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(1): 21-26,223. doi: 10.13205/j.hjgc.202201004

Citation:

YAO Chuang, LIU Jianxin, ZHAO Ziling, LIN Guoying, LIU Hui. EFFECTS OF CARBON RESOURCE ADDITON STRATEGIES ON PHOSPHORUS AND NITROGEN REMOVAL AND MICROBIAL COMMUNITY STRUCTURE IN AN A²/O SYSTEM[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(1): 21-26,223. doi: 10.13205/j.hjgc.202201004

Citation:

YAO Chuang, LIU Jianxin, ZHAO Ziling, LIN Guoying, LIU Hui. EFFECTS OF CARBON RESOURCE ADDITON STRATEGIES ON PHOSPHORUS AND NITROGEN REMOVAL AND MICROBIAL COMMUNITY STRUCTURE IN AN A²/O SYSTEM[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(1): 21-26,223. doi: 10.13205/j.hjgc.202201004

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EFFECTS OF CARBON RESOURCE ADDITON STRATEGIES ON PHOSPHORUS AND NITROGEN REMOVAL AND MICROBIAL COMMUNITY STRUCTURE IN AN A²/O SYSTEM

doi: 10.13205/j.hjgc.202201004

1. Guangdong Wastewater Treatment Engineering Technology Center of Standard & Efficiency Increasing and Resource Recycling,Guangdong Research Institute of Engineering Technology Co., Ltd, Guangzhou 510440, China;
2. Guangdong Provincial Academy of Building Research Group Co., Ltd, Guangzhou 510500, China;
3. Department of Environmental Science and Engineering, Zhongkai University of Agricultural and Engineering, Guangzhou 510225, China

Received Date: 2020-12-04
Available Online: 2022-03-30
Publish Date: 2022-03-30

Abstract

Abstract

To reveal the effect of carbon resource addition strategies on nitrogen and phosphorus removal in low carbon wastewater, an A²/O system was employed to treat the simulated low C/N wastewater(C/N 2.0~4.0) with carbon resource addition respectively at the sludge return tank and the water inlet. The nitrogen and phosphorus removal efficiency and microbial community structure were comparatively investigated under different conditions.Resultsshowed that higher removal efficiency of nitrogen and phosphorus was easily achieved by adding the same amount of carbon source to the sludge return tank(stage Ⅲ), compared with the traditional way of adding carbon source at the water inlet(stage Ⅳ). When the A²/O system was stably operated at stage Ⅲ, the removal rate of TN and TP was 54.5% and 63.9% respectively, higher than that at stage Ⅳ(the removal rate of TN and TP was 44.9% and 21.7%, respectively). High-throughout sequencing results indicated that the microbial abundance and diversity changed with carbon resource addition strategies. Meanwhile, the way of adding carbon source to the sludge return tank was conducive to the enrichment of dominant flora. Rhodoplanes(2.3%), Dechloromonas(1.6%) and Hyphomicrobium(1.4%) was the dominant genus at stage Ⅲ, and the proportions of the above three genus were also higher than that in stage Ⅳ when the carbon resource was added to the inlet.
- A²/O process,
- adding way,
- nutrient removal,
- microbial community structure

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References(23)

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