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| DOI：10.13522/j.cnki.ggps. 2024031 |
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| AAO-MBBR process in rural domestic sewage applied effects research |
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JIA Qian, HU Yawei, SONG Jingru, JIN Xiaohui
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1. Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China; 2. Rural Water Environmental Engineering Technology Research Center of Henan Province, Zhengzhou 450003, China; 3. Key Laboratory of Ecological Environment Protection and Restoration in the Yellow River Basin of Henan Province, Zhengzhou 450003, China
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| Abstract: |
| 【Objective】The purpose of this paper is to study the optimal operation condition of AAO-MBBR mode of the new rural sewage treatment process and its treatment effect on pollutants.【Method】By comparing the pollutant removal rate under different residence time, different internal circulation ratio and different aerobic tank dissolved oxygen concentration, the optimal operation parameters of the equipment were screened out, and the equipment was set to operate under the optimal operating condition. The treatment effect on various pollutants was analyzed.【Result】The results showed that the improved AAO-MBBR process had the best removal effect when the hydraulic retention time was 8 h, the internal circulation ratio was 300% and the concentration of dissolved oxygen in aerobic pool was 2.5 mg/L. Under optimal operating conditions, the removal rates of SS, COD, BOD, NH3-N and TP of the equipment were 80%, 85%, 91%, 84.5% and 46%, respectively. And the treatment effect is significantly higher than that of other sewage treatment equipment.【Conclusion】The improved AAO-MBBR process has a good effect on pollutant removal in integrated wastewater treatment equipment. |
| Key words: integrated sewage treatment equipment; new process of AAO-MBBR; COD; ammonia nitrogen; removal rate |
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