EFFECT OF INFLUENT CONDITIONS ON PERFORMANCE AND MICROORGANISMS IN THE SIDE-STREAM ACTIVATED SLUDGE HYDROLYSIS PROCESS

LIU Yu-long; ZHANG Zhi-feng; ZHANG Li; ZHANG Zhe; QIN Lu; CHAI Guo-dong; ZHENG Xing; WANG Dong-qi

doi:10.13205/j.hjgc.202205021

Volume 40 Issue 5

Jul. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(5): 146-151,158

LIU Yu-long, ZHANG Zhi-feng, ZHANG Li, ZHANG Zhe, QIN Lu, CHAI Guo-dong, ZHENG Xing, WANG Dong-qi. EFFECT OF INFLUENT CONDITIONS ON PERFORMANCE AND MICROORGANISMS IN THE SIDE-STREAM ACTIVATED SLUDGE HYDROLYSIS PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 146-151,158. doi: 10.13205/j.hjgc.202205021

Citation:

LIU Yu-long, ZHANG Zhi-feng, ZHANG Li, ZHANG Zhe, QIN Lu, CHAI Guo-dong, ZHENG Xing, WANG Dong-qi. EFFECT OF INFLUENT CONDITIONS ON PERFORMANCE AND MICROORGANISMS IN THE SIDE-STREAM ACTIVATED SLUDGE HYDROLYSIS PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 146-151,158. doi: 10.13205/j.hjgc.202205021

Citation:

LIU Yu-long, ZHANG Zhi-feng, ZHANG Li, ZHANG Zhe, QIN Lu, CHAI Guo-dong, ZHENG Xing, WANG Dong-qi. EFFECT OF INFLUENT CONDITIONS ON PERFORMANCE AND MICROORGANISMS IN THE SIDE-STREAM ACTIVATED SLUDGE HYDROLYSIS PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 146-151,158. doi: 10.13205/j.hjgc.202205021

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EFFECT OF INFLUENT CONDITIONS ON PERFORMANCE AND MICROORGANISMS IN THE SIDE-STREAM ACTIVATED SLUDGE HYDROLYSIS PROCESS

doi: 10.13205/j.hjgc.202205021

1. Zhongsheng Environmental Technology Development Co., Ltd, Xi'an 710054, China;
2. Department of Municipal Engineering, Xi'an University of Technology, Xi'an 710048, China;
3. Shaanxi Key Laboratory of Water Resources and Environment, Xi'an 710048, China

Received Date: 2021-03-29
Available Online: 2022-07-02

Abstract

Abstract

The treatment performance of the traditional biological phosphorus removal process is vulnerable to the change of influent conditions. To solve this problem, a side-stream activated sludge hydrolysis(SSH) reactor was constructed. The changes in pollutant removal performance and microbial community structure in the SSH reactor and conventional anaerobic/anoxic/aerobic(A²/O) reactor were compared under different influent conditions. The results showed that little change in chemical oxygen demand(COD) removal performance was observed in A²/O and SSH reactors, with COD removal efficiencies of 90%. The increase in influent load and flow rate improved the nitrogen and phosphorus removal performance. The total nitrogen removal efficiency in A²/O and SSH reactors increased from 58% and 72% in Phase Ⅰ, to 67% and 83% in Phase Ⅲ, respectively, whereas the total phosphorus removal efficiency increased from 60% to 80% above. Compared to the A²/O reactor, the change in influent conditions had lower impact on the nitrogen removal performance in the SSH reactor. Under the same influent condition, the nitrogen removal performance in the SSH reactor was more effective, with an average total nitrogen removal efficiency 23% higher than that in the A²/O reactor. The high-throughput sequencing results showed that the SSH reactor had higher microbial community diversity and relative abundances of functional microorganisms for nutrient removal such as Dechloromonas, Accumulibacter, which contributed to its effective and stable reactor performance. The results provided references for the design and practical application of SSH process.

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References

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