Effect and Circulating of IC Reactor Treating Straw-Washing Wastewater

Ke Zeng; Shi Hao Liu; Hong Chao Zhang; Yan Ping Cui

doi:10.4028/www.scientific.net/AMR.881-883.540

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 881-883Effect and Circulating of IC Reactor Treating...

Effect and Circulating of IC Reactor Treating Straw-Washing Wastewater

Abstract:

An IC reactor volume 6m³ was used to treat the straw-washing water produced in a pulping and papermaking mill in experiment. When loading rate was 3.34~6.28kgCOD/(m³·d) COD average removal rate was 28.14%, that was lower than COD average removal rate of sludge waking up stage (47.30%) and acclimation stage (51.14%), and also lower than COD removal rate (50~80%) of IC running well. Gas production rate of the reactor was 1.53~32.17L/h, and effluent VFA was 746.0~1211.0mg/L. So hydrolysis-acidification process was more appropriate than anaerobic process when treating the straw-washing water. Due to low concentration of the wastewater and less gas production, the inner circulatory system of the reactor produced discontinuous ascending flow. When gas production rate of the reactor was 12.00~54.55L/h, flow rate of lifting pipe was 1.20~12.86L/h, and the ratio of flow rate and gas production rate was 0.08~0.36. Down pipe produced intermittent backflow, backflow rate reached 518.4~725.1L/h.

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Periodical:

Advanced Materials Research (Volumes 881-883)

Pages:

540-545

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.881-883.540

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Online since:

January 2014

Authors:

Ke Zeng*, Shi Hao Liu, Hong Chao Zhang, Yan Ping Cui

Keywords:

Backflow Rate, IC Reactor, Lifting Flow Rate, Papermaking Wastewater, Straw-Washing Wastewater

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* - Corresponding Author

References

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