TREATMENT OF DISPERSED DOMESTIC SEWAGE BY JOHKASOU WITH BASALT FIBER CARRIER MEDIA

CAI Ruoqi; NI Huicheng; XI Haipeng; LI Junbo; WU Zhiren

doi:DOI:10.13205/j.hjgc.202207021

Volume 40 Issue 7

Sep. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(7): 146-152

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CAI Ruoqi, NI Huicheng, XI Haipeng, LI Junbo, WU Zhiren. TREATMENT OF DISPERSED DOMESTIC SEWAGE BY JOHKASOU WITH BASALT FIBER CARRIER MEDIA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 146-152. doi: DOI:10.13205/j.hjgc.202207021

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TREATMENT OF DISPERSED DOMESTIC SEWAGE BY JOHKASOU WITH BASALT FIBER CARRIER MEDIA

doi: DOI:10.13205/j.hjgc.202207021

1. School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China;
2. ATK Holding Group Co., Ltd, Yixing 214214, China

Received Date: 2021-01-12
Available Online: 2022-09-02

Abstract

Abstract

To solve the problem of wide distribution,great difference and variation in treating rural domestic sewage,a novel basalt fiber (BF) was explored as a biological carrier to build an integrated Johkasou.The effect was evaluated by multi-factor orthogonal test and actual wastewater treatment.The microbial flora of aerobic and anoxic reaction tanks was analyzed to explain the performance of Johkasou.The results showed that when DO in the aerobic tank was 3 mg/L,HRT was 8 h,pH was 7~7.5,the Johkasou exhibited the best removal effect on COD,NH₄⁺-N,TN and other pollutants,and when DO of the aerobic tank was more than 2 mg/L,the Johkasou possessed a certain impact resistance to COD load and C/N fluctuation.Using actual domestic sewage to evaluate the operation effect of the Johkasou,the removal rates of COD,NH₄⁺-N,and TN were as high as 89.60%,87.03%,and 82.22%,respectively.The denitrification performance was better than that of the traditional granular packing Johkasou. Ferruginibacter,Candidatus_Saccharimonas,and Terrimonas were the dominant bacteria in Johkasou,which could decompose macromolecular organic matters in sewage.Terrimonas,Acidovorax,and Thermomonas could play different roles in promoting nitrogen cycle.
- basalt fiber,
- carrier media,
- Johkasou,
- bio-nest,
- dispersed domestic sewage

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References

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