ENHANCED PHOSPHORUS RECOVERY FROM WASTEWATER BY MEMBRANE FILTRATION COUPLED WITH ELECTROCHEMICAL TECHNOLOGY

XU Jun; WEI Haijuan; WANG Zhiwei

doi:10.13205/j.hjgc.202203002

Volume 40 Issue 3

Mar. 2022

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XU Jun, WEI Haijuan, WANG Zhiwei. ENHANCED PHOSPHORUS RECOVERY FROM WASTEWATER BY MEMBRANE FILTRATION COUPLED WITH ELECTROCHEMICAL TECHNOLOGY[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 7-12. doi: 10.13205/j.hjgc.202203002

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XU Jun, WEI Haijuan, WANG Zhiwei. ENHANCED PHOSPHORUS RECOVERY FROM WASTEWATER BY MEMBRANE FILTRATION COUPLED WITH ELECTROCHEMICAL TECHNOLOGY[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 7-12. doi: 10.13205/j.hjgc.202203002

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ENHANCED PHOSPHORUS RECOVERY FROM WASTEWATER BY MEMBRANE FILTRATION COUPLED WITH ELECTROCHEMICAL TECHNOLOGY

doi: 10.13205/j.hjgc.202203002

1. School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Bailonggang WWTP, Shanghai Chengtou Wastewater Treatment Co., Ltd, Shanghai 201201, China

Received Date: 2021-06-21
Available Online: 2022-07-07

Abstract

Abstract

A novel phosphorus recovery process combining membrane filtration and electrochemical struvite precipitation was proposed to treat phosphorus-containing wastewater. The effects of membrane flux, current density, initial phosphorus concentration and polarity reversal time on phosphorus removal and recovery were investigated. The results showed that the average phosphorus removal efficiency was 92.0% at an initial phosphorus concentration of 5 mmol/L, a membrane flux of 22.1 L/(m²·h) and a current density of 20 A/m², and struvite was the dominant composition of the recovered products. In the flow-through operation mode, different initial phosphorus concentrations had no significant effect on phosphorus removal. When the system was operated in continuous flow mode, the phosphones removal rate was maintained at 90% by 6 min polarity reversal every 4 h operation.
- phosphorus recovery,
- struvite,
- electrochemical technology,
- membrane filtration,
- wastewater treatment

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References(21)

References

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