Treatment of Simulated Radioactive Cobalt Containing Wastewater by Ultra-low Pressure Reverse Osmosis Process

Zhang Wenxiu; Zhang Guanghui

doi:10.13832/j.jnpe.2023.01.0187

Volume 44 Issue 1

Feb. 2023

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Zhang Wenxiu, Zhang Guanghui. Treatment of Simulated Radioactive Cobalt Containing Wastewater by Ultra-low Pressure Reverse Osmosis Process[J]. Nuclear Power Engineering, 2023, 44(1): 187-191. doi: 10.13832/j.jnpe.2023.01.0187

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Zhang Wenxiu, Zhang Guanghui. Treatment of Simulated Radioactive Cobalt Containing Wastewater by Ultra-low Pressure Reverse Osmosis Process[J]. Nuclear Power Engineering, 2023, 44(1): 187-191. doi: 10.13832/j.jnpe.2023.01.0187

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Treatment of Simulated Radioactive Cobalt Containing Wastewater by Ultra-low Pressure Reverse Osmosis Process

doi: 10.13832/j.jnpe.2023.01.0187

Zhang Wenxiu,
Zhang Guanghui^,

School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China

Received Date: 2022-01-22
Rev Recd Date: 2022-10-31
Publish Date: 2023-02-15

Abstract

Abstract

The radioactive wastewater produced by the operation, maintenance and decommissioning of nuclear power plants is seriously harmful to the social environment and life and health safety. A pilot plant (144 L/h) is used to study the removal effect of cobalt (Co) from simulated radioactive wastewater by ultra-low pressure reverse osmosis (ULPRO) process. The effects of operating pressure, recovery rate, influent concentration, coexisting ions and natural organic pollutants on it are determined. The results show that the removal rate of Co is positively correlated with the operating pressure and negatively correlated with the recovery rate, the removal rate of Co is constant at 99.5% with the increase of influent concentration, and 10 mg/L is the critical concentration for its change; As for coexisting ions, only Ca²⁺^{will inhibit the removal of Co, and the promotion effect of other ions is in the order of Na⁺>Mg²⁺, SO₄²⁻>Cl⁻>NO₃⁻; Organic pollution reduces the membrane flux by 9.4%, but the removal rate of Co increases to 99.97%. The experimental results show that the ULPRO process has stable operation effect and high removal rate for the treatment of simulated radioactive wastewater containing Co, which can provide guidance for industrial application.}
- Low-level radioactive wastewater,
- Ultra-low pressure reverse osmosis (ULPRO),
- Membrane separation,
- Cobalt

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References(21)

References

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