Study on Radioactive Wastewater Treatment by Precipitation and Membrane Separation

Xin Luo; Jing Wang

doi:10.4028/www.scientific.net/AMM.490-491.972

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 490-491Study on Radioactive Wastewater Treatment by...

Study on Radioactive Wastewater Treatment by Precipitation and Membrane Separation

Abstract:

The chemical precipitation method was combined with the membrane separation to treat the simulated radioactive wastewater containing strontium in the paper. The calcium carbonate powder was used to prepare the seed and the sodium carbonate was selected as the precipitant. Sr²⁺ and CO₃^2- constantly crystallized on the seed surface in the granulation reactor. FeCl₃ was dosed in the subsequent membrane separator. The average concentrations of strontium in the raw water and in the effluent were 5.046 mg/L and 0.028 mg/L, respectively. The DF increased gradually with the operation time, with an average value of 279. After the test, the formed precipitate was easy to separate from the liquid and was directly discharge after sedimentation for 24 h. The CF was 3170. The membrane specific flux decreased rapidly in the early stage and then declined slowly with the operation time.

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Periodical:

Applied Mechanics and Materials (Volumes 490-491)

Pages:

972-975

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.490-491.972

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Online since:

January 2014

Authors:

Xin Luo*, Jing Wang

Keywords:

Calcium Carbonate, Chemical Precipitation, Membrane Separation, Sodium Carbonate, Strontium

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