Zhang Hong-guo, Luo Ding-gui, Chen Yong-heng, Chao Heng-heng, Z. Fei
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Notice of RetractionStudy on Start-Up of Sulfate-Reducing Bioreactor Using Acid Wastewater Containing Thallium
Human health has been great threatened by acid wastewater containing thallium. The feasibility of start-up Sulfate-Reducing Bioreactor with acid wastewater containing thallium had been studied in the experiment. Sulfate-Reducing Bioreactor being started up successfully within 136 days with the method of high rate cultivation had been demonstrated. The results showed that the average removal efficiencies of sulfate achieved 25.21%, 61.08% and 93.39% during the lag phase, the increase phase and the steady phase of the Sulfate-Reducing Bioreactor, respectively. A preferable removal efficiency of thallium had been achieved, corresponding to the average thallium removal efficiency of 97.97% during the experimental period. However, COD in the acid wastewater mixture need further treatment due to removal efficiency of COD was not well, corresponding to the average removal efficiency of 26.12% in the steady phase of Sulfate-Reducing Bioreactor. The ratio of removal COD to sulfate reduced gradually and tented to be steady with the advance of start-up process of the bioreactor, which had been demonstrated that positive relevance was existed between the ratio of removal COD to sulfate and sulfate removal efficiency of the bioreactor.
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