生物法处理吡啶硫酮锌生产废水中高浓度锌离子和硫酸根离子（英文）
发布时间：2018-08-29 14:49
【摘要】：采用富集和驯化后的硫酸盐还原菌处理吡啶硫酮锌生产废水,并考察不同实验参数对硫酸盐降解和锌沉淀的影响。单因素实验结果表明:当吡啶硫酮锌浓度为3.0~5.0 mg/L时,锌离子和硫酸根离子的去除率呈明显下降趋势。当温度为30~35℃、pH为7~8、接种量为10%~25%时,锌离子和硫酸根离子都能得到有效去除。零价铁不仅能提高硫酸盐还原菌对硫酸根离子和锌离子的去除效果,还能加强硫酸盐还原菌对锌离子和吡啶硫酮锌毒性的抗性。此外,采用Box-Behnken法研究主要实验参数对硫酸盐去除率的影响。得到最佳实验条件如下:pH7.45、温度33.61℃、吡啶硫酮锌浓度0.62 mg/L。在最佳实验条件下硫酸根离子的去除率能达到最大值91.62%。
[Abstract]:Pyridine-zinc sulphide production wastewater was treated by sulphate reducing bacteria after enrichment and acclimation, and the effects of different experimental parameters on sulfate degradation and zinc precipitation were investigated. The results of single factor experiment showed that the removal rate of zinc ion and sulfate ion decreased obviously when the concentration of zinc pyridine thione was 3.0 ~ 5.0 mg/L. When the temperature is 30 ~ 35 鈩，
本文编号：2211538
[Abstract]:Pyridine-zinc sulphide production wastewater was treated by sulphate reducing bacteria after enrichment and acclimation, and the effects of different experimental parameters on sulfate degradation and zinc precipitation were investigated. The results of single factor experiment showed that the removal rate of zinc ion and sulfate ion decreased obviously when the concentration of zinc pyridine thione was 3.0 ~ 5.0 mg/L. When the temperature is 30 ~ 35 鈩，
本文编号：2211538
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