【摘要】：采用富集和馴化后的硫酸鹽還原菌處理吡啶硫酮鋅生產(chǎn)廢水,并考察不同實(shí)驗(yàn)參數(shù)對硫酸鹽降解和鋅沉淀的影響。單因素實(shí)驗(yàn)結(jié)果表明:當(dāng)吡啶硫酮鋅濃度為3.0~5.0 mg/L時,鋅離子和硫酸根離子的去除率呈明顯下降趨勢。當(dāng)溫度為30~35℃、pH為7~8、接種量為10%~25%時,鋅離子和硫酸根離子都能得到有效去除。零價鐵不僅能提高硫酸鹽還原菌對硫酸根離子和鋅離子的去除效果,還能加強(qiáng)硫酸鹽還原菌對鋅離子和吡啶硫酮鋅毒性的抗性。此外,采用Box-Behnken法研究主要實(shí)驗(yàn)參數(shù)對硫酸鹽去除率的影響。得到最佳實(shí)驗(yàn)條件如下:pH7.45、溫度33.61℃、吡啶硫酮鋅濃度0.62 mg/L。在最佳實(shí)驗(yàn)條件下硫酸根離子的去除率能達(dá)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，

本文編號：2211538