【摘要】 采用超高石灰铝法脱除废水中的氯离子（Cl^-）,考察了氧化钙和偏铝酸钠配比,亚硫酸根(SO₃^2-),硫酸根(SO₄^2-)对废水中氯离子去除率的影响。结果表明:在n（Ca）∶n（Al）∶n（Cl）为15.0∶4.5∶1.0的最佳条件下,Cl^-去除率可达86.35%。当废水中SO₃^2-和SO₄^2-分别存在或二者同时存在时,Cl^-去除率显著降低,应先脱除SO₃^2-和SO₄^2-后再脱除Cl^-。更多还原

【Abstract】 The influence of mole ratio of calcium oxide to sodium metaaluminate,sulfite ion( SO₃^2-) and sulfate ion( SO₄^2-) on removing chloride ion from wastewater was investigated by ultra high lime aluminum method. The results showed that under the optimum condition of n（ Ca） ∶ n（ Al） ∶ n（ Cl） 15. 0∶ 4. 5∶1. 0,chloride ion removal rate reached 86. 35%.When SO₃^2- and SO₄^2-of wastewater existed simultaneously and separately,chloride ion removal rate decreased obviously and SO₃^2- and SO₄^2- should be removed firstly and then chloride ion ought to be removed.更多还原