化学氧化法处理资源回收后的J-酸和吐氏酸染料中间体废液

萘系磺酸染料中间体Ｊ－酸和吐氏酸废母液经有用资源的回收后，尚须进行最终出水的达标处理．通过吐氏酸和Ｊ－酸废母液萃余液的后处理试验，确定了盐回收－混凝沉淀－化学氧化的达标处理工艺方案，并确定了相应的工艺参数．其中化学氧化采用Ｆｅｎｔｏｎ试剂（以双氧水作氧化剂，绿矾为催化剂），在经济合理的投量范围内经２—４ｈ反应，萃余液ＣＯＤＣｒ去除率达８０％以上，最终出水ＣＯＤｃｒ在２００ｍｇ／Ｌ以下，满足有关工业废水排放标准．

Chemical Oxidation of J-Acid and Tobias Acid Dye Intermediate Waste Liquor

After recovering the useful substances from the waste liquor of two kinds of naphthalene series sulfonic acid dye intermediates, J-acid and Tobias acid,it is necessary to have a final treatment of the effluent,remained liquor, according to the National Standard of Industry Wastewater Discharge. The saltreco very-co-agulation and sediment ation-chemical oxidation process was carried out for treating the remained liquor(COD_Cr 1000mg/L, salt concentration 150-300g/L)in the paper. Fenton reagent(combination of H₂O₂ and Fe²⁺)was used for the chemical oxidation and the optimum parameters of the process had been obtained. The dosages of hydrogen peroxide(containing 30% of H₂O₂)and FeSO₄·7H₂O are 4L and 1.35kg per m³ of theremained liquor,respectively. The COD_Cr removal efficiency is more than 80% and COD_Cr of the final effluent is decreased to less than 200mg/L which meet the requirement of the National Standard.