本工作研究了一种注重于减少二次有机污染的废水高效环保脱酚工艺，采用了一种创新的方法采集含酚焦化废水的样品，通过检测特定参数确定废水样品的化学成分，避免实验误差且增强了水处理效果. 蒸氨废水是一种理想的焦化废水样品，脱酚过程中不会产生酸焦油油膜和硫酸铵沉淀. 相对于蒸氨废水，残余氨水不仅会导致严重的水污染还会消耗更多的酸，导致成本增高. 从环保角度研究萃取剂，除了关注其脱酚效率还需要研究其他影响参数如总氰量、S?含量、氨氮量、Cl?含量、SO42?含量、挥发酚含量、总含盐、污水含油量、总硬度、CODCr、电导率和pH值等. 考察了有机微粒的扩散特征和导致脱酚前后参数变化的原因. 以温度23℃、浓度为3wt%的氢氧化钠溶液反复洗涤用过的BQ络合萃取剂5次可得再生萃取剂，用其处理过后废水挥发酚含量为265.45 mg/L. 这款优良的萃取剂的CODCr，污水含油量，pH，脱酚效率依次分别为3638.34, 188.86, 6.18和83.76%，造成的二次有机污染较少.
This work hereby reports an eco-friendly efficient extractive wastewater dephenolization process with particular emphasis on cutting secondary organic pollutants. A collection of coking waste water samples containing high phenol concentration was treated by an innovative phenol extraction method. To avoid experimental errors and facilitate water treatment, certain parameters were selected for determining the chemical composition of waste water samples. The distilled ammonia waste water was found to be ideal due to lack of oil film or ammonium sulfate tar precipitation during the dephenolization. In contrast to distilled ammonia waste water, the residual ammoniated water not only was the cause of extreme water pollution, it also consumed large quantity of acid resulting in high cost, thus creating economic issues for this process. For environmental aspects, while determining the phenol removal efficiency other influencing factors, such as determination of cyanides, sulfur ions, ammonia nitrogen content, chloride ions, sulfate ions, total volatile phenols, total salts, sewage oil content, along with total hardness, CODcr, electrical conduction and pH for comparative test and analysis of alkali-enhanced extractant were also determined. The diffusion behavior of organic molecules and reasons which determine changes in parameter before and after the phenol extraction were studied. Repeatedly washing the used BQ complex extractant 5 times with 3wt% sodium hydroxide solution at 23℃, the relatively optimal regenerated extractant can be prepared. The VHC value of the waste water processed by regenerated extractant was 265.45 mg/L. The regenerated BQ complex extractant was found to have a level of CODcr, sewage oil content, pH, dephenolization efficiency values as 3638.34, 188.86, 6.18, 83.76%, respectively, which meaned very little secondary organic pollutants.
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