驱油破乳剂在焦化废水处理中的应用

在焦化废水处理生产中，利用季铵盐、阳离子聚丙烯酰胺、聚硅氧烷乳液复配而成的驱油破乳剂，能有效降低废水中的油、NH₃-N、CODcr、悬浮物及浊度，不同组成配比和投加量，去除率有较大差异。实验研究结果表明:驱油破乳剂按600 mL/m³（废水）投加，油去除率可达到75.45%、CODcr去除率可达到56.24%，NH₃-N去除率可达到54.55%，悬浮物去除率可达到80.86%，浊度可降至51.23 mg/L，在生产现场使用得到了验证。驱油破乳剂投加浓度达到800 mL/m³（废水）时，去除时间大大缩短。

Application of oil displacement demulsifier in coking wastewater treatment

In the treatment and production of coking wastewater，the oil-displacing demulsifier was compounded by quaternary ammonium salt，cationic polyacrylamide，and polysiloxane emulsion could effectively reduce the oil，NH₃-N，CODcr，and suspended solids in the wastewater.And turbidity，different composition ratio and dosage，the removal rate was quite different.The experimental research results showed that when the oil displacement demulsifier was added at 600 mL/m³ (wastewater)，the oil removal rate could reach 75.45%，the CODcr removal rate could reach 56.24%，and the NH₃-N removal rate could be reaching 54.55%，the removal rate of suspended solids could reach 80.86%，and the turbidity could be reduced to 51.23 mg/L，which had been verified by the production site.When the concentration of the oil displacement demulsifier reached 800 mL/m³ (wastewater)，the removal time was greatly shortened.