O3氧化法和O3-H2O2氧化法去除水中聚丙烯酰胺

采用O3氧化法和O3-H2O2氧化法去除水中的聚丙烯酰胺（PAM），分别考察了反应时间、O3质量浓度、n（H2O2）∶n（O3）和溶液pH对PAM去除效果的影响。实验结果表明：O3氧化的最佳操作条件为反应时间30 min、O3质量浓度22.6 mg/L、溶液pH 8.5，O3-H2O2氧化的最佳操作条件为反应时间10 min、O3质量浓度22.6 mg/L、n（H2O2）∶n（O3）=0.1、溶液pH 8.5;在最佳操作条件下，O3氧化和O3-H2O2氧化均可有效降低PAM溶液的黏度和PAM质量浓度，但对COD的去除效果不佳，黏度可降至和蒸馏水相近，PAM的去除率可达80%以上，而COD的去除率分别约为15%和28%;O3-H2O2氧化后的PAM比O3氧化后的PAM更容易被微生物利用，两种氧化预处理方法均有利于后续的生化处理。

Removal of Polyacrylamide from Water by O3 Oxidation Process and O3-H2O2 Oxidation Process

Polyacrylamide(PAM) in water was removed by O3 oxidation process and O3-H2O2 oxidation process. The factors affecting the removal were studied. The optimum process conditions for O3 oxidation are as follows：reaction time 30 min，O3 mass concentration 22.6 mg/L and solution pH 8.5;The optimum process conditions for O3-H2O2 oxidation are as follows：reaction time 10 min，O3 mass concentration 22.6 mg/L，n(H2O2)∶n(O3)=0.1 and solution pH 8.5. Under the optimum process conditions，both of the two oxidation processes can effectively reduce the viscosity and PAM mass concentration of the PAM solution，but the removal of COD is poor. The viscosity of the treated solution is close to that of distilled water，the PAM removal rate is above 80% and the COD removal rate by the two processes are about 15% and 28% respectively. The degraded PAM after O3-H2O2 oxidation can be used by microorganism more easily than that after O3-H2O2 oxidation，and both of the two oxidation pretreatment processes are conducible to the further biochemical treatment.