复合高级氧化法处理聚丙烯酰胺

为处理聚驱采油废水中的聚合物,研制出可工业放大的新型多光源化学反应器,并采用O3/H2O2/UV联用技术,于此反应器内对聚丙烯酰胺(PAM)溶液进行降解研究,考察影响降解PAM速率的主要因素.结果表明,该反应体系对PAM有较好的去除率,且在任何特定反应条件下,PAM的降解速率均与PAM的质量浓度成正比.O3与H2O2均有最优投加量,当O3超过最优投加量时,表观速率常数不会有所增加,而H2O2一旦超过最佳投加量,表观速率常数会迅速下降,当H2O2投加量大于27.8 mg/min时,O3/H2O2/UV法降解PAM的表观速率常数甚至低于O3/UV法.并且表观速率常数随光辐射强度的增大而增大,随pH的增大而减小.

Degradation of polyacrylamide by combined advanced oxidation process

In order to treat polymers in oil recovery wastewater from poly flooding,a batch reactor with numerous lamp-houses was developed,and the degradation of polyacrylamide(PAM) by O3/H2O2/UV processes was studied in this reactor.Besides,the effects of operating parameters were investigated.It was found that PAM was degraded efficiently by O3/H2O2/UV processes,and the degradation rate of PAM was in direct proportion to the PAM concentration.In addition,both O3and H2O2 had optimum dosages,and the degradation rate didn’t increase when O3 exceeded its optimum dosage,but the degradation rate decreased rapidly when H2O2 exceeded its optimum dosage.When the H2O2 dosage exceeded 27.8 mg/min,the degradation rate of PAM by O3/H2O2/UV was less than that by O3/UV.Moreover,the apparent reaction rate increased with the increasing UV dosage,and decreased along with the increasing pH.