生物活性抑制剂对光照自然水体生物膜体系产生H2O2及SDBS降解的影响

摘要

采用光照生物膜体系的方法,考察3种不同抑制作用的生物活性抑制剂对自然水体生物膜/水模拟体系中生物膜产生过氧化氢(H 2 O 2)以及典型有机污染物十二烷基苯磺酸钠(SDBS)降解的影响.结果表明:光合作用抑制剂和呼吸作用抑制剂对H 2 O 2生成和SDBS降解有显著的抑制作用,二者的抑制效果几乎相同;光呼吸作用抑制剂对H 2 O 2生成和SDBS降解影响较小.即生物的光合作用是H 2 O 2等活性氧成分产生和有机污染物降解的主要原因,其他生理作用的贡献相对较小.%By using the method of light irradiation in the biofilm system,we investigated three kinds of bioactivity inhibitors with different inhibitory effect on generation of H 2 O 2 and degradation of typical organic pollutants of sodium dodecyl benzene sulfonate (SDBS )in natural biofilm/water simulation systems. The results show that inhibitors of photosynthesis and respiration have a significant inhibitory effect on the generation of H 2 O 2 and degradation of SDBS,and the inhibitory effects of both of them are almost the same.The photo expiration inhibitor has little or no effect on the generation of H 2 O 2 and degradation of SDBS.Therefore,the biological photosynthesis is the main reason for the generation of H 2 O 2 and other reactive oxygen species,as well as the degradation of organic pollutants.Whereas,the contribution of other physiological role is relatively small.