三株优势菌对多环芳烃的降解性能研究

多环芳烃具有毒性、生物蓄积性和半挥发性，并能在环境中持久存在。生物修复处理具有费用低、效果好、污染物残留量低、不产生二次污染、能够保持或改善植物生长的土壤结构等优点。实验分别在对单一菌株、两两混合菌株及三株菌混合等三种情形下，对蒽、菲、芘的降解作用进行了研究。研究结果表明：单一菌株对蒽、菲、芘有一定的降解能力，菌株混合时，对蒽、菲的降解率有所提高；三株菌种混合时，黄杆菌对放线菌、红球菌的生长过程有抑制作用；蒽、菲、芘的降解过程会不断交替进行着产酸和脱羧过程，使降解液pH值出现波动；同时在降解过程中，菌体能产生表面活性物质，这有利于蒽、菲、芘的生物降解转化。

Study on Three Predominant Strains Used in the Degradation of Polycyclic Aromatic Hydrocarbons

Polycyclic Aromatic Hydrocarbons(PAHs) have high toxicity,bio-accumulation,semi-volatility and persistently exists in the environment.Bioremediation has the superiority over the other methods,with low cost,good effects,little residuals and no second pollution;it can also keep or improve the soil environment in which plants are growing.Using actinomycetes,rhodococcus and flavobacterium bacteria of their combined process to study the degradation of Anthracene,Phenaphthene and Pyrene.The studies are arranged a...