生物膜的形成对史深100 注水水质变化的影响

Effect of the Formation of Biofilm on the Water Quality during Injection in Shishen 100 Fault Block

李常友

LI Changyou

生物膜（Biofilm）是在相对封闭水环境体系中形成的一层微生物膜。本文研究了在史深100 污水生物膜生成过程中水质细菌量、化学需氧量（CODcr）、硫化物含量、悬浮物含量等的变化，进而探讨了生物膜的形成对水质的变化影响规律。研究结果表明，随培养时间的延长，史深100 污水细菌菌量、CODcr 值、硫化物含量、悬浮物含量均有先增大后减小的变化趋势，而水质中Fe2+含量则近似呈逐渐增大趋势，表明了史深100 污水腐蚀、结垢主要是由于史深100 污水中生物繁殖发育，生物膜的形成导致史深100 污水在注水过程中水质不稳定，腐蚀、结垢严重。图1 表4 参14

Biofilm is a layer of microbial film，formed in a relatively closed water environment. In the paper ，the amount of bacteria，CODcr，sulphide content，Fe2+ contentand the suspended sediments content in Shishen 100 waste water during the formation of the biofilm were investigated，further，the effect of the formation of the biofilm on the water quality was probed. The results showed that with the extending of incubation time，the amount of bacteria in sewage，CODcr，sulphide content and the concentration of suspended sediments in water，ascended in first and descended at last，while the Fe2+ content in the water increased gradually， which indicated that the bacterial reproduction was the main reason of the corrosion and scale. The formation of biofilm leaded to the instability of the field waste water during injection，and also leaded to serious corrosion and scale.