CAJ | 학술논문

生物膜滴滤塔性能受多孔填料、生物膜和气液两相流体流动特性的共同影响,传质过程复杂,流体流动强烈地影响生物滴滤塔生物膜的形成和分布,同时生物膜在滴滤塔中的分布反过来影响填料层内气液两相流体流动.实验研究了生物滴滤塔挂膜前后填料层的孔隙率和不同气、液流量下压强降的变化,结果表明:滴滤塔内生物膜分布不均匀,填料层孔隙率随填料层高度增加而增加,填料层中下部,孔隙率低,生物量最大,填料层顶部,孔隙率与挂膜前相等,无生物膜生长;挂膜前气体流量对填料层压强降影响较液体流量影响大,挂膜后液体流量对填料层压强降影响较气体流量影响大;同时微生物挂膜成功后填料层气体压强降远大于挂膜前压强降.
생물막적려탑성능수다공전료、생물막화기액량상류체류동특성적공동영향,전질과정복잡,류체류동강렬지영향생물적려탑생물막적형성화분포,동시생물막재적려탑중적분포반과래영향전료층내기액량상류체류동.실험연구료생물적려탑괘막전후전료층적공극솔화불동기、액류량하압강강적변화,결과표명:적려탑내생물막분포불균균,전료층공극솔수전료층고도증가이증가,전료층중하부,공극솔저,생물량최대,전료층정부,공극솔여괘막전상등,무생물막생장;괘막전기체류량대전료층압강강영향교액체류량영향대,괘막후액체류량대전료층압강강영향교기체류량영향대;동시미생물괘막성공후전료층기체압강강원대우괘막전압강강.
The performance of biotrickling filter was affected by porous materials, biofilm and two phase liquid. In the packed-bed bioreactor liquid flow greatly affected the formation and distribution of biofilm, in return the distribution of biofilm had an obvious influence on the flow of two phase liquid. Characteristics of variation of porosity rate and air pressure drop versus different gas flux and liquid flux in packed-bed was respectively studied in the experiment. Results indicated that after successful growth of biofilm the porosity rate of the packed-bed increased with the height of packed-bed rising. Before formation of biofilm the effect of gas flux on the pressure drop of packed-bed was highly greater than that of liquid flux, while after biofilm formation the fluid flux had more influence upon the pressure drop of packed-bed than that of the gas flux and the pressure drop of packed-bed was greatly higher than that before biofilm formation.