论文部分内容阅读
对慢滤系统中采用沸石、石英砂及活性炭3种过滤介质抑制黄瓜枯萎病原菌的效果进行吸附除菌研究。结果表明:3种介质对黄瓜枯萎病菌均有一定的抑制作用;在一定时间内,菌团被吸附的总量随时间的增加而达到吸附平衡的最大值,然后由于解吸作用吸附量又逐渐变小;同种介质不同粒径相比,均为大粒径的吸附效果好:粒径0.8～1.6mm的沸石抑菌率为80.3%,石英砂为87.9%,活性炭最高,可达93.6%;达到吸附平衡所需时间,大粒径活性炭最短,为12h,大粒径沸石为18h,大粒径石英砂为30h。对于依靠吸附来抑制黄瓜枯萎病菌的沸石、石英砂及活性炭3种介质,大粒径活性炭为最佳,吸附量最大,用时最短。
The slow filtration system using zeolite, quartz sand and activated carbon filter media inhibitory effect of cucumber wilt pathogens adsorption adsorption study. The results showed that all the three media had some inhibitory effects on Fusarium oxysporum f.sp. cucumbers. The total amount of adsorption was up to the maximum value of adsorption equilibrium with the increase of time, and then the amount of sorption was gradually changed due to desorption The average particle size of the same medium compared to the large particle size adsorption effect: zeolite particle size of 0.8 ~ 1.6mm inhibition rate of 80.3%, quartz sand 87.9%, the highest activated carbon, up to 93.6%; The time required to achieve equilibrium adsorption, the shortest large-size activated carbon, 12h, large-diameter zeolite 18h, large-size quartz sand 30h. For the zeolite, quartz sand and activated carbon which rely on adsorption to inhibit Fusarium oxysporum f. Cucumbers, the large particle size activated carbon is the best, the adsorption capacity is the largest and the time is the shortest.