化工进展2016，Vol.35Issue(11)：3447-3453,7.DOI:10.16085/j.issn.1000-6613.2016.11.009
板式换热器混合微生物污垢特性的实验研究
Experimental study on composite microbial fouling characteristics of the plate heat exchanger
摘要
Abstract
In order to study the characteristics of composite microbial fouling and the method of restraining fouling in the future,we chose iron bacteria(IB)and slime-forming bacteria(SFB)as the research objects which are the most common in microbial fouling. An experimental study was carried out on the plate heat exchanger for the relationship of the two bacteria in the composite microbial fouling formation and the fouling characteristics under different conditions. The results show that the microbial fouling has obvious induction period. The asymptotic value of fouling resistance of the iron bacteria is 2×10–4m2·K/W,and the asymptotic value of fouling resistance of the slime-forming bacteria is 1.2×10–4 m2·K/W. The iron bacteria have strong ability of fouling formation than the slime-forming bacteria. The fouling resistance of mixed bacteria with the proportion 1∶1 is between the two above. No matter what kind of bacteria occupy the main volume,synergistic effects between the two kinds of bacteria prompt the ability of the fouling formation. The asymptotic values of fouling resistance of the mixed bacteria in 30℃ is lower than it in 35℃,and the time get to stabilization is twice that of 35℃. The velocity has obvious effect on the composite microbial fouling characteristics. The asymptotic values of fouling resistance of the mixed bacteria in 0.1m/s is twice that of 0.15m/s,and the time get to stabilization is 2.7 times that of 0.15m/s.关键词
铁细菌/黏液形成菌/混合物/板式换热器/结垢/生物膜Key words
iron bacteria/slime-forming bacteria/mixtures/plate heat exchanger/fouling/biofilm分类
能源科技引用本文复制引用
徐志明,王景涛,贾玉婷,韩志敏..板式换热器混合微生物污垢特性的实验研究[J].化工进展,2016,35(11):3447-3453,7.基金项目
国家自然科学基金项目（51476025）。 （）
