Ginige Maneesha P, Garbin Scott, Wylie Jason, Krishna K C Bal
CSIRO Land and Water, Wembley, Western Australia, Australia.
Water Corporation of Western Australia, Leederville, Western Australia, Australia.
PLoS One. 2017 Jan 6;12(1):e0169140. doi: 10.1371/journal.pone.0169140. eCollection 2017.
A Modified Robbins Device (MRD) was installed in a full-scale water distribution system to investigate biofouling and metal depositions on concrete, high-density polyethylene (HDPE) and stainless steel surfaces. Bulk water monitoring and a KIWA monitor (with glass media) were used to offline monitor biofilm development on pipe wall surfaces. Results indicated that adenosine triphosphate (ATP) and metal concentrations on coupons increased with time. However, bacterial diversities decreased. There was a positive correlation between increase of ATP and metal deposition on pipe surfaces of stainless steel and HDPE and no correlation was observed on concrete and glass surfaces. The shared bacterial diversity between bulk water and MRD was less than 20% and the diversity shared between the MRD and KIWA monitor was only 10%. The bacterial diversity on biofilm of plumbing material of MRD however, did not show a significant difference suggesting a lack of influence from plumbing material during early stage of biofilm development.
在一个全尺寸的供水系统中安装了一个改良的罗宾斯装置（MRD），以研究混凝土、高密度聚乙烯（HDPE）和不锈钢表面上的生物污垢和金属沉积情况。采用原水监测和KIWA监测仪（带有玻璃介质）对管壁表面的生物膜生长进行离线监测。结果表明，试片上的三磷酸腺苷（ATP）和金属浓度随时间增加。然而，细菌多样性却降低了。不锈钢和HDPE管表面的ATP增加与金属沉积之间存在正相关，而在混凝土和玻璃表面未观察到相关性。原水与MRD之间共享的细菌多样性小于20%，MRD与KIWA监测仪之间共享的多样性仅为10%。然而，MRD管道材料生物膜上的细菌多样性没有显示出显著差异，这表明在生物膜发育的早期阶段，管道材料的影响不大。
