Biofilm responses to ageing and to a high phosphate load in a bench-scale drinking water system

Pyrosequencing analysis of eukaryotic and bacterial communities in faucet biofilms

“…The matrix material was also observed previously in the biofilms developed on the surface of a plastic substratum in water meters and showerheads (Feazel et al, 2009;Hong et al, 2010). It is found that polysaccharides increased in the biofilm with aging (Batte et al, 2003). Obviously different morphologies of biofilm were observed at site WSW, where sparse populations of mainly short, rod-shaped organisms attached on the gasket with low cell density, showing the morphological characteristics of early biofilm formation (Martiny et al, 2003).…”

“…The type of bacterial communities present in a DWDS and the disinfection regime applied can also affect pathogen survival and disinfection efficacy (Batte et al, 2003;Eichler et al, 2006). DWDS bacterial community can be influenced by chlorine levels, concentration of organic compounds, water temperature, and physicochemical characteristics of pipe materials (Niquette et al, 2001).…”

Pyrosequencing Analysis of Bacterial Biofilm Communities in Water Meters of a Drinking Water Distribution System

“…To overcome these challenges, several studies have used model DWDS to mimic full-scale DWDS so as to address treatment effects on water quality. The researchers in these studies reported that episodic chlorination may accelerate the development of microbial communities with increased resistance to disinfectants (4) and that bacterial diversity can also affect disinfection efficacy and pathogen survival (1). In addition, the occurrence of bacterial community succession was observed in a model DWDS (17), which indicated the importance of longterm monitoring of bacterial biofilm development in the DWDS.…”

Synthesis of Polymer Sensor for Detection of Phosphate in Water

“…organic phosphate and polyphosphate. Nevertheless, the most bioavailable species is orthophosphate, PO 4 3-, HPO 4 2-and H 2 PO 4 -, etc. [1].…”

“…It is also most abundant one, since it can be stabilized at neutral pH [2]. The key point source for phosphate are the municipal wastewater [3] and the application as corrosion inhibitor in the wastewater treatment system [4], while the gigantic amount of phosphate released to the environment comes from the non-point source, such as agricultural fertilizer and livestock excretion [5], [6]. High concentration of phosphate in water body, especially a closed or semi-closed to drainage, causes the eutrophication [7]- [10].…”