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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Reuse and energy potential of greywater
 Bartoník, A. ; Holba, Marek ; Plotěný, K. ; Vrána, J. ; Ošlejšková, M.
Greywater is the leftover water from baths, showers, hand basins and washing machines only, what implies that it is free of faeces and urine. Greywater can be recycled on-site (called white water) for flushing toilets, urinals, landscape irrigation and constructed wetlands. The heat energy reuse from greywater has been recently discussed as a hot issue. Paper deals with the new British Standard BS 8525-1(2) that introduce the issue of greywater in buildings, as well as progress in the new Czech standard preparation. A various technologocial designs are introduced including return of investment analyses.
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Using of flow cytometry for the detection of bacterial filtration efficiency in (waste)water treatment processes
 Mikula, Přemysl ; Lev, J. ; Kalhotka, L. ; Holba, Marek ; Kimmer, D. ; Maršálek, Blahoslav ; Vítězová, M.
Aim of the study was to detect filtration efficiency of several (nano)materials used for the filtration/removal of E. coli bacteria or natural bacterial communities from water samples. Filtration efficiency was evaluated by commonly used culticvation techniques as well as by flow cytometry (FCM). Although filtration efficiency of certain nanomaterials detected by cultivation was very high (>99%), it was demonstarted that sample filtration does not have to lead to significant decline of total bacterial counts measured by FCM. From this viewpoint FCM can be considered as a suitable analytical method for the assessment of wastewater treatment processess efficiency, which, compared to cultivation techniques, possess some disadvantages (difficult standardization) but also has several advantages (speed, more realistic measurement conditions).
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