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Materiały, z których wykonana zostanie instalacja wodociągowa, mogą powodować wtórne zanieczyszczenie wody przeznaczonej do spożycia przez ludzi. Sztuczne tworzywa polimerowe mogą odpowiadać za wtórne chemiczne i mikrobiologiczne zanieczyszczenie wody wewnątrz przewodów ze względu na wydzielanie substancji szkodliwych dla zdrowia konsumentów lub sprzyjanie wzrostowi drobnoustrojów. Uwzględnienie obu...
Disinfection for drinking water ought to be safe both in microbiology and in chemistry. This paper addresses by-products with carcinogenicity-mutagenicity-teratogenicity produced during chlorination disinfection. Types and formation of chlorination disinfection by-products (CDBPs) in drinking water are briefly analyzed. Toxicity and health effect of the CDBPs is reviewed. Measures to control CDBPs...
Ultrafiltration technology hold great promise to provide better water quality, especially for stringent requirements and thus the basic characteristics of ultrafiltration membrane was introduced and its advantages and disadvantages were discussed in this paper. Ultrafiltration membrane fouling mechanism, the factors affecting membrane fouling, and membrane pollution control measures were summed up...
The variation of Assimilable Organic Carbon (AOC) during the coagulation of raw surface water and synthetic water by Al2(SO4)3 was investigated. It was found that the removal rate of AOC concentration during alum coagulation of raw surface water was about 49.5% at high coagulant dosages. The AOC of water decreased efficiently during coagulation in the case of synthetic water at lower coagulant dosages,...
This paper presents experiments conducted using a high voltage pulsed spark plasma discharge having the following parameters: peak-to-peak voltage 25 kV, peak-to-peak current 400 A, pulse duration 1.8 mus, frequency 1-50 Hz and energy per pulse 2 J. This study demonstrates that a rather low energy input of 75 J/L of water is required to obtain a one-log reduction in Escherichia coli concentration...
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