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1 2002

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Zastosowanie licznika cząstek do oceny wtórnego zanieczyszczenia wody produktami korozji przewodów wodociągowych

Toczyłowska B., Rutkiewicz A.

Ochrona Środowiska

2002

nr 1

21-26

Providing information about the number and size of the panicles that are present in the water, particle counters can be of help in analyzing the recontamination of potable water in the distribution system. For particle size larger than 2 um, the particle counter method is more sensitive than the one involving a turbidimeter, which is conventionally used in water quality monitoring. The objective of the study was to establish if there is a correlation between the number or size of the particles and the aggressiveness of the water. The results show that particle counts can be regarded as reliable indicators when assessing the probability of steel corrosion. Since the use of phosphate-based chemicals in the treatment of potable water is becoming increasingly frequent, experiments were carried out in order to examine the relationship between the efficiency of incrustation removal from the pipeline with Clarofos 124 (a combination of poly- and monophosphates) and the total particle count in the water. Monitoring of quality variations when the water was treated with phosphate-based chemicals revealed that the particle count provided more information about water quality variations than did iron content. The investigations also showed that the total particle count is not only a useful parameter in assessing the performance of the water distribution system, but a reliable indicator of potential failure as well.