Micropollutants removal from filtered raw river water in artificial infiltration/quaternary sediments-based waterworks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25006096%3A_____%2F23%3AN0000011" target="_blank" >RIV/25006096:_____/23:N0000011 - isvavai.cz</a>

Výsledek na webu

<a href="https://iwa-network.org/events/let-2023/" target="_blank" >https://iwa-network.org/events/let-2023/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Micropollutants removal from filtered raw river water in artificial infiltration/quaternary sediments-based waterworks

Popis výsledku v původním jazyce

Karany waterworks, the water supplier for the city of Prague, uses an artificial infiltration of raw Jizera river water into quaternary sediments, where the water naturally achieves drinking water quality. Unfortunately, similarly as in other developed countries, trace concentrations of various micropollutants have been observed in the raw river water. Since the waterworks operates only sand filtration of the water before the infiltration, there is no simple method for removing the traces of micropollutants for the elimination of them from the water and protection of the valuable quaternary sediments. Thus, the only way is to convert a suitable number of sand filters onto activated carbon filters in the existing technology. In order to examine this solution, test columns with identical hydraulic parameters were installed beside the existing sand filters. The columns were filled with 3 types of granular activated carbons (GAC) and have been operating in the same mode as the main sand filters, including shut-down periods depending on raw water quality. Although it was expected that the GAC will be saturated in a short time, it serves for 1,5 years and still removes about 70 – 80 % of micropollutants from the water before infiltration.

Název v anglickém jazyce

Micropollutants removal from filtered raw river water in artificial infiltration/quaternary sediments-based waterworks

Popis výsledku anglicky

Karany waterworks, the water supplier for the city of Prague, uses an artificial infiltration of raw Jizera river water into quaternary sediments, where the water naturally achieves drinking water quality. Unfortunately, similarly as in other developed countries, trace concentrations of various micropollutants have been observed in the raw river water. Since the waterworks operates only sand filtration of the water before the infiltration, there is no simple method for removing the traces of micropollutants for the elimination of them from the water and protection of the valuable quaternary sediments. Thus, the only way is to convert a suitable number of sand filters onto activated carbon filters in the existing technology. In order to examine this solution, test columns with identical hydraulic parameters were installed beside the existing sand filters. The columns were filled with 3 types of granular activated carbons (GAC) and have been operating in the same mode as the main sand filters, including shut-down periods depending on raw water quality. Although it was expected that the GAC will be saturated in a short time, it serves for 1,5 years and still removes about 70 – 80 % of micropollutants from the water before infiltration.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10503 - Water resources

Projekt

<a href="/cs/project/SS01020063" target="_blank" >SS01020063: Snížení obsahu stopových xenobiotik v pitné vodě za specifických podmínek zdroje Káraný</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů