Translations:Water - Biosand Filter/52/en : Différence entre versions

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While water is poured into the filter, the level of water (also called the hydraulic head) is elevated and pushes the water) through the diffuser and the filter. The level of water in the reservoir drops as the water that flows steadily through the sand. When the reservoir is full, the output should be 400mL per minute. The output will diminish gradually since there is less pressure to push water through the filter. The water that goes through the filter contains dissolved oxygen, nutrients and contaminants. It brings some oxygen and nutrients that are needed by the micro-organisms in the biological layer. The suspended particles and large pathogens are caught in the first layer of sand and they are clog part of the pores between the grains of sand. This clogging slows the output of the filter over time. Users may occasionally resort to a ‘’’swirl and dump’’’ maintenance procedure to restore the output flow of the filter.
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While water is poured into the filter, the level of water (also called the hydraulic head) is elevated and pushes the water) through the diffuser and the filter. The level of water in the reservoir drops as the water flows steadily through the sand. When the reservoir is full, the output should be 400mL per minute. The output will diminish gradually since there is less pressure to push water through the filter. The water that goes through the filter contains dissolved oxygen, nutrients and contaminants. It brings some oxygen and nutrients that are needed by the micro-organisms in the biological layer. The suspended particles and large pathogens are caught in the first layer of sand and they are clog part of the pores between the grains of sand. This clogging slows the output of the filter over time. Users may occasionally resort to a ‘’’swirl and dump’’’ maintenance procedure to restore the output flow of the filter.

Version actuelle datée du 15 août 2023 à 21:09

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Définition du message (Water - Biosand Filter)
Lorsque de l'eau est versée dans le filtre, le niveau de l'eau (aussi appelé charge hydraulique) s'élève et pousse l'eau ) travers le diffuseur et le filtre. Le niveau de l'eau dans le réservoir descend tandis que l'eau s'écoule régulièrement à travers le sable. Lorsque le réservoir est plein, le débit devrait être de 400mL par minute. Le débit va diminuer au fur et à mesure que le réservoir se vide car il y a moins de pression pour pousser l'eau à travers le filtre. L'eau que l'on verse dans le filtre contient de l'oxygène dissous, des nutriments et des contaminants. Elle apporte une partie de l'oxygène et des nutriments dont ont besoin les micro-organismes de la couche biologique.Les particules en suspension et les agents pathogènes de grande taille sont arrêtés dans la couche supérieure du sable et ils bouchent en partie les pores entre les grains de sable. Ce colmatage entraine un ralentissement du débit du filtre dans le temps. Les utilisateurs peuvent occasionnellement avoir recours à une procédure de maintenance du "remuer et jeter" pour rétablir le débit du filtre.
TraductionWhile water is poured into the filter, the level of water (also called the hydraulic head) is elevated and pushes the water) through the diffuser and the filter. The level of water in the reservoir drops as the water flows steadily through the sand. When the reservoir is full, the output should be 400mL per minute. The output will diminish gradually since there is less pressure to push water through the filter. The water that goes through the filter contains dissolved oxygen, nutrients and contaminants. It brings some oxygen and nutrients that are needed by the micro-organisms in the biological layer. The suspended particles and large pathogens are caught in the first layer of sand and they are clog part of the pores between the grains of sand. This clogging slows the output of the filter over time. Users may occasionally resort to a ‘’’swirl and dump’’’ maintenance procedure to restore the output flow of the filter.

While water is poured into the filter, the level of water (also called the hydraulic head) is elevated and pushes the water) through the diffuser and the filter. The level of water in the reservoir drops as the water flows steadily through the sand. When the reservoir is full, the output should be 400mL per minute. The output will diminish gradually since there is less pressure to push water through the filter. The water that goes through the filter contains dissolved oxygen, nutrients and contaminants. It brings some oxygen and nutrients that are needed by the micro-organisms in the biological layer. The suspended particles and large pathogens are caught in the first layer of sand and they are clog part of the pores between the grains of sand. This clogging slows the output of the filter over time. Users may occasionally resort to a ‘’’swirl and dump’’’ maintenance procedure to restore the output flow of the filter.