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5. Chemistry
5.1 Some useful quantities in water chemistry
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Notion of biofilm in water
Biofilm is made up of microscopic organisms attached to the walls of tanks, pipes and heat exchange surfaces. In the event of shock, vibration or a sudden change in hydraulic regime (sudden increase in flow rate, water hammer), the biofilm can detach and disperse these micro-organisms. A biofilm is defined as a microbial community immobilized on a surface and often embedded in a fibrous matrix of extracellular polymers.
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Corrosive and aggressive water
Water is said to be corrosive when it is capable of attacking metals and their alloys (copper, steel). This notion should not be confused...
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Chemistry
Filtration
Bibliography
Standardization
- Composants de tuyauterie. Termes et définitions - NF E29-011 - 07-06
- Tuyauteries DN-ISOPN. Définitions et gammes normalisées - NF EN ISO 6708 - 12-95
- Composants de réseaux de tuyauteries. Définition et sélection des DN (diamètre nominal). Indice de classement E 29-001 - EN ISO 6708 - 12-95
- Brides et leurs assemblages. Composants de réseaux de tuyauteries. Définition et sélection des PN. Indice de classement...
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