E - Fixed Constructions – 03 – B
Patent
E - Fixed Constructions
03
B
E03B 7/09 (2006.01) B08B 9/02 (2006.01) C02F 5/08 (2006.01) C11D 3/02 (2006.01) C11D 3/20 (2006.01) C11D 3/34 (2006.01) C11D 7/08 (2006.01) C11D 7/26 (2006.01) C11D 7/32 (2006.01) C23G 1/02 (2006.01) E03B 7/07 (2006.01) E03C 1/10 (2006.01)
Patent
CA 2193494
A method of cleaning and maintaining potable water distribution systems which have reduced flow due to an increase of water scale deposits, sediment, and the like on the inside surface of the pipe is disclosed. An aqueous acidic cleaning solution (12) is heated and circulated through the pipe (25) to be treated for a sufficient time to dissolve and loosen the scale and sediment, and the spent solution containing dissolved or suspended scale and sediment is flushed from the pipe (25) to provide a cleaned pipe with improved water flow. It is also desirable to flush the water distribution pipe system with high pressure water after the treatment to remove loosened scale and sediment that was not removed during the circulation and flushing of the treating solution (12).
L'invention concerne un procédé de nettoyage et d'entretien de systèmes de distribution d'eau potable, dont le débit est réduit à cause de l'augmentation de dépôts ou de sédiments sur la surface intérieure des conduites. On chauffe une solution de nettoyage acide et aqueuse (12) et on la fait circuler à travers la conduite (25) à traiter pendant une durée suffisante pour dissoudre et détacher les dépôts ou les sédiments, puis on évacue de ladite conduite (25) la solution utilisée contenant les dépôts et les sédiments dissous ou en suspension, ce qui permet d'obtenir une conduite nettoyée, dont le débit est amélioré. Il est également souhaitable de rincer les conduites avec de l'eau sous haute pression après le traitement, afin d'éliminer les dépôts et les sédiments qui n'auraient pas été extraits pendant la circulation et le rinçage de la solution de traitement (12).
Ludwig Jerome H.
Perry Edward Charles
H.e.r.c. Products Incorporated
Macrae & Co.
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