Recomendações
Determinação do tempo de contato - Portaria GM/MS n° 888
Annex 3
Annex 4
Annex 5
Annex 6
Annex 7
Annex 8

Input data

Temperature

pH

Free residual chlorine concentration

Output data

Minimum contact time

Description

Given the pH, the temperature and the concentration of chlorine in water, finds the necessary contact time to assure its disinfection. Contact chamber

Annex 3

Table of minimum contact time to be observed for disinfection in collective alternative water supply systems and solutions with collection from surface water sources, according to the concentration of free residual chlorine, the temperature and the pH of the water.

Annex 4

Table of minimum contact time to be observed for disinfection in collective alternative water supply systems and solutions with collection from surface water sources, according to the concentration of combined residual chlorine (chloramines) and the temperature of the water, for water pH values ​​between 6.0 and 9.0.

Annex 5

Table of minimum contact time to be observed for disinfection in collective alternative water supply systems and solutions with collection from surface water sources, according to the concentration of chlorine dioxide and the temperature of the water.

Annex 6

Table of minimum contact time to be observed for disinfection in collective alternative water supply systems and solutions with collection from underground sources, according to the concentration of free residual chlorine, the temperature and the pH of the water.

Annex 7

Table of minimum contact time to be observed for disinfection in collective alternative water supply systems and solutions with collection from underground sources, according to the concentration of combined residual chlorine (chloramines) and the temperature.

Annex 8

Table of minimum contact time to be observed for disinfection in collective alternative water supply systems and solutions with collection from underground sources, according to the concentration of chlorine dioxide and the temperature of the water.

References

  • BRASIL. Ministério da Saúde. Gabinete do Ministro. Portaria GM/MS n° 888, de 4 de maio de 2021. Brasília, 2021.