Suez International

Lyonnaise Des Eaux-dumez

Suez Groupe

Isabelle Baudin

Gilles Fay

Zdravka Do Quang

Christophe Anselme

Delphine Steinmann

Sepideh Hassanzadeh

Christophe Caudron

Zdravka Doquang

Naike Noyon

Robert Raczko

Auguste Bruchet

Maïté Brugioni

Jocelyn Leveque

Guy Vanderghote

A method for determining an optimal dose of coagulant for raw water includes a step of determining a value, for the raw water, of a first organic parameter; a step of determining a value, for the raw water, of a second mineral parameter; a step of determining a class of water for the raw water, characterized by the value of the first organic parameter and the value of the second mineral parameter; a step of determining a value, for the raw water, of a third organic parameter; a step of defining a target value, for the clarified water, of the third organic parameter; a step of selecting a function between the third organic parameter and an added dose of coagulant, said function being selected for the class of water and for the value, for the raw water, of the third organic parameter; a step of using the function to determine a first dose of coagulant in order to reach the target value.

Method for determining a dose of coagulant for treating raw water

Process for purifying and filtering fluids, especially water, containing suspended contaminants and using gravity separation means as well as membrane separation means, in a finishing stage, comprising the step of introducing a pulverulent reagent into the fluid stream to be treated downstream of the gravity separation and upstream of the membrane separation, wherein said pulverulent reagent is recycled from the purge of the membrane separation means to the upstream of the gravity separation means.

Process and apparatus for treating waste liquids

Growing community of inventors

Nanterre, France

Isabelle Baudin