Abstract: A system and method is provided for removing organic matter from water. The method includes contacting the water with a powdered material with an anionic or cationic surface charge and having a particle size of between 0.1 mm and 2 mm. The powdered material is a modified product of natural origin. The system and method also provides for the regeneration of the powdered material in situ and reused.

Abstract: A method for decreasing the dissolved oxygen content in water used for extracting oil from rocks includes directing water and gas into a housing containing at least one hydrophobic membrane such that the water contacts only a first surface of the membrane and the gas contacts only a second surface of the membrane. The pressure of the gas is decreased thereby causing the oxygen in the water to pass through the first side of the membrane to the second side of the membrane and mix with the gas. A system for decreasing the dissolved oxygen content in water used for extracting oil from rocks includes a plurality of membrane modules. Each module contains at least one hydrophobic membrane. A water supply inlet and a gas supply inlet direct water over the first and second surface respectively of each of the hydrophobic membranes. A water outlet and a gas outlet direct water and gas respectively out of the plurality of membrane modules.

Abstract: The invention relates to a method of producing a coagulant product. It is characterized in that a starting material is prepared containing sludge resulting from the treatment of drinking water and an ore containing iron and/or aluminum, said starting material undergoing acid attack to form iron salts, aluminum salts or a mixture thereof. Application of said coagulant during implementation of a physico-chemical step of the treatment of waste water and/or industrial water.

Abstract: The invention relates to an electrokinetic method for determining the electrostatic charge state of a porous membrane during filtering by measuring trans-membrane variations of a flow potential. The use of the inventive method for controlling and characterising the filtering membrane cleaning efficiency is also disclosed.

Abstract: A system and method is provided for removing organic matter from water. The method includes contacting the water with a powdered material with an anionic or cationic surface charge and having a particle size of between 0.1 mm and 2 mm. The powdered material is a modified product of natural origin. The system and method also provides for the regeneration of the powdered material in situ and reused.

Abstract: The invention concerns a method for generating chlorine by reacting a chlorite with an acid, which consists in using a C1-C12 alkanesulphonic acid and, more particularly, methane-sulphonic acid.