Water treatment method using an inorganic powder reagent with high specific surface area including a step of recycling said reagent
AssigneeOtv SA
InventorsAbdelkader Gaid, Mickael Uyttewaal, Annie Tazi-Pain
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Abstract
A method of treating water including mixing the water with an inorganic powder reagent for reducing the content of organic matter. The water, after being mixed with the inorganic powder reagent, is subjected to a membrane separation step that produces blow off products that are then separated into two fractions: a first fraction containing a majority portion of the powder reagent in a first stream of water, and a second fraction containing a majority portion of inorganic matter not absorbed on the inorganic powder reagent rejected by the membrane separation step in a second stream of water.
Claims29
A method of treating water, comprising:
- a. contacting the water with at least one inorganic powder reagent with high specific surface area for reducing the content of organic matter in the water;
- and
- b. a membrane separation step including treating blow off products derived from the membrane separation step by separating the blow off products into at least two fractions:
- i. a first fraction containing a majority of the inorganic powder reagent in a first stream of water;
- ii. a second fraction containing a majority of organic matter not absorbed by the inorganic powder reagent rejected by the membrane separation step and concentrated in the blow off products in a second stream of water having a flow rate that exceeds the first stream of water;
- and
- iii. wherein the first fraction containing a majority of the inorganic powder reagent is rejuvenated in the water on the upstream side of where the water is treated with the inorganic powder reagent.
A system for treating water comprising:
- a. at least one chamber for mixing the water with an inorganic powder reagent for reducing the content of organic matter in the water;
- b. at least one membrane separation unit comprising at least one hydraulic separation unit and wherein the hydraulic separation unit separates blow off products derived from the membrane separation unit into at least two fractions:
- a first fraction containing a majority of the inorganic powder reagent in a first water stream;
- a second fraction containing a majority of organic matter not absorbed by the inorganic powder reagent rejected by the membrane separation unit and concentrated in the blow off products in a second water stream;
- and a connector for permitting the first fraction to be conveyed to the chamber where the water is mixed with the inorganic powder reagent.
Dependencies are inferred from the claim text.