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US 8,263,034 B2Granted
Nitrogen-rich waste water treatment method and method for producing struvite
AssigneeEntechs Co.
InventorIn Chung
Life of this patent
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Abstract
The present invention relates to an efficient method of removing nitrogen and producing struvite from nitrogen-rich wastewater. Additionally, the present invention provides an economical method of removing nitrogen while producing a large quantity of struvite from nitrogen-rich wastewater with an appropriate usage of a solution containing phosphorus ion and a solution containing magnesium ion and/or calcium ion.
Claims17
A method of treating nitrogen-rich wastewater and producing struvite, comprising the steps of:
- (a) anaerobic treatment step treating the wastewater and a first solution containing phosphorus ion with anaerobic microorganisms in anaerobic reactor;
- and
- (b) struvite formation step introducing the treated wastewater of step (a) into a struvite reactor and producing struvite.
Dependencies are inferred from the claim text.