Method for recovering phosphorus by synthesizing blue-iron stone by means of combination of capacitive deionization and anaerobic iron reduction

A technology of capacitive deionization and blue iron, applied in separation methods, anaerobic digestion treatment, chemical instruments and methods, etc., can solve problems such as difficult crystallization, achieve great application potential, simple device structure, and low operating costs
CN110240356AInactive Publication Date: 2019-09-17TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2019-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for recovering phosphorus by synthesizing blue-iron stone by means of combination of capacitive deionization and anaerobic iron reduction. The method comprises the steps of firstly, using a capacitive deionization technology to recover phosphorus-containing concentrated water by means of reverse desorption; then, synthesizing the blue-iron stone in the phosphorus-containing concentrated water by means of microbial allochemical iron reduction of an anaerobic system. The method concretely comprises the following steps: firstly, constructing a capacitive deionization device; then, carrying out capacitive deionization; finally, synthesizing the blue-iron stone and recovering. The method for recovering the phosphorus by obtaining blue-iron stone crystal by means of combination of the capacitive deionization technology and anaerobic iron reduction has an important significance for solving the problems of the treatment of phosphorus-containing wastewater and the crisis of phosphate rock resources.
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Description

technical field

[0001] The invention belongs to the technical field of waste water treatment and resource utilization thereof, and relates to a phosphorus recovery method for synthesizing blueite by capacitive deionization combined with anaerobic iron reduction. Background technique

[0002] Phosphorus is the basic element that constitutes all life and is an essential nutrient element for the growth of all living things. However, the rapid mining and consumption of phosphate rock has caused the crisis of phosphorus resource depletion, making phosphorus one of the limiting factors for human development. While phosphate rock resources are facing a crisis, organic phosphorus and inorganic phosphorus discharged to natural water bodies through sewage are increasing day by day, causing serious deterioration of surface water environmental quality. Based on the special physical and chemical properties of phosphorus, it is almost impossible to complete the transfer from water to lan...

Claims

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