Device and method for inducing generation of struvite by virtue of microorganisms

A struvite and microbial technology, applied in the field of facultative anaerobic microorganism-induced mineralization, can solve the problems of complex operation, high cost, secondary pollution, etc., and achieve simple renewal operation, strong adsorption, and strong resistance to impact loads effect of ability
CN106520527AActive Publication Date: 2017-03-22SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Publication Date
2017-03-22

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Abstract

The invention discloses a device and a method for inducing generation of struvite by virtue of microorganisms. The device comprises a reaction unit, a precipitation unit and a water circulating unit, wherein the reaction unit comprises a fluidized bed reactor, packing in the fluidized bed reactor, a pH meter and a temperature regulator; a precipitator in the precipitation unit communicates with the fluidized bed reactor by virtue of a conduit; three outlets are formed in the precipitator; and the water circulating unit and the fluidized bed reactor can achieve reflux with the precipitation unit. According to the device provided by the invention, the packing in the fluidized bed reactor can serve as an attachment carrier of the microorganisms; and by virtue of the water circulating unit, a water flow can rise more uniformly, which is conducive to the fluidized growth of struvite crystals, and generated struvite particles are uniform and dense. The size of the device provided by the invention is greatly diminished, so that engineering investment and occupied land area are significantly reduced; and the device is low in energy consumption, high in efficiency and strong in operating flexibility, and the device has an important application value.
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Description

technical field

[0001] The invention relates to the field of mineralization induced by facultative anaerobic microorganisms, in particular to a 2+ , NH 4 + and PO 4 3- Device and method for inducing struvite formation in wastewater. Background technique

[0002] Mg in industrial wastewater 2+ , NH 4 + and PO 4 3- Most of the removal methods are chemical methods, such as struvite crystal precipitation method, the basic principle is to make Mg 2+ , NH 4 + and PO 4 3- A chemical reaction occurs to form double salt struvite (MgNH 4 PO 4 ·6H 2 O). Struvite is a kind of ore, also known as bird and animal feces, and its composition is MgNH 4 PO 4 ·6H 2 O, because it is rich in elements such as nitrogen and phosphorus, and is not easy to be washed away by water, it can be used in floodplains, saline-alkali land and other environments. These characteristics make it a high-quality slow-release fertilizer that can achieve good economic and environmental benefits and...

Claims

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