Phosphor recovery crystallization reactor and phosphor recovery method

A technology of crystallization reactor and crystallization reaction, which is applied in chemical instruments and methods, phosphorus halide/oxyhalide, water/sewage treatment, etc., to achieve the effect of improving efficiency, saving investment and low operating cost

Active Publication Date: 2009-12-16
BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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  • Abstract
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However, these reactors have ...

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  • Phosphor recovery crystallization reactor and phosphor recovery method
  • Phosphor recovery crystallization reactor and phosphor recovery method
  • Phosphor recovery crystallization reactor and phosphor recovery method

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] Such as figure 1 , 2 Shown: the phosphorus recovery crystallization reactor of the present invention is an inner and outer cylinder structure, and its inner cylinder is located at the center of the reactor outer cylinder; The crystallization reaction zone 2 at the bottom of the inner cylinder, the sedimentation separation zone 3 located at the middle and upper part of the outer cylinder, the high-concentration phosphorus sludge zone 4 at the bottom of the outer cylinder, and the sedimentation separation zone 3 and the high-concentration phosphorus sludge zone 4 Between the buffer zone 5, the buffer zone 5 is also located under the crystallization reaction zone 2; a microporous aeration system 6 is installed at the bottom of the aeration stripping zone 1, and a water inlet system 7 is provided at the top; The top of the separator area 3 is pro...

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Abstract

The invention relates to a phosphor recovery crystallization reactor and a phosphor recovery method. The reactor is in inner-outer dual barrel structure, wherein the inner barrel is disposed at the center position of the outer barrel. The reactor includes an aeration stripping area, a crystallization reaction area, a precipitation separation area, a high concentration phosphor mud area and a buffering area, wherein the crystallization reaction area communicates with the precipitation separation area through the upper portion of the buffering area, so that the sewage water after the crystallization reaction in the crystallization reaction area flows into a precipitation separation area without affecting the high concentration phosphor mud area. The invention fully utilizes effective ingredients in the anaerobic treated water of the high concentration waste water of domestic animal and poultry, enhances pH value of the anaerobic treated water by aeration stripping, removes phosphor in the form of crystal of ammoniomagnesium phosphate using relatively high concentration of phosphor and ammonian in the waste water of domestic animal and poultry. The total removal rate of the phosphor can reach 50-60% without any chemical agents added. Phosphor is recovered in form of crystals, which is beneficial to utilization of the recovered phosphor.

Description

technical field [0001] The invention relates to a device for treating livestock and poultry wastewater and recovering phosphorus resources, in particular to a crystallization reactor for phosphorus recovery and a method for efficiently recovering phosphorus from livestock and poultry wastewater. Background technique [0002] The treatment of livestock and poultry wastewater is one of the most important components in environmental governance. At present, the treatment of livestock and poultry wastewater is mainly based on terminal treatment and standard discharge. At the same time, part of the energy—biogas—is recovered through anaerobic treatment during the treatment process. In recent years, with the increasing depletion of phosphorus and other mineral resources, people have begun to pay attention to the recovery of phosphorus and other mineral resources in wastewater. The theory and technology of phosphorus recovery have also been developed to a certain extent. At presen...

Claims

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Application Information

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IPC IPC(8): C02F1/58C01B25/10
Inventor 宋英豪王焕升贾立敏刘俐媛廖日红何刚
Owner BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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