Phosphorus recovery crystallization reactor and phosphorus recovery method

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

Active Publication Date: 2011-12-07
BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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However, these reactors have not been used in actual engineering

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  • Phosphorus recovery crystallization reactor and phosphorus recovery method
  • Phosphorus recovery crystallization reactor and phosphorus recovery method
  • Phosphorus recovery crystallization reactor and phosphorus 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] like 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 provid...

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Abstract

A phosphorus recovery crystallization reactor and a phosphorus recovery method, the reactor is a structure of inner and outer double cylinders, the inner cylinder is located at the center of the outer cylinder of the reactor, and the reactor includes: an aeration stripping zone, a crystallization reaction zone , a precipitation separation area, a high-concentration phosphorus sludge area, and a buffer zone; wherein, the crystallization reaction area and the precipitation separation area are connected through the upper part of the buffer zone, so that the sewage after the crystallization reaction in the crystallization reaction area enters the precipitation The separation area does not affect the high concentration phosphorus sludge area. The present invention fully benefits the effective components in the anaerobic treatment of high-concentration livestock and poultry wastewater, improves the pH value of the anaerobic effluent by means of aeration and blow-off, utilizes the higher concentration of phosphorus and ammonia nitrogen in the livestock and poultry wastewater, and passes the phosphorus through Magnesium ammonium phosphate is removed in the form of crystals, and the removal rate of total phosphorus can reach 50-60%, without adding any chemical agents. The recovered phosphorus is in the form of crystals, which is beneficial to the utilization of recovered phosphorus.

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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Patent Type & Authority Patents(China)
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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