CFD-based heavy metal wastewater sulfuration precipitation reactor optimization method

A technology of sulfide precipitation and optimization method, applied in the direction of chemical process analysis/design, complex mathematical operations, etc., can solve the problems of materials, time waste, can not meet the analysis requirements of reactor design optimization, etc., to achieve the effect of saving time

Active Publication Date: 2019-09-24
CENT SOUTH UNIV
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Problems solved by technology

This method will cause technical problems such as great waste of materials and time, and cannot meet the analysis requirements for reactor design optimization

Method used

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  • CFD-based heavy metal wastewater sulfuration precipitation reactor optimization method
  • CFD-based heavy metal wastewater sulfuration precipitation reactor optimization method
  • CFD-based heavy metal wastewater sulfuration precipitation reactor optimization method

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Embodiment

[0057] 1) Establish the geometric model of the reactor, and establish according to the design ideas such as Figure 1 In the geometric structure of the reactor shown, 1 in the figure is the inlet of heavy metal wastewater, 2 is the inlet of sodium sulfide solution, and 3 is the outlet of the reactor. The overall height of the reactor is 20cm, and the diameter is 4cm. The heavy metal waste water and the sodium sulfide solution enter the reactor through lateral convection at a height of 18 cm. 0m and z = 0.180m. The axis of the water outlet is in the z direction, and its coordinates are x=0m and y=0m, and the axis of the sodium sulfide solution inlet is in the x direction, and its coordinates are y=0m and z=0.180m.

[0058] 2) Determine the control equation of the model, select the control equation according to the chemical transfer field and the flow field, in order to simulate the influence of the reactor structure on the mass transfer effect, the chemical reaction kinetics, ...

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Abstract

The invention discloses a CFD-based heavy metal wastewater sulfuration precipitation reactor optimization method. The method comprises the following steps: establishing a fluid computational domain geometric model of a sulfuration precipitation reactor; according to the established geometric model, determining a control equation and defining a boundary condition and an initial value of the model according to an actual situation and a design thought; meshing the geometric model of the sulfuration precipitation reactor, and solving flow field and reaction substance concentration distribution and the like of the model by using multi-physical field coupling; by modifying related parameters, repeating the process, performing multiple numerical simulation calculations, and comparing and analyzing calculation results under different geometric structures and technological parameters to obtain the optimal reactor structure and technological parameters. According to the invention, simulation calculation can be carried out on the sulfuration precipitation process under different reactor structures and process parameters to obtain results such as inlet and outlet water concentrations of the reactor, flow field distribution characteristics in the reactor, concentration distribution of each substance and the like so as to evaluate the reactor performance under different conditions.

Description

technical field [0001] The invention belongs to the technical field of heavy metal wastewater treatment simulation technology, and in particular relates to a CFD-based method for optimizing a heavy metal wastewater sulfidation precipitation reactor. Background technique [0002] The development of mineral resources, metal processing and smelting, chemical production, and fertilizer industry have been proven to be the main sources of heavy metal pollution, and the heavy metal wastewater produced in large quantities is an urgent problem to be solved. In recent years, with the improvement of environmental protection requirements, higher requirements have been put forward for the discharge of heavy metal sewage. Correspondingly, more efficient treatment processes and devices need to be further developed. [0003] For the treatment of heavy metal industrial wastewater, the sulfidation precipitation method has made great progress in the application in recent decades due to its app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C20/10G06F17/11
CPCG16C20/10G06F17/11
Inventor 曾伟志李博郭文香李垦刘山胡辉
Owner CENT SOUTH UNIV
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