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Reagent addition method and system thereof for fly ash stabilizing treatment on the basis of XRF detection

A technology for stabilization treatment and fly ash, applied in the field of environmental engineering

Active Publication Date: 2018-09-28
SHANGHAI ENVIRONMENTAL & SANITARY ENG DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are no applications and reports on the application of XRF to the production process of fly ash stabilization treatment

Method used

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  • Reagent addition method and system thereof for fly ash stabilizing treatment on the basis of XRF detection
  • Reagent addition method and system thereof for fly ash stabilizing treatment on the basis of XRF detection
  • Reagent addition method and system thereof for fly ash stabilizing treatment on the basis of XRF detection

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Embodiment 1

[0140] In actual work, a factory in a certain place adopts the medicament dosing method of the present invention to carry out fly ash stabilization treatment. Pb element is selected as the main control element. The plant's fly ash stabilization treatment standard is implemented in GB18598-2001 "Hazardous Waste Landfill Pollution Control Standard", in which the Pb stabilization control limit is 5mg / L. The first batch of fly ash samples were collected in the plant for 20 consecutive days, one fly ash sample was collected every day, a total of 20 samples, numbered 1, 2, 3...20. XRF detection is performed on each sample, such as 10 g of fly ash, to obtain the XRF concentration value of Pb in each sample, such as 10 g of fly ash.

[0141] First, take the first batch of fly ash samples with the same mass, such as 100g, and carry out leaching according to the horizontal oscillation method in the standard HJ557-2010, and use a spectral analysis instrument to measure the content of Pb ...

Embodiment 2

[0154] In actual work, a factory in a certain place adopts the medicament dosing method of the present invention to carry out fly ash stabilization treatment. Pb, Cr, Zn, Cu, As, Cd, Hg, Ba and Ni elements are selected as the main control elements. The fly ash stabilization treatment standard of the plant is implemented according to GB18598-2001 "Hazardous Waste Landfill Pollution Control Standard". In the standard, the Pb stabilization control limit is 5mg / L, the Cr stabilization control limit is 12mg / L, the Zn stabilization control limit is 75mg / L, the Cu stabilization control limit is 75mg / L, and the As stabilization control limit is 75mg / L. The limit is 2.5mg / L, the Cd stabilization control limit is 0.50mg / L, the Hg stabilization control limit is 0.25mg / L, the Ba stabilization control limit is 150mg / L, and the Ni stabilization control limit is 15mg / L. The first batch of fly ash samples were collected in the plant for 20 consecutive days, one fly ash sample was collected e...

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Abstract

The invention provides a reagent addition method for fly ash stabilizing treatment on the basis of XRF detection and further provides a reagent addition system for same, and more furthermore, providesa use method of the reagent addition system. The reagent addition method and the reagent addition system can perform real-time detection to total weight of heavy metal in fly ash in every batch during the fly ash stabilizing treatment, so that not only is unqualified stabilization due to insufficient addition amount of reagents avoided, but also a problem of waste of reagents due to excessive addition of the reagents can be avoided. The system is increased in reaction speed when treating the problems. Fly ash stabilizing treatment is turned from extension into fine management.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and relates to a medicament dosing method and system for fly ash stabilization treatment based on XRF detection, and in particular to a chelating agent and water dosing method for fly ash stabilization treatment based on XRF detection , Fly ash stabilizing agent dosing system and using method thereof. Background technique [0002] The fly ash of the flue gas purification system of domestic waste incineration plants (hereinafter referred to as fly ash) is a kind of hazardous waste, which contains a large amount of heavy metals, such as Pb, Cr, Zn, Cu, As, Cd, Hg, Ba, Ni, etc. Stabilized treatment and each batch of processed fly ash must pass the inspection before it can be disposed of in landfill. The most commonly used fly ash stabilization treatment technology is the chemical agent chelation method, that is, the chelating agent is diluted and stirred with the fly ash, and the ...

Claims

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Application Information

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IPC IPC(8): G01N23/223
CPCG01N23/223
Inventor 邰俊张瑞娜鲁海霖黄立亮余召辉贾川毕珠洁王晓东刘丹丹
Owner SHANGHAI ENVIRONMENTAL & SANITARY ENG DESIGN INST CO LTD
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