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Fly ash stabilizing treatment agent refined adding method based on XRF detection

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

Active Publication Date: 2018-07-06
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

[0005] 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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  • Fly ash stabilizing treatment agent refined adding method based on XRF detection
  • Fly ash stabilizing treatment agent refined adding method based on XRF detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] According to the refinement dosing method of the present invention, the first batch of fly ash samples such as 10g are detected by XRF, and the Pb element concentration values ​​detected by XRF are 500mg / kg, 1000mg / kg, 1500mg / kg, and 1800mg respectively. / kg, 2500mg / kg, 3500mg / kg, 5200mg / kg, 6000mg / kg, 6500mg / kg, 7500mg / kg fly ash samples 1#, 2#, 3#, 4#, 5#, 6#, 7# , 8#, 9#, 10#.

[0134] The same mass, such as 100g of fly ash samples 1#, 2# is added with medicament, the mass percentage N% of medicament and fly ash sample is 60%, the mass ratio of chelating agent and fly ash sample is 0.05%, water and fly ash sample The mass ratio % of the chelated ash is 59.95%, and the chelated ash is obtained by chelation. Off-white dry powder ash appears, and it is cured in a cool and dry place for 24 hours. The chelated ash is cured, leached according to the horizontal oscillation method in the standard HJ557-2010, and the content of Pb element in the leachate is measured by a spe...

Embodiment 2

[0143] In actual work, a factory in a certain place adopts the method of finely dosing medicaments in the present invention for fly ash stabilization treatment. 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, and the number of samples collected was 20. The fly ash samples were collected once a day for 20 consecutive days. 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. Among them, the lowest value A1 of the Pb element XRF detection concentration in the first batch is 800mg / kg, the highest value A5 of the Pb element XRF detection concentration in the first batch is 7000mg / kg, according to A2 is 1 between A1 and A5 / 4 quantile point, A3 is the 2 / 4 quantile point between...

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Abstract

The invention provides a fly ash stabilizing treatment agent refined adding method based on XRF detection, also provides a fly ash stabilizing agent adding system based on XRF detection, and further provides a using method of the fly ash stabilizing agent adding system based on XRF detection. By means of the fly ash stabilizing treatment agent refined adding method based on XRF detection, real-time detection can be carried out on the total amount of each batch of fly ash heavy metal in the fly ash stabilizing treatment process, the fly dust substandard stabilization caused by insufficient adding agent amount can be effectively avoided, the agent waste phenomenon caused by too much adding agent amount can be avoided, the reaction speed of the system for treating problems is increased, the manual operation working strength is reduced, and fly ash stabilizing treatment can be is improved from the extensive form into refined management.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and relates to a refined dosing method for fly ash stabilization treatment based on XRF detection, in particular to a refined dosing method of chelating agent and water for fly ash stabilization treatment based on XRF detection plus method. 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, etc., which must be stabilized 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 solution is diluted and stirred with the fly ash, and the heavy metal ions and the chelating agent undergo a chela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00G01N23/223
CPCB09B3/00G01N23/223
Inventor 陈善平余召辉张瑞娜邰俊贾川毕珠洁欧阳创夏旻
Owner SHANGHAI ENVIRONMENTAL & SANITARY ENG DESIGN INST CO LTD
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