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Quantitative analysis method for heavy metals indesulfurized sludge based on electrokinetic treatment

A technology for quantitative analysis and desulfurization sludge, which is applied in thermal excitation analysis, material excitation analysis, dehydration/drying/thickened sludge treatment, etc., can solve the problem of rarely researched pretreatment agent synergistic electrokinetic method, research, current and pH value Changes in the study of less

Active Publication Date: 2020-11-03
TIANJIN UNIV
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Problems solved by technology

[0004] Although there have been some studies on heavy metals in sludge treated by electricity, there is no research on desulfurization sludge, and there are few studies involving pretreatment agent in conjunction with electrokinetic method, and there are few studies on the changes of current and pH during the reaction process of electrokinetic method

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  • Quantitative analysis method for heavy metals indesulfurized sludge based on electrokinetic treatment
  • Quantitative analysis method for heavy metals indesulfurized sludge based on electrokinetic treatment
  • Quantitative analysis method for heavy metals indesulfurized sludge based on electrokinetic treatment

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[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0017] The invention discloses a quantitative analysis method for treating heavy metals in desulfurization sludge based on electrokinetic reaction, including:

[0018] According to the total amount of heavy metal elements N in the desulfurization sludge before and after electrokinetic reaction treatment and the amount of various forms of heavy metal elements N, the conversion potential TP of heavy metal elements N before and after the electrokinetic reaction treatment was calculated. N , exchange potential EP N and depotential RP N ;

[0019] According to the obtained conversion potential, exchange potential and removal potential, the electrokinetic reaction process is analyzed.

[0020] In some embodiments of the pres...

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Abstract

A quantitative analysis method for heavy metals in desulfurized sludge based on electrokinetic treatment comprises the following steps: calculating the conversion potential TPN, the exchange potentialEPN and the removal potential RPN of the heavy metal element N before and after the electric reaction treatment according to the total amount of the heavy metal element N in the desulfurized sludge before and after the electric reaction treatment and the amount of each form of the heavy metal element N; and analyzing the electrokinetic reaction treatment process according to the obtained conversion potential, exchange potential and removal potential. According to the quantitative analysis method based on electrokinetic treatment of the desulfurized sludge heavy metals, the conversion potential, the exchange potential and the removal potential are calculated according to the total amount of the heavy metals and the amount of each form before and after electrokinetic treatment of the desulfurized sludge. According to the invention, an analysis method is provided for electrokinetic treatment, and the purposes of quantifying the electrokinetic reaction process and discovering reaction efficiency limiting factors are achieved.

Description

technical field [0001] The invention belongs to the field of solid waste treatment, and in particular relates to a quantitative analysis method for heavy metals in desulfurization sludge based on electrodynamic treatment. Background technique [0002] Coal-fired power plants need to desulfurize flue gas. Limestone-gypsum wet desulfurization is a technology that is mainly promoted and used in coal-fired power plants in my country. In 2017 alone, my country's thermal power production capacity was as high as 4662.74 billion watt-hours, which theoretically produced about 90 million tons of desulfurization sludge. As, Cd, Cr, Hg, Pb and other heavy metal elements (heavy metals in this paper refer to heavy metals from the perspective of environmental pollution, including mercury, arsenic, etc.) enter the desulfurization wastewater sludge through sedimentation and flocculation after the flue gas is cooled, and the heavy metal content is already serious. Sludge Disposal in Urban Se...

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Application Information

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IPC IPC(8): C02F11/15G01N21/73
CPCC02F11/15G01N21/73
Inventor 陈冠益韩克旋刘彩霞颜蓓蓓郭祥
Owner TIANJIN UNIV
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