Heavy metal stabilizer for disposing waste incineration flying ash, and usage method thereof

A technology of heavy metal stabilizer and waste incineration fly ash, which is applied in the direction of protection devices against harmful chemicals, etc., can solve the problems of inability to judge the stability of stabilizers, secondary public nuisance pollution, and difficult to decompose, and achieve good application prospects and use The effect of simple method and low cost

A technology of heavy metal stabilizer and waste incineration fly ash, which is applied in the direction of protection devices against harmful chemicals, etc., can solve the problems of inability to judge the stability of stabilizers, secondary public nuisance pollution, and difficult to decompose, and achieve good application prospects and use The effect of simple method and low cost

CN107537129AInactive Publication Date: 2018-01-05李杰
0 Cites 26 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heavy metal stabilizer for disposing waste incineration flying ash, and usage method thereof
  • Heavy metal stabilizer for disposing waste incineration flying ash, and usage method thereof
  • Heavy metal stabilizer for disposing waste incineration flying ash, and usage method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The incineration fly ash of a domestic waste incineration plant requires that the fly ash be stabilized and sent to a domestic waste sanitary landfill for safe landfilling. According to HJ / T300-2007 "Solid Waste Leaching Toxic Leaching Method Acetic Acid Buffer Solution Method" to detect heavy metals Pb, Cd, Zn exceeding the concentration limit of heavy metal leach solution required by GB16889-2008 "Pollution Control Standards for Domestic Waste Landfill Sites" (see Table 1 ).

[0039] According to the method test of the present invention, process and stabilize this incineration fly ash, its steps are as follows:

[0040] According to the toxic leached heavy metal species and toxic concentration contained in the fly ash original sample and empirical judgment, a test heavy metal stabilizer formula sample composed of the following components and weight percentages is prepared: phosphate (GPS) 25.0%, inorganic alkaline substance 50% % (25% calcium oxide + 25% magnesium ox...

Embodiment 2

[0050] The incineration fly ash of a domestic waste incineration plant requires that the fly ash be stabilized and sent to a domestic waste sanitary landfill for safe landfilling. According to HJ / T300-2007 "Solid waste leaching toxic leaching method acetic acid buffer solution method" leaching toxic leaching method test heavy metal Pb, Cd exceeds the concentration limit of heavy metal leach solution required by GB16889-2008 "Pollution Control Standards for Domestic Garbage Landfill Sites" (see Table 2).

[0051] According to the method test of the present invention, process and stabilize this incineration fly ash, its steps are as follows:

[0052] According to the type of toxic leaching heavy metal contained in the original sample of fly ash and the toxic concentration belong to low pollution and empirical judgment, a test heavy metal stabilizer formula sample composed of the following components and weight percentages is prepared: phosphate (calcium magnesium phosphate ferti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a heavy metal stabilizer for treating waste incineration fly ash and a method for using the same. Composition of alkaline substances and silicate minerals and / or adsorbents. The use method includes: fully stirring and mixing phosphate, inorganic alkaline substances, silicate minerals and / or adsorbents in proportion, and then adding waste incineration fly ash for maintenance. The invention does not contain any organic chelating agent such as dithiocarbamate or sulfide, has no secondary pollution and pollution-free; the method of use is simple, the cost is low, and it meets the benefits of energy saving and carbon reduction, economic benefits, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of heavy metal stabilizers, in particular to a heavy metal stabilizer for treating waste incineration fly ash and a use method thereof. Background technique [0002] Domestic waste incineration fly ash is mostly processed by chelation solidification, mainly using organic chelating agents and supplemented by inorganic curing agents such as cement. It is a processing method in which cement and organic chelating agent solution are mixed with fly ash, stirred, bonded and solidified into hard blocks. [0003] Commonly used heavy metal stabilization agents can be divided into inorganic agents and organic agents. Organic agents mainly use polymers as chelating agents, mainly including pyrrolidine series, imine series, thiourea, carbamate series and dithiocarbamic acid. Salt system, etc., the principle of action is to contain heavy metals in the molecule to generate insoluble reactants, so as to achieve the purpose of stabil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
05 Jan 2018
Publication
CN107537129A
IPC
A62D3/33; A62D101/08
Inventors
李杰; ηŸ³ηΏ°ε‹‹