Method for treating burning flyash using chelant
A technology of using chelating agent and incineration fly ash, which is applied in the field of chelating agent, polymer compound, and using chelating agent to treat incineration fly ash. It can solve the problems that the pollution crisis cannot be eliminated, achieve good stabilization effect, avoid dissolution, and use less Effect
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example 1
[0029] Add water 28g and this chelating agent 2g to 100g incineration fly ash (lead content 2500mg / kg, cadmium content 120mg / kg, chromium content 150mg / kg, copper content 626mg / kg), stir 10 minutes. After that, it was soaked in the solution (pH4.93) for 6 hours, and then left at room temperature for 10 hours, and then the dissolution test was carried out. Test results (dissolution): less than 0.05 mg / L of lead, less than 0.05 mg / L of cadmium, less than 0.05 mg / L of chromium, and less than 0.05 mg / L of copper.
example 2
[0031] Add water 29g, cement 20g and this chelating agent 1g to 100g incineration fly ash (lead content 2500mg / kg, cadmium content 120mg / kg, chromium content 150mg / kg, copper content 626mg / kg), stir 10 minutes. After that, it was soaked in the solution (pH4.93) for 6 hours, and then left at room temperature for 10 hours, and then the dissolution test was carried out. Test results (dissolution): less than 0.05 mg / L of lead, less than 0.05 mg / L of cadmium, less than 0.05 mg / L of chromium, and less than 0.05 mg / L of copper.
example 3
[0033] 30 g of water was added to 100 g of incineration fly ash (lead content 2500 mg / kg, cadmium content 120 mg / kg, chromium content 150 mg / kg, copper content 626 mg / kg) and stirred for 10 minutes. After that, it was soaked in the solution (pH4.93) for 6 hours, and then left at room temperature for 10 hours, and then the dissolution test was carried out. Test result: Lead dissolution rate is 14.4mg / L.
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