Novel APG curing agent for Pb < 2 + > pollution treatment and preparation method thereof
A curing agent and a new type of technology, used in adsorption water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. Difficult to use polymers and other problems, to achieve the effect of increased strength
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Embodiment 1
[0034] This example is for Pb 2+ A novel APG curing agent for pollution treatment, characterized in that the components of the APG curing agent include a phosphate activator solution and fly ash powder, and the amounts of the phosphate activator solution and the fly ash powder are used The ratio is 0.3 to 0.4.
[0035] In this embodiment, the phosphate activator solution is an aluminum dihydrogen phosphate solution, and the concentration of the aluminum dihydrogen phosphate solution is 35%; the fly ash powder low-calcium fly ash, the fly ash The particle size of the powder is 1250 mesh.
[0036] Preferably, the dosage ratio of the phosphate activator solution and the fly ash powder is 0.317.
Embodiment 2
[0038] For Pb in Example 1 2+ The preparation method of the novel APG curing agent for pollution treatment comprises the following steps:
[0039] The fly ash powder with a particle size of 1250 mesh and the aluminum dihydrogen phosphate solution with a concentration of 35% are mixed and stirred evenly, and the stirring time is 60s to prepare a phosphoric acid base polymer curing agent slurry, that is, APG curing agent; The dosage ratio of the phosphate activator solution and the fly ash powder is 0.317;
[0040] The heavy metal Pb (NO 3 ) 2 Dissolved in distilled water to obtain Pb-containing 2+ of polluted water, the Pb-containing 2+ of Pb in contaminated water 2+ The content of Pb is 0%, 0.4% and 1.0% respectively, and then added to the prepared phosphoric acid base polymer curing agent slurry, uniformly stirred for 1 min to obtain a slurry; the Pb-containing 2+ The dosage ratio of the polluted water and the fly ash powder is 0.064; the obtained slurry is poured into ...
Embodiment 3
[0051] For Pb in Example 1 2+ The preparation method of the novel APG curing agent for pollution treatment comprises the following steps:
[0052] The fly ash powder with a particle size of 1250 mesh and the aluminum dihydrogen phosphate solution with a concentration of 35% are mixed and stirred evenly, and the stirring time is 90s to prepare a phosphoric acid base polymer curing agent slurry, that is, APG curing agent; The dosage ratio of the phosphate activator solution and the fly ash powder is 0.4;
[0053] The APG curing agent for Pb 2+ The use method of pollution treatment is: the Pb 2+ The pollutants are dissolved in distilled water to obtain Pb-containing 2+ of contaminated water, and then the Pb-containing 2+ The polluted water was added to the prepared phosphoric acid base polymer curing agent slurry, and stirred uniformly for 2 minutes to obtain a slurry; the slurry was poured into a size of 20 × 20 × 20 m 3 d mold (see figure 1 ) in and after the maintenance,...
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