Preparation method and application of sediment endogenous phosphorus load control bottom sediment modified material
A technology of load control and modified materials, which is applied in the fields of temperature control sludge treatment, chemical instruments and methods, sludge treatment, etc. The effect of adsorption capacity
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Embodiment 1
[0041] The endogenous phosphorus load control sediment modification material described in this example is prepared by the following method:
[0042] (1) Collect lake bottom mud as raw material, freeze-dry, grind and sieve to obtain sediment powder with particle size not less than 100 mesh, and set aside;
[0043] (2) Get zeolite, grind and sieve to obtain zeolite powder with particle size not less than 100 mesh, and set aside;
[0044] (3) Mix the sediment powder with the zeolite powder and polyaluminum chloride uniformly to form a mixed powder, the quality of the zeolite powder is 30% of the total mass of the mixed powder, and the polymer The quality of aluminum chloride is 8% of described mixed powder gross mass, standby;
[0045] (4) The mixed powder is soaked with water, the amount of water added accounts for 10wt% of the mixed powder mass, and then extruded into granules, and the molding material is roasted at 400 ° C for 3 hours to obtain a particle size of 3- 5mm of s...
Embodiment 2
[0047] The endogenous phosphorus load control sediment modification material described in this example is prepared by the following method:
[0048] (1) Collect lake bottom mud as raw material, freeze-dry, grind and sieve to obtain sediment powder with a particle size of 100 to 200 mesh, and set aside;
[0049] (2) Get the zeolite, grind and sieve to obtain a zeolite powder with a particle size of 100 to 200 meshes, and set aside;
[0050] (3) Mix the sediment powder with the zeolite powder and polyaluminum chloride uniformly to form a mixed powder, the quality of the zeolite powder is 50% of the total mass of the mixed powder, and the polymer The quality of aluminum chloride is 1% of the total mass of the mixed powder, for subsequent use;
[0051] (4) The mixed powder is soaked with water, the amount of water added accounts for 10wt% of the mixed powder mass, and then extruded into granules, and the molding material is roasted at 700 ° C for 2 hours to obtain a particle size...
Embodiment 3
[0053] The endogenous phosphorus load control sediment modification material described in this example is prepared by the following method:
[0054] (1) Collect lake bottom mud as raw material, freeze-dry, grind and sieve to obtain sediment powder with a particle size of 150-200 mesh, and set aside;
[0055] (2) Get the zeolite, grind and sieve to obtain a zeolite powder with a particle size of 150 to 200 meshes, and set aside;
[0056] (3) Mix the sediment powder with the zeolite powder and polyaluminum chloride uniformly to form a mixed powder, the quality of the zeolite powder is 40% of the total mass of the mixed powder, and the polymer The quality of aluminum chloride is 9% of described mixed powder gross mass, standby;
[0057] (4) The mixed powder is soaked with water, the amount of water added accounts for 10wt% of the mixed powder mass, and then extruded into granules, and the molding material is calcined at 600°C for 2h to obtain a particle size of 4- 5mm sediment ...
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