Cation montmorillonite sludge dehydrant as well as preparation method and application thereof
A sludge dehydrating agent, montmorillonite-type technology, applied in the direction of dehydration/drying/concentration sludge treatment, oxidation treatment sludge, etc., can solve the limitation of Fenton reaction sludge dehydration, sludge weight gain and reduce sludge heat Value, impact on sludge resource utilization and other issues, to achieve good application value and promotion potential, good variety of properties, huge specific surface area effect
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[0032] Example 1: Preparation of dehydrating agent
[0033] (1) Mix 100 parts by weight of montmorillonite, 600 parts by weight of deionized water, 1.5 parts by weight of CTAB, and 100 parts by weight of absolute ethanol first at room temperature, stir at 60°C for 24h with a constant temperature magnetic stirrer, and then cool to room temperature.
[0034] (2) the mixed solution is placed under a centrifuge at 8000 rpm / min and centrifuged for 5 minutes, and the solid material after the centrifugation is repeatedly washed with deionized water until there is no bromine ion in the eluate (with AgNO 3 Titrate the eluate until no white precipitate is formed).
[0035] (3) The remaining solid material is then dried in a vacuum drying oven at 110°C for 12 hours. After the material is cooled, it is ground through a 200-mesh sieve, and the powder material is stored for later use. The prepared material is named MMT-CTAB 0.5 .
Example Embodiment
[0036] Example 2: Preparation of dehydrating agent
[0037] (1) Mix 100 parts by weight of montmorillonite, 600 parts by weight of deionized water, 3 parts by weight of CTAB, and 100 parts by weight of absolute ethanol first at room temperature, stir at 60°C for 24h with a constant temperature magnetic stirrer, and then cool to room temperature.
[0038] (2) the mixed solution is placed under a centrifuge at 8000 rpm / min and centrifuged for 5 minutes, and the solid material after the centrifugation is repeatedly washed with deionized water until there is no bromine ion in the eluate (with AgNO 3 Titrate the eluate until no white precipitate is formed).
[0039] (3) The remaining solid material was then dried in a vacuum drying oven at 110°C for 12 hours. After the material was cooled, it was ground through a 200-mesh sieve, and the powder material was stored for later use. The prepared material was named MMT-CTAB 1 .
Example Embodiment
[0040] Example 3: Preparation of dehydrating agent
[0041] (1) 100 parts by weight of montmorillonite, 600 parts by weight of deionized water, 6 parts by weight of CTAB, and 100 parts by weight of dehydrated ethanol were mixed uniformly at room temperature, stirred at 60° C. for 24 hours with a constant temperature magnetic stirrer, and then cooled to room temperature.
[0042] (2) the mixed solution is placed under a centrifuge at 8000 rpm / min and centrifuged for 5 minutes, and the solid material after the centrifugation is repeatedly washed with deionized water until there is no bromine ion in the eluate (with AgNO 3 Titrate the eluate until no white precipitate is formed).
[0043] (3) The remaining solid material was then dried in a vacuum drying oven at 110°C for 12 hours. After the material was cooled, it was ground through a 200-mesh sieve, and the powder material was stored for later use. The prepared material was named MMT-CTAB 2 .
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