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A preparation method based on rectorite-loaded spherical nano-calcium salt oxidant

A rectorite and spherical technology is applied in the field of preparation based on rectorite-loaded spherical nano calcium salt oxidant, which can solve the problems of inability to remove moisture and small removal effect, and achieve easy operation, strong adsorption, and good dispersibility. and migratory effects

Active Publication Date: 2021-06-22
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the application of external force, the sludge particles accumulate, and the drainage channel of the sludge, that is, the gap between the particles, gradually decreases under the action of external force, resulting in more water being locked in the sludge and cannot be removed.
And mechanical dehydration has little effect on the removal of intracellular water

Method used

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  • A preparation method based on rectorite-loaded spherical nano-calcium salt oxidant
  • A preparation method based on rectorite-loaded spherical nano-calcium salt oxidant
  • A preparation method based on rectorite-loaded spherical nano-calcium salt oxidant

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Embodiment 1

[0035] A preparation method based on rectorite loaded spherical nano calcium peroxide, comprising the following steps:

[0036] (1) Pretreatment of rectorite: at room temperature, take 5 g of rectorite, add distilled water at a solid-to-liquid ratio of 1:10, and stir for 20 minutes with a magnetic stirrer under ultrasonic conditions to prepare rectorite suspension liquid; the obtained rectorite suspension was left to age for 12 h, then centrifuged and washed with absolute ethanol and deionized water, and the obtained solid was dried at 105°C for 24 h, ground to 70 μm, and set aside.

[0037] (2), preparation of spherical nano calcium peroxide:

[0038] A. Weigh 3 g of calcium salt, add distilled water according to the solid-to-liquid ratio of 1:10, add 15 g of PEG 1000 and ammonia water with a mass fraction of 25%, and mechanically stir at 300 r / min for 1 h under ultrasonic conditions to mix The substances are thoroughly mixed;

[0039] B, the hydrogen peroxide that mass fra...

Embodiment 2

[0043] A preparation method based on rectorite loaded spherical nano-calcium hydroxide, comprising the following steps:

[0044] (1) Pretreatment of rectorite: at room temperature, take 7 g of rectorite, add distilled water at a solid-to-liquid ratio of 1:12, and stir for 30 minutes with a magnetic stirrer under ultrasonic conditions to prepare rectorite suspension liquid; the obtained rectorite suspension was left to age for 18 h, then centrifuged and washed with absolute ethanol and deionized water, and the obtained solid was dried at 105°C for 24 h, ground to 80 μm, and set aside.

[0045] (2) Preparation of spherical nano calcium hydroxide

[0046] A. Weigh 5 g of calcium salt, add distilled water according to the solid-to-liquid ratio of 1:10, add 25 g of PEG 1000 and ammonia water with a mass fraction of 25%, and mechanically stir at 500 r / min for 1.5 h under ultrasonic conditions to mix The substances are thoroughly mixed;

[0047] B. Use sodium hydroxide solution to ad...

Embodiment 3

[0050] A preparation method based on rectorite loaded spherical nano-calcium salt oxidant, comprising the following steps:

[0051] (1) Pretreatment of rectorite: at room temperature, take 7 g of rectorite, add distilled water at a solid-to-liquid ratio of 1:12, and stir for 30 minutes with a magnetic stirrer under ultrasonic conditions to prepare rectorite suspension liquid; the obtained rectorite suspension was left to age for 18 h, then centrifuged and washed with absolute ethanol and deionized water, and the obtained solid was dried at 105°C for 24 h, ground to 80 μm, and set aside.

[0052] (2) Preparation of spherical nano calcium hydroxide

[0053] A. Weigh 5 g of calcium salt, add distilled water according to the solid-to-liquid ratio of 1:10, add 25 g of PEG·1000 and ammonia water with a mass fraction of 25%, and perform mechanical stirring at 500 r / min for 1.5 h under ultrasonic conditions to mix The substances are thoroughly mixed;

[0054] B. Use sodium hydroxide...

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Abstract

A preparation method based on rectorite-loaded spherical nano-calcium salt oxidant, comprising the following steps: (1), pretreatment of rectorite; (2), using different methods to prepare different load substances; (3), pretreatment The subsequent polymerization of the rectorite and the loaded substance yields a polymeric material based on rectorite, that is, a spherical nano-calcium salt oxidant. The rectorite raw material of the present invention is rich in sources, cheap and easy to obtain; the process flow is simple and easy to operate. The skeleton structure of rectorite and spherical nano-calcium peroxide or spherical nano-calcium hydroxide produces a large number of large-aperture columnar three-dimensional structures. During the deep dehydration of municipal sludge, these channels can be used as sludge dehydration channels, improving the quality of municipal sludge. Mud dehydration performance.

Description

technical field [0001] The invention belongs to the technical field of synthesis of loaded nanomaterials, and in particular relates to a preparation method based on rectorite-loaded spherical nano-calcium salt oxidizers. The rectorite-loaded spherical nano-calcium salt oxidants can be used for deep dehydration of municipal sludge. Background technique [0002] With the rapid development of my country's economy and the continuous improvement of the level of urbanization, the generation of urban sludge has increased year by year. As a substance between solid and liquid, sludge is mainly characterized by high water content (up to 99%). Excessive water content causes the sludge to be bulky, occupies a large area, and has practical problems such as high transportation costs. At present, the dehydration technology commonly used in urban sewage treatment plants is mechanical dehydration, through the action of mechanical pressure, the extracellular water of sludge is released. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30B01J23/745C02F11/06C02F11/143
CPCB01J20/041B01J20/10B01J23/745B01J2220/42B01J2220/4806C02F11/06C02F11/12
Inventor 李亚林刘蕾杨磊窦雪林康
Owner HENAN INST OF ENG
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