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Modified bentonite and preparation process thereof

A bentonite and modified technology, which is applied in the field of modified bentonite and its preparation technology, can solve the problems that cannot be fully utilized, cannot have adsorption and sterilization at the same time, achieve convenient transportation and use, good adsorption and water purification, and reduce COD value effect

Inactive Publication Date: 2019-04-05
嘉兴沃特泰科环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very suitable for the treatment of industrial wastewater. At the same time, as an adsorption medium, bentonite has abundant reserves, low price, simple preparation method, good treatment effect, non-toxic, tasteless, harmless to the environment, and can remove heavy metals while treating dyes in water. ions, etc., but unmodified bentonite only has a certain adsorption effect, but cannot make full use of its performance, and it cannot have both adsorption and bactericidal effects

Method used

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  • Modified bentonite and preparation process thereof
  • Modified bentonite and preparation process thereof

Examples

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Embodiment 1

[0038] Embodiment 1: A kind of modified bentonite, each component and its corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0039] Step 1, the purification of bentonite: add some water to the bentonite to fully soak and stir, after static settlement, take out the upper suspension, discard the sediment, dry the washed bentonite, and grind it for later use;

[0040] Step 2, sodium bentonite: take part of the water to dissolve sodium carbonate to obtain a sodium carbonate solution, put the selected bentonite obtained in step 1 into the sodium carbonate solution for prehydration treatment, the treatment temperature is controlled at 25 °C, and the treatment time is For 24h, the bentonite after filtering and sodiumizing is dried and ground for later use;

[0041] Step 3, bentonite modification: Take part of the water to dissolve polyethylene glycol and heat it, and the heating temperature is controlled at 50°C to obtain a polyethylen...

Embodiment 2-10

[0044] Example 2-10: a modified bentonite, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0045] Each component and parts by weight thereof in table 1 embodiment 1-10

[0046]

Embodiment 11

[0047] Embodiment 11: a modified bentonite, the difference from embodiment 1 is that tartaric acid is used as the organic acid.

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Abstract

The invention discloses modified bentonite and a preparation process thereof, which relates to the technical field of sewage treatment, and solves the technical problem that bentonite cannot simultaneously have the absorption and sterilization functions. According to technical key points, the modified concrete comprises the following components in parts by weight: 8 to 10 parts of bentonite; 0.3 to 0.5 part of sodium carbonate; 0.8 to 1 part of polyglutamic acid; 0.8 to 2 parts of polyethylene glycol; 0.13 to 3 parts of aluminum chloride; and 20 to 30 parts of water. The modified bentonite prepared in the method of the invention is large in specific surface area, high in porosity, high in absorption capacity and capable of sterilizing and purifying water.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, more specifically, it relates to a modified bentonite and a preparation process thereof. Background technique [0002] With the development of industries such as papermaking and printing and dyeing, the continuous discharge of industrial wastewater has made environmental pollution increasingly serious. Industrial wastewater has the characteristics of deep color, high COD value, complex and changeable composition, and wide distribution. [0003] Bentonite, as a kind of clay mainly composed of montmorillonite, produces permanent negative charges because of the easy substitution of unequal cations between layers, and montmorillonite has a large internal and external surface area, which makes it have a high ion density. Exchange capacity and strong adsorption capacity. Therefore, it is very suitable for the treatment of industrial wastewater. At the same time, as an adsorption medium, bent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/50
CPCC02F1/281C02F1/288C02F1/50
Inventor 钟奇军陈谦周卫华王小东
Owner 嘉兴沃特泰科环保科技股份有限公司