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Preparation method of composite modified kieselguhr flocculant

A composite flocculant, diatomite technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sewage treatment, etc. Effective content, treatment of secondary pollution of water bodies, etc., to achieve the effect of reducing the concentration of free metal ions, low cost, and high cost performance

Inactive Publication Date: 2018-10-16
ANHUI LEJIN ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the formula can be adjusted and replaced in various ways, the effective effect of the aluminum and iron chemical elements in the diatomite is not fully utilized, the physical and chemical properties of the diatomite itself are not fully emphasized, and the aluminum, iron, The effective content of silicon, and the flocculant is easy to produce a large number of free metal ions in water, which produces secondary pollution to the treated water

Method used

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  • Preparation method of composite modified kieselguhr flocculant

Examples

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Embodiment 1

[0019] A modified diatomite composite flocculant, made of the following parts by weight: 120 parts by weight of diatomite, 12 parts by weight of chitosan, 12 parts by weight of 2,3-epoxypropyltrimethylammonium chloride Parts, 3 parts by weight of dimethyl azobisisobutyrate, 40 parts by weight of magnesium aluminum silicate (the content of aluminum oxide is 35.6%), 30 parts by weight of silicon tetrachloride waste liquid (55.27wt%), ethylene glycol 450 parts by weight of diglycidyl ether.

[0020] The preparation method of the modified diatomite composite flocculant comprises the following steps:

[0021] (1) Modification treatment of diatomite: Calcinate diatomite at 350°C for 3 hours, then add hydrochloric acid solution for ultrasonic treatment for 25 minutes, and then wash with ionized water until the pH is 6.3 to obtain modified diatomite;

[0022] Mix modified diatomaceous earth, 2,3-epoxypropyltrimethylammonium chloride, chitosan and dimethyl azobisisobutyrate in ethanol...

Embodiment 2

[0026] A modified diatomite composite flocculant, made of the following parts by weight: 100 parts by weight of diatomite, 10 parts by weight of chitosan, 5 parts by weight of 2,3-epoxypropyltrimethylammonium chloride Parts, 5 parts by weight of azoisobutylcyanoformamide, 25 parts by weight of magnesium aluminum silicate (the content of aluminum oxide is 35.6%), 35 parts by weight of silicon tetrachloride waste liquid (55.27wt%), ethylene glycol di 50 parts by weight of glycidyl ether.

[0027] The preparation method of the modified diatomite composite flocculant comprises the following steps:

[0028] (1) Modification treatment of diatomite: Calcinate diatomite at 400°C for 2 hours, then add hydrochloric acid solution for ultrasonic treatment for 20 minutes, and then wash with ionized water until the pH is 6.2 to obtain modified diatomite;

[0029] Mix modified diatomaceous earth, 2,3-epoxypropyltrimethylammonium chloride, chitosan and azoisobutylcyanoformamide in ethanol, a...

Embodiment 3

[0033] A modified diatomite composite flocculant, made of the following parts by weight: 150 parts by weight of diatomite, 15 parts by weight of chitosan, 15 parts by weight of 2,3-epoxypropyltrimethylammonium chloride 1 part by weight, 1 part by weight of sodium diisobutylimidazoline hydrochloride, 30 parts by weight of magnesium aluminum silicate (the content of aluminum oxide is 35.6%), 25 parts by weight of silicon tetrachloride waste (55.27wt%) liquid, ethylene glycol di 40 parts by weight of glycidyl ether.

[0034] The preparation method of the modified diatomite composite flocculant comprises the following steps:

[0035] (1) Modification treatment of diatomite: Calcinate diatomite at 350°C for 3 hours, then add hydrochloric acid solution for ultrasonic treatment for 30 minutes, and then wash with ionized water until the pH is 6.5 to obtain modified diatomite;

[0036]Mix modified diatomaceous earth, 2,3-epoxypropyltrimethylammonium chloride, chitosan and azodiisobuty...

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Abstract

The invention relates to the technical field of flocculants, in particular to a preparation method of a composite modified kieselguhr flocculant. The preparation method comprises the following steps:performing calcining, activating treatment and intercalation treatment on kieselguhr to form intercalated modified kieselguhr, compounding aluminum-magnesium silicate and silicon tetrachloride to forma composite system A, adding the intercalated modified kieselguhr into the composite system A, and performing granulation to form the composite flocculant. The composite modified kieselguhr flocculant has good flocculation and turbidity removal effects, can achieve reutilization of industrial pollutants, and is safe, environment-friendly and high in economic benefit.

Description

technical field [0001] The invention relates to the technical field of flocculants, in particular to a preparation method of a modified diatomite composite flocculant. Background technique [0002] In recent years, with rapid economic development and rapid industrial development, water pollution has become increasingly serious; and water is a basic need for human survival. The safety and security of drinking water has already attracted great attention from the country. On July 1, 2007, the newly revised "Drinking Water Hygienic Standards" (GB 5749-2006) greatly increased the drinking water indicators from the original 35 to 106, and the limits of some indicators were also stricter. In addition, on June 25, 2008, the state issued 11 new and more stringent industry emission standards including pulp and paper, electroplating, and fermentation. This has important practical significance for ensuring people's drinking water health and improving people's quality of life. Among t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54
CPCC02F1/5236C02F1/5263C02F1/54
Inventor 郭常青吴学军
Owner ANHUI LEJIN ENVIRONMENT TECH CO LTD
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