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Composite flocculant as well as preparation method and application thereof

A composite flocculant and compound technology, which is used in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sewage treatment, etc. The product has problems such as toxicity, to achieve good oxidation coagulation performance, improve water cycle cycle, and improve water quality.

Inactive Publication Date: 2018-10-16
NINGBO FEICHAI ROBOT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic salt flocculants have great disadvantages: the aluminum ions remaining in the water will cause secondary pollution, the iron ions themselves have color, and have a certain corrosion effect on equipment, and the dosage is large, and the treatment effect is not ideal
Although the organic polymer flocculant has fast flocculation speed, less dosage, strong pertinence, and wide application range, it also has disadvantages such as high cost, flocculant monomer or its hydrolysis, and toxic degradation products.
[0003] With the increasing environmental pollution, there are more and more different types of pollution particles in sewage or sludge, such as organic solid particles are negatively charged, inorganic solid particles are positively charged, and mixed solid particles are electrically neutral, so Ordinary single flocculants are difficult to achieve good water purification effect. It can be seen that the current use of inorganic salt flocculants and organic polymer flocculants has certain limitations. Therefore, the development of non-toxic, harmless, high-efficiency, low-cost The cost of flocculant is the research direction at home and abroad

Method used

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  • Composite flocculant as well as preparation method and application thereof
  • Composite flocculant as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation of embodiment 1 composite flocculant

[0029] Raw material composition: 30 parts of sodium alginate, 20 parts of acrylamide, 10 parts of graphene oxide-polyaluminum chloride zinc complex, 5 parts of sodium lauryl sulfate, 1 part of potassium permanganate, 0.1 part of lemon oil, 0.1 part of ammonium cerium nitrate, 40 parts of deionized water;

[0030] Preparation of Graphene Oxide-Polyaluminum Zinc Chloride Composite:

[0031] Step 1, the preparation of polyaluminium-zinc chloride: AlCl 3 ·6H 2 O and ZnCl 2 Prepared as 3.5mol / L AlCl 3 solution and 0.2mol / L ZnCl 2 Solution, mixed, slowly dropwise added 2mol / L NaOH solution on a magnetic heating stirrer, stirred for 30min, and dried at 40°C to obtain;

[0032] Step 2, preparation of graphene oxide: prepared by improved Hummers method;

[0033] Step 3. Preparation of graphene oxide-polyaluminum zinc chloride composite: Weigh the graphene oxide prepared in step 2 in proportion, add deionized water, an...

Embodiment 2

[0037] The preparation of embodiment 2 composite flocculants

[0038] Raw material composition: 60 parts of sodium alginate, 30 parts of acrylamide, 20 parts of graphene oxide-polyaluminum chloride zinc complex, 10 parts of sodium stearate, 5 parts of potassium permanganate, 1 part of clove oil, peppermint oil 2 parts, 1 part of ammonium cerium nitrate, 70 parts of deionized water;

[0039] Preparation of Graphene Oxide-Polyaluminum Zinc Chloride Composite:

[0040] Step 1, the preparation of polyaluminium-zinc chloride: AlCl 3 ·6H 2 O and ZnCl 2 Prepared as 3.5mol / L AlCl 3 solution and 1mol / L ZnCl 2 Solution, mixed, slowly dropwise added 2mol / L NaOH solution on a magnetic heating stirrer, stirred for 120min, and dried at 60°C to obtain;

[0041] Step 2, preparation of graphene oxide: prepared by improved Hummers method;

[0042]Step 3. Preparation of graphene oxide-polyaluminum zinc compound: Weigh the graphene oxide prepared in step 2 in proportion, add deionized wate...

Embodiment 3

[0046] The preparation of embodiment 3 composite flocculants

[0047] Raw material composition: 45 parts of sodium alginate, 25 parts of acrylamide, 35 parts of graphene oxide-polyaluminum chloride zinc complex, 7 parts of gum arabic, 3 parts of potassium permanganate, 2 parts of thyme oil, 0.5 parts of ammonium cerium nitrate part, 55 parts of deionized water;

[0048] Preparation of Graphene Oxide-Polyaluminum Zinc Chloride Composite:

[0049] Step 1, the preparation of polyaluminium-zinc chloride: AlCl 3 ·6H 2 O and ZnCl 2 Prepared as 3.5mol / L AlCl 3 solution and 0.5mol / L ZnCl 2 Solution, mixed, slowly dropwise added 2mol / L NaOH solution on a magnetic heating stirrer, stirred for 90min, and dried at 50°C to obtain;

[0050] Step 2, preparation of graphene oxide: prepared by improved Hummers method;

[0051] Step 3. Preparation of graphene oxide-polyaluminum zinc chloride composite: Weigh the graphene oxide prepared in step 2 in proportion, add deionized water, and di...

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Abstract

The invention provides a composite flocculant as well as a preparation and application thereof. The composite flocculant is prepared from the following raw materials in parts by weight: 30-60 parts ofsodium alginate, 20-30 parts of acrylamide, 10-20 parts of graphene oxide-poly aluminum zinc chloride compound, 5-10 parts of emulsifier, 1-5 parts of potassium permanganate, 0.1-3 parts of plant essential oil, 0.1-1 part of ceric ammonium nitrate and 40-70 parts of deionized water. The flocculant prepared by the preparation method provided by the invention has the advantages of lower cost, highefficiency and sterilization function and can remarkably improve the water quality in places suffering from serious organic pollutant pollution.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a composite flocculant. Background technique [0002] Water is the origin of life and the substance on which human beings and living things depend. At present, the problem of water pollution in the world is becoming more and more serious, and the problem of water treatment is also becoming more and more serious. In order to solve the problem of water pollution, the flocculant precipitation method has been widely used as a low-cost water treatment method. The use of flocculants for water treatment can reduce the sensory indicators such as turbidity and chromaticity of raw water, and remove various high-molecular organic substances, heavy metals and radioactive substances. The flocculants currently used in wastewater treatment are usually single flocculants, such as inorganic salt flocculants, organic polymer flocculants, etc. Inorganic salt flocculants have great disadv...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/54
CPCC02F1/5236C02F1/5263C02F1/54
Inventor 李梅
Owner NINGBO FEICHAI ROBOT TECH CO LTD