A kind of water purification material and preparation method thereof

A technology for water purification and composite materials, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. Improve repair efficiency, improve easy agglomeration, and reduce repair costs

Active Publication Date: 2018-08-24
山西国科益环科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the natural or synthetic modified materials used to repair water pollution mainly include activated carbon, zeolite, attapulgite, zero-valent iron, alloy materials, etc. However, when these functional materials are used alone, they can only repair specific or a few Several pollutants, resulting in some toxic substances remaining in the repaired water body, causing great hidden dangers to human health
Therefore, when people remediate water pollution, they often have to add different remediation materials at the same time. Although this can obtain a more ideal water quality, it not only makes the process of water remediation more cumbersome, but also increases investment, which is not conducive to the development of the water remediation industry. Further development

Method used

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  • A kind of water purification material and preparation method thereof
  • A kind of water purification material and preparation method thereof
  • A kind of water purification material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the preparation of water purification material

[0026] Raw material composition ratio: 60% of composite material, 20% of attapulgite, 10% of activated carbon with a particle size of 80 mesh, 4% of expanded graphite with an expansion rate of 330ml / g, and 6% of calcium carbonate;

[0027] The composite material is prepared by the following method: uniformly mix wood chips or sawdust with iron oxide at a mass ratio of 1:1.5, put them into a sealed crucible, then place the crucible in a muffle furnace, and adjust the temperature to 1000°C for dry distillation 8h, take it out and set aside.

[0028] The preparation method of water purification material comprises the following steps:

[0029] 1) Mix the composite material with attapulgite, activated carbon, expanded graphite and calcium carbonate according to the above ratio;

[0030] 2) Prepare a carboxymethyl cellulose solution with a concentration of 15%, slowly add it to the mixture prepared in step 1) un...

Embodiment 2

[0032] Embodiment 2: water body purification material is to Pb 2+ 、As 5+ 、Cr 6+ The removal experiment

[0033] The novel water purification material prepared by the present invention is carried out Pb 2+ 、As 5+ 、Cr 6+ removal rate test. Take 4.0g of the material and add it to 100ml of weakly acidic heavy metal polluted wastewater simulating that the above heavy metal is 50mg / L, divide it into three groups of parallel experiments, put it into a constant temperature oscillation box at 35°C for reaction, and take samples for measurement at regular intervals The heavy metal concentration in the water body is obtained to obtain the heavy metal removal curve of the material. From figure 2 It can be seen that the material prepared by the present invention has a good removal effect on various heavy metals, and the reaction is rapid, and a removal rate of more than 90% can be achieved within 30 minutes.

Embodiment 3

[0034] Embodiment 3: water body purification material is to NH 3 -N, COD removal experiment

[0035] The novel water purification material prepared by the present invention is carried out NH 3 -N, COD removal rate test. Take 4.0g of the material and add it to 100ml of domestic polluted wastewater, take 30% sodium hydroxide solution and 10% sulfuric acid solution to adjust the pH, divide it into three groups of parallel experiments, and put it into a constant temperature shaking box at 35°C for reaction , take samples at regular intervals to measure NH in water 3 -N, COD value, get the NH of the material 3 -N, COD removal curve. From image 3 It can be seen that: the material prepared by the present invention has 3 Both -N and COD have good removal effects, and the removal rate of more than 70% can be achieved within 30 minutes.

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Abstract

The invention relates to the field of preparation and application of water purifying materials, in particular to a preparation method of a novel repairing material for purifying water. The preparation method is characterized in that after wood flour or saw dust is uniformly mixed with excessive ferric oxide, the mixture is subjected to anaerobic dry distillation in a muffle furnace so that a layer of zero-valent iron is formed on a charcoal surface in a reducing manner to form a micro primary battery, the micro primary battery is mixed with attapulgite, activated carbon, expanded graphite and calcium carbonate according to a certain proportion, then the mixture is extruded and formed under the effect of carboxymethylcellulose to obtain the novel repairing material for purifying water, and the novel repairing material for purifying water has good effect of removing pollution of Pb2+, As5+, Cr6+, COD, ammonia nitrogen, dyestuff and the like. Functions of different repairing materials can be combined, the problem that the function is excessively simple when the repairing material is used independently is solved, meanwhile, the repairing cost is reduced, the repairing efficiency is improved, and the application potential of the repairing material in the aspect of treatment of water pollution is expanded.

Description

technical field [0001] The invention relates to a water body purification material, in particular to a water body purification material and a preparation method thereof. Background technique [0002] With the development of modern industrialization, water pollution caused by pollutant discharge has attracted increasing attention, especially ammonia nitrogen, printing and dyeing, and heavy metal pollution. In my country, where the per capita water resources are lower than the world average, the degree of pollution is closely affected. Therefore, the treatment of water pollution, especially ammonia nitrogen, printing and dyeing, and heavy metal wastewater, needs to be solved urgently. [0003] At present, the natural or synthetic modified materials used to repair water pollution mainly include activated carbon, zeolite, attapulgite, zero-valent iron, alloy materials, etc. However, when these functional materials are used alone, they can only repair specific or a few Several ki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461
CPCC02F1/461
Inventor 杨永刚秦作栋
Owner 山西国科益环科技有限公司
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