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Heavy metal sewage treatment method based on magnetic ferroferric oxide nano-particles

A sewage treatment method, the technology of ferroferric oxide, which is applied in water/sewage treatment, special compound water treatment, biological water/sewage treatment, etc., can solve the problems of poor selectivity and poor adsorption effect of heavy metal ions, and achieve Good adsorption effect, low cost of raw materials, simple treatment process

Inactive Publication Date: 2018-08-24
SUZHOU JONATHAN NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, many magnetic composite particles have poor adsorption effect on heavy metal ions and low selectivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for treating heavy metal sewage based on magnetic iron ferric oxide nanoparticles, said method comprising the following steps:

[0022] Step 1. Add 0.5 parts by mass of dibutylammonium dithiophosphate to 300 parts by mass of heavy metal sewage, stir at room temperature for 10min, and then let stand;

[0023] Step 2. After standing, the flocs sink to form a clear liquid and then filter, then add 10 parts by mass of zeolite to the filtered clear liquid, microwave at room temperature for 20 minutes, and then stand for the second time. The zeolite is NaP1 type zeolite;

[0024] Step 3. Weigh 20 parts by mass of glucose, 4 parts by mass of lecithin, 10 parts by mass of sodium oleate, 15 parts by mass of diatomaceous earth and 40 parts by mass of absolute ethanol, mix them, and then shake at a constant temperature of 20° C. for 1 hour;

[0025] Step 4. Put the clear liquid left still for the second time in the shaking incubator, then take 10 parts by mass of the mix...

Embodiment 2

[0029] A method for treating heavy metal sewage based on magnetic iron ferric oxide nanoparticles, said method comprising the following steps:

[0030] Step 1. Add 1.5 parts by mass of dibutylammonium dithiophosphate to 450 parts by mass of heavy metal sewage, stir at room temperature for 15min, and then let stand;

[0031] Step 2. After standing, the flocs sink to form a clear liquid and then filter, then add 15 parts by mass of zeolite to the filtered clear liquid, microwave at room temperature for 30 minutes, and then stand for the second time. The zeolite is NaP1 type zeolite;

[0032] Step 3. Weigh 30 parts by mass of glucose, 6 parts by mass of lecithin, 15 parts by mass of sodium oleate, 25 parts by mass of diatomaceous earth and 50 parts by mass of absolute ethanol, mix them, and then shake at a constant temperature of 25° C. for 2 hours;

[0033] Step 4. Put the clear liquid left still for the second time in the shaking incubator, then take 15 parts by mass of the mi...

Embodiment 3

[0037] A method for treating heavy metal sewage based on magnetic iron ferric oxide nanoparticles, said method comprising the following steps:

[0038] Step 1. Add 1 mass part of dibutylammonium dithiophosphate to 400 mass parts of heavy metal sewage, stir at room temperature for 13min, then let stand;

[0039] Step 2. After standing, the flocs sink to form a clear liquid and then filter, then add 10 to 15 parts by mass of zeolite to the filtered clear liquid, microwave at room temperature for 20 to 30 minutes, and then stand still for the second time. Described zeolite is NaP1 type zeolite;

[0040] Step 3. Weigh 25 parts by mass of glucose, 5 parts by mass of lecithin, 12 parts by mass of sodium oleate, 22 parts by mass of diatomaceous earth and 45 parts by mass of absolute ethanol, mix them, and then shake at a constant temperature of 25°C for 1.5h;

[0041] Step 4. Put the clear liquid left still for the second time in the shaking incubator, then get 11 parts by mass of the...

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Abstract

The invention discloses a heavy metal sewage treatment method based on magnetic ferroferric oxide nano-particles, and belongs to the technical field of sewage treatment. The method comprises the specific steps that dibutyl ammonium dithiophosphate is added into heavy metal sewage, and standing is performed after stirring is performed; then, after standing is performed, a clear solution is filtered, zeolite is added, microwave oscillation is performed under the room temperature, and secondary standing is performed; glucose, lecithin, sodium oleate, kieselguhr and absolute ethyl alcohol are mixed and oscillated to be uniform; then, after second-time standing is performed, the clear solution is added into the mixed solution, a fluid medium and magnetotactic bacteria are added and oscillated and mixed to be uniform; the oscillated mixed solution is centrifuged and separated, a supernatant is sampled to be filtered, and finally the adsorption process is completed. The method is simple in treatment process, can treat sewage with the low metal ion concentration, and is not high in operation cost and raw material cost, good in heavy metal ion adsorption effect and high in selectivity, andthe removal rate for Cu2+, Pb2+ and Cd2+ can reach up to 99%.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a heavy metal sewage treatment method based on magnetic iron ferric oxide nanoparticles. Background technique [0002] Precious metals are widely used in aerospace, aviation, navigation, metallurgy, building materials, petrochemical and computer technology and other fields. With the continuous increase of industrial consumption, the pollution of precious metals in waste gas to water bodies is becoming more and more serious. Controlling water pollution while restoring its proper value is the resource direction of wastewater treatment containing precious metal ions. At present, the treatment process of this kind of wastewater is too cumbersome and accompanied by secondary pollution, especially when the concentration of metal ions is low, the operating cost and raw material cost are relatively high. [0003] Magnetic Fe 3 o 4 Nanoparticles are an important sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/20
CPCC02F1/001C02F1/281C02F1/38C02F1/542C02F3/348C02F9/00C02F2101/20C02F2305/06
Inventor 吕少波李卓才李苏杨
Owner SUZHOU JONATHAN NEW MATERIALS TECH
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