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A magnetic composite-cyanide decomposing enzyme composite nanoparticle, its preparation method and application, and its method for treating electroplating wastewater

A composite nanoparticle and nanoparticle technology, which is applied in the field of electroplating sewage treatment, can solve the problems of increased treatment cost, single dye, and impact on agricultural production, and achieve good regeneration ability, increased specific surface area, and good magnetic adsorption ability.

Active Publication Date: 2022-05-10
山东普尼奥水处理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When heavy metals enter the human body, they will damage the body due to enrichment, and can cause cancer in serious cases; heavy metal pollution will drastically reduce soil quality, which will have a great impact on agricultural production; heavy metal pollution will also cause a large number of aquatic organisms to die; at the same time, heavy metal pollution Will add more processing costs to industrial production
[0003] At the same time, cyanide and other COD in the electroplating wastewater will also affect the health of the water body. The prior art mainly uses methods such as microbial method, electroflocculation method, electric floatation method, and Fenton method to treat heavy metal ions in electroplating wastewater. Cyanide, COD and other pollutants, but different metal ions have different pH values ​​when they are optimally precipitated. Therefore, when dealing with various heavy metal components, it is inconvenient to control and often fails to meet hygienic standards. Secondly, underflow sludge After filtering, the heavy metal ions contained in them will still be dissolved out, forming secondary pollution
[0004] The Chinese patent application document with the application number 201610017062.2 discloses a treatment method for chromium-containing tannery wastewater based on a magnetic recyclable nano-adsorbent. Adsorption and removal of chromium ions in chromium-containing electroplating wastewater cannot effectively remove other heavy metal ions in electroplating wastewater, and only for the pollutant of metal ion chromium, not for other pollutants, such as cyanide, Toxic and harmful substances such as COD are removed, and it cannot be decomposed for different pH and temperature environments. Organic toxic substances in electroplating wastewater
[0005] The Chinese patent application document with application number 201910380119.9 discloses a titanium-modified Fe 3 o 4 Magnetic nanoparticles and their preparation method and application, in which the oxidation precipitation method is used to synthesize titanium-modified Fe in one step 3 o 4 Magnetic nanoparticles can only be used for the removal of organic pollutants (such as methylene blue, ciprofloxacin, etc.), and cannot remove heavy metal ions in sewage, and the removal of dyes in printing and dyeing wastewater is single, not comprehensive and has a wide pH Scope of application and temperature application range, therefore, urgently need a comprehensive and effective, good regeneration ability, wide pH adaptation range and temperature adaptation range, effective recycling and removal of heavy metal ions, cyanide, COD and Magnetic Composite Nanoparticle Materials of Organic Dyes in Printing and Dyeing Wastewater

Method used

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  • A magnetic composite-cyanide decomposing enzyme composite nanoparticle, its preparation method and application, and its method for treating electroplating wastewater
  • A magnetic composite-cyanide decomposing enzyme composite nanoparticle, its preparation method and application, and its method for treating electroplating wastewater
  • A magnetic composite-cyanide decomposing enzyme composite nanoparticle, its preparation method and application, and its method for treating electroplating wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A magnetic composite-cyanide decomposing enzyme composite nanoparticle provided in this embodiment, by weight component, includes the following components:

[0072] Spinel CdZn 2 o 4 30 parts of ferromagnetic nanoparticles;

[0073] Magnetic Fe 3 o 4 30 parts of nanoparticles;

[0074] SiO 2 15 parts of nanoparticles;

[0075] 50 parts of nitrilase;

[0076] 20 parts of glycidyl methacrylate;

[0077] 20 parts of N-(isobutoxymethyl)acrylamide;

[0078] 5 parts of 3-glycidylpropyltrimethoxysilane;

[0079] 5 parts of polyethyleneimine;

[0080] Adenosine 5'-monophosphate disodium salt 2 parts;

[0081] 1 part of N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid;

[0082] 0.5 parts of p-nitrophenyl palmitate;

[0083] Fe 2 (SO 4 ) 3 9H 2 O 30 copies;

[0084] Cu(SO 4 ) 2 ·6H 2 O 30 copies;

[0085] 5 parts of initiator 2,2'-azobis(2-methylpropionitrile);

[0086] 4 parts of crosslinking agent diethylenetriamine.

[0087] Among them, spinel CdZn ...

Embodiment 2

[0115] A magnetic composite-cyanide decomposing enzyme composite nanoparticle provided in this embodiment, by weight component, includes the following components:

[0116] Spinel CuCr 2 o 4 35 parts of ferromagnetic nanoparticles;

[0117] Magnetic α-Fe 2 o 3 35 parts of nanoparticles;

[0118] SiO 2 17.5 parts of nanoparticles;

[0119] 55 parts of rhodanase;

[0120] 25 parts of polylactic acid;

[0121] 25 parts of N,N'-methylenebisacrylamide;

[0122] 7.5 parts of 3-mercaptopropyltrimethoxysilane;

[0123] For spinel CuCr 2 o 4 7.5 parts of tris (2-aminoethyl) amines modified by ferromagnetic nanoparticles amino group;

[0124] 3 parts of cytidine 5'-monophosphate disodium salt;

[0125] 1.5 parts of N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid;

[0126] 0.75 parts of p-nitrophenyl palmitate;

[0127] Ni(CH 3 COO) 2 4H 2 O 35 copies;

[0128] Mg(CH 3 COO) 2 4H 2 O 35 copies;

[0129] 6.5 parts of initiator 2,2'-azobis[2-(2-imidazolin-2-yl)prop...

Embodiment 3

[0159] A magnetic composite-cyanide decomposing enzyme composite nanoparticle provided in this embodiment, by weight component, includes the following components:

[0160] Spinel CoMn 2 o 4 37 parts of ferromagnetic nanoparticles;

[0161] Magnetic γ-Fe 2 o 3 37 parts of nanoparticles;

[0162] SiO 2 18.5 parts of nanoparticles;

[0163] β-mercaptopyruvate sulfur transferase 58 parts;

[0164] 27.5 parts of polyvinyl alcohol;

[0165] 27.5 parts of polyacrylamide;

[0166] 4.5 parts of γ-methacryloxypropyltrimethoxysilane, 4 parts of γ-(2.3 glycidoxy)propyltrimethoxysilane;

[0167] For spinel CoMn 2 o 4 8.5 parts of 2,2-(ethylenedioxy)bis(ethylamine) modified by ferromagnetic nanoparticles amino group;

[0168] 3.8 parts of guanosine 5'-monophosphate disodium salt;

[0169] 1.8 parts of N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid;

[0170] 0.85 parts of p-nitrophenyl palmitate;

[0171] Al(NO 3 )3 ·6H 2 O 37.5 parts;

[0172] Zn(NO 3 ) 2 ·6H 2 O 3...

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Abstract

The invention discloses a magnetic compound-cyanide decomposing enzyme composite nanoparticle, its preparation method and application, and a method for treating electroplating wastewater by using it. The raw materials for making the composite nanoparticle include: spinel ferromagnetic nanoparticle, magnetic oxide Nanoparticles, SiO 2 Nanoparticles, cyanide decomposing enzyme, first polymer compound, second polymer compound, silane, amine compound, nucleoside monophosphate disodium salt, first inorganic metal salt, second inorganic metal salt; The stone ferromagnet is modified by amino groups, by wrapping SiO 2 The magnetic oxide nanoparticles are modified by epoxy groups, and then the metal adsorption coupling is carried out through the first inorganic metal and the enzyme, which increases the way and amount of enzyme coupling, and stabilizes the enzyme activity and applicable pH range and temperature range. At the same time, the magnetic substance can be used to absorb heavy metal ions or dyes and achieve the effect of decomposing cyanide, reducing the amount of flocculant used and the amount of sludge after treatment.

Description

technical field [0001] The invention belongs to the field of electroplating wastewater treatment, and in particular relates to a magnetic compound-cyanide decomposing enzyme composite nanoparticle, a preparation method and application thereof, and a method for treating electroplating wastewater using the same. Background technique [0002] In recent years, the treatment of heavy metal wastewater has been paid more and more attention. The total amount of heavy metal pollutants discharged into water bodies every year is huge. Some studies have found that zinc, copper, mercury, and cadmium in coastal waters all exceed the standard to varying degrees, and the total heavy metal pollution rate exceeds the standard by 62.9%. The heavy metals in the water body are of complex types, different forms and difficult to control, which pose a serious threat to the environment. Electroplating is one of the main industries that produce heavy metal polluted wastewater. Most of the heavy meta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F1/52C02F1/54C02F1/56C02F1/28C02F1/66C02F101/10C02F101/18C02F101/20C02F101/22C02F101/30C02F103/16C02F103/30
CPCC02F3/342C02F1/5236C02F1/542C02F1/54C02F1/56C02F1/281C02F1/66C02F2101/22C02F2101/103C02F2101/20C02F2103/16C02F2103/30C02F2101/308C02F2101/18C02F2101/30C02F2303/16
Inventor 谢传建
Owner 山东普尼奥水处理科技有限公司
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