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A kind of electroplating sewage treatment agent and preparation method thereof

A sewage treatment agent and organic solvent technology, which is applied in the fields of magnetic field/electric field water/sewage treatment, water/sewage treatment, adsorbed water/sewage treatment, etc. Hazardous waste treatment secondary costs and other issues, to achieve efficient recycling and reuse, saving resources, and improving efficiency

Active Publication Date: 2021-04-13
江苏艾特克环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lime method will produce a larger amount of electroplating sludge than other chemical precipitation methods. The chemical precipitation of calcium hydroxide and transition metals doubles the amount of sludge containing transition metals, increasing the secondary cost of electroplating sludge hazardous waste treatment. cost
A large amount of calcium hydroxide in sludge also increases the difficulty of efficient resource utilization of electroplating sludge

Method used

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Examples

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preparation example Construction

[0036] A preparation method for electroplating sewage treatment agent, comprising the following steps:

[0037] A. Add the propylene glycol into the organic solvent and stir for 15-30min at 10-30°C to obtain a clear solution A;

[0038] B. Under the condition of continuous stirring, add divalent manganese ions to solution A, and continue stirring for 20-30min to obtain yellow solution B;

[0039] C. Under the condition of continuous stirring, add the benzenesulfonamide to the solution B, and keep stirring for 15-20min to obtain a yellow solution C;

[0040] D. Under the condition of continuous stirring, add the sodium azide to the solution C, the solution becomes turbid, continue to stir until the solution is clear again, and obtain the yellow solution D;

[0041] E. Under the condition of continuous stirring, add sodium carbonate to the solution D to adjust the Ph value to 11-13 to obtain the electroplating sewage treatment agent.

[0042]As a preferred solution, diethyl et...

Embodiment 1

[0044] An electroplating sewage treatment agent, comprising the following components:

[0045] Serinol 100g, ethanol 300g, acetonitrile 150g, sodium azide 100g, manganese chloride 100g, sodium carbonate 75g, N-(1,3-dihydroxyisopropyl)-4-methylbenzenesulfonamide 125g;

[0046] A preparation method of an electroplating sewage treatment agent, comprising the steps of:

[0047] A. During stirring at 25°C, add 100 g of serinol to a mixed solvent of 300 g of ethanol and 150 g of acetonitrile, and keep stirring for 25 min to obtain solution A;

[0048] B. During stirring at 25°C, add 100 g of manganese chloride to solution A and continue stirring for 30 minutes to obtain bright yellow solution B;

[0049] C. Under the condition of continuous stirring, add 75g sodium carbonate to solution B and adjust the Ph value to 11 to obtain solution C;

[0050] D. Under the condition of continuous stirring, add 100g sodium azide to solution C, the solution becomes turbid, keep stirring until t...

Embodiment 2

[0053] 2-amino-2-methyl-1,3-propanediol 150g, 2-ethyl-1,3-propanediol 50g, ethanol 180g, acetone 220g, sodium azide 100g, manganese bromide 50g, sodium carbonate 100g, 4 - Isopropylbenzenesulfonamide 50g, 2-amino-N-isopropylbenzenesulfonamide 100g;

[0054] A preparation method of an electroplating sewage treatment agent, comprising the steps of:

[0055] A. During stirring at 25°C, add 150 g of 2-amino-2-methyl-1,3-propanediol to a mixed solvent of 180 g of ethanol and 220 g of acetonitrile, and continue stirring for 25 minutes to obtain solution A;

[0056] B. During stirring at 25°C, add 50 g of manganese bromide to solution A and continue stirring for 30 minutes to obtain orange-yellow solution B;

[0057] C. Under the condition of continuous stirring, add 100g sodium carbonate to solution B and adjust the Ph value to 12 to obtain solution C;

[0058] D. Under the condition of continuous stirring, add 100g sodium azide to the solution C, the solution becomes turbid, keep...

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Abstract

The invention provides an electroplating sewage treatment agent, comprising 10-30 parts of propylene glycol, 30-50 parts of an organic solvent, 5-15 parts of sodium azide, 10-20 parts of divalent manganese ions, 5-10 parts of carbonate, 10-30 parts of benzenesulfonamide; propylene glycol contains at least one amino group or alkyl group; benzenesulfonamide contains at least one alkyl group, and the organic solvent includes at least one alcohol. Aiming at the current background of a large amount of electroplating wastewater and electroplating sludge, a new treatment agent for clean production with integrated purification and high value-added utilization of electroplating wastewater and sludge, the basis for purification and treatment of electroplating wastewater in the matching of wastewater components and regulation of precipitation formation process In terms of resources, electroplating sludge is used to prepare catalyst precursors with adjustable components and controllable structure. It is expected to use the new process of matching and regulating electroplating wastewater to achieve self-purification of electroplating wastewater and obtain a high value-added environment derived from electroplating sludge. The new product of pollution catalyst has been successfully applied in the field of printing and dyeing wastewater decolorization / COD reduction, which has industrial value.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an electroplating sewage treatment agent and a preparation method thereof. Background technique [0002] The main pollutants in electroplating wastewater are transition metal ions, including high concentrations of Fe and heavy metal ions. Therefore, electroplating wastewater can be classified according to its main transition metal elements, such as NiFe-containing electroplating wastewater, CuFe electroplating wastewater, ZnFe electroplating wastewater and CrFe electroplating wastewater or their mixture; at the same time, electroplating wastewater also contains a large amount of various types of grease, oil And organic reagents for electroplating. These organic substances are difficult to degrade and often coexist as sludge components with heavy metals and their inorganic components. Electroplating wastewater also contains more acid-base substances and a certain concentration of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/48C02F11/00C02F103/16C02F101/30C02F101/20
CPCC02F1/288C02F1/481C02F11/00C02F2101/20C02F2101/30C02F2103/16
Inventor 吴智仁徐畅李俊波王磊
Owner 江苏艾特克环境工程有限公司
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