Simple and convenient method for improving efficiency of nickel-zinc electric-plating bleaching wastewater online resource membrane method closing system

A closed system and resource recovery technology, which is applied in the field of improving the efficiency of the closed system of the nickel-zinc electroplating rinsing wastewater online recycling membrane method, can solve the problems of parking for cleaning, waste liquid secondary pollution, etc., to prevent the formation of compound pollution and save the economy cost, performance improvement

Inactive Publication Date: 2016-12-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, the chemical cleaning method has the following disadvantages: it needs to stop for cleaning; every time it needs to add cleaning agent; after cleaning, the waste liquid will cause secondary pollution

Method used

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  • Simple and convenient method for improving efficiency of nickel-zinc electric-plating bleaching wastewater online resource membrane method closing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add phosphinopolycarboxylate sodium and polyepoxysuccinate sodium binary compound reagent crystals to the regulating pool of the closed system of nickel-zinc electroplating rinsing wastewater on-line recycling membrane method, the mass ratio is 1:10, after adding, the membrane in the system The total concentration of the concentrated side is 1.0ppm. By inhibiting the complex physical and chemical polymerization process of the five components of nickel sulfate, zinc chloride, boric acid, sodium dodecyl sulfate and AB polyamide brightener in the nickel-zinc electroplating solution, it is especially broken The core role of boric acid is to prevent the formation of inorganic and organic compound pollution, maintain a high membrane flux for a long time, improve the performance of the closed system of the nickel-zinc electroplating rinse wastewater online recycling membrane method, and reduce the economic operation cost.

[0027] Implementation effect of this embodiment:

[0...

Embodiment 2

[0033] Add phosphinopolycarboxylate sodium and polyepoxysuccinate sodium binary composite reagent solution at the electroplating tank in the closed system of nickel-zinc electroplating rinsing wastewater online recycling membrane method, the mass ratio is 5:5, after adding, the membrane in the system The total concentration of the concentrated side is 50.0ppm. By inhibiting the complex physical and chemical polymerization process of the five components of nickel sulfate, zinc chloride, boric acid, sodium lauryl sulfate and AB polyamide brightener in the nickel-zinc electroplating solution, it especially breaks the The core role of boric acid is to prevent the formation of inorganic and organic compound pollution, maintain a high membrane flux for a long time, improve the performance of the closed system of the nickel-zinc electroplating rinse wastewater online recycling membrane method, and reduce the economic operation cost.

[0034] Implementation effect of this embodiment: ...

Embodiment 3

[0040] Add phosphinopolycarboxylate sodium and polyepoxysuccinate sodium binary composite reagent solution at the regulating tank of the membrane method closed system for nickel-zinc electroplating rinsing wastewater on-line resource recovery, the mass ratio is 10:1, after adding, the membrane in the system The total concentration of the concentrated side is 100.0ppm. By inhibiting the complex physical and chemical polymerization process of the five components of nickel sulfate, zinc chloride, boric acid, sodium dodecyl sulfate and AB polyamide brightener in the nickel-zinc electroplating solution, it is especially broken The core role of boric acid is to prevent the formation of inorganic and organic compound pollution, maintain a high membrane flux for a long time, improve the performance of the closed system of the nickel-zinc electroplating rinse wastewater online recycling membrane method, and reduce the economic operation cost.

[0041] Implementation effect of this embod...

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Abstract

The invention relates to a simple and convenient method for improving the efficiency of a nickel-zinc electric-plating bleaching wastewater online resource membrane method closing system. The method comprises the following step: adding a phosphine sodium polycarboxylic acid and polyepoxysuccinic acid binary composite reagent, in a mass ratio of (1:10)-(10:1), into the nickel-zinc electric-plating bleaching wastewater online resource membrane method closing system, wherein the addition amount is that the total concentration of the polyepoxysuccinic acid binary composite reagent in a membrane concentration side is 1.0-100ppm. Compared with the prior art, the method has the advantages that the property of the nickel-zinc electric-plating bleaching wastewater online resource membrane method closing system can be greatly improved, the cost can be lowered, the operation can be implemented continuously, no secondary pollution can be caused, and the like.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a simple and convenient method for improving the efficiency of a closed system of a membrane method for on-line resource recovery of nickel-zinc electroplating rinsing wastewater. Background technique [0002] Electroplating is an important process link in the manufacturing industry, and the composition of the discharged wastewater is complex. The average annual discharge of electroplating wastewater in my country is as high as 4 billion tons, of which rinsing wastewater accounts for 80%, about 3.2 billion tons. Nickel-zinc plating is a major type of plating in my country, and the corresponding nickel-zinc electroplating rinsing wastewater is also a large amount of electroplating rinsing wastewater. In addition to heavy metal pollutants containing nickel and zinc ions, it also contains a considerable amount of organic compounds such as additives and brighteners. These che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/08C02F9/10C02F103/16
CPCB01D65/08C02F1/001C02F1/048C02F1/08C02F1/441C02F1/442C02F9/00C02F2103/16C02F2303/14
Inventor 靳强
Owner SHANGHAI JIAO TONG UNIV
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