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Aluminum profile modified wastewater treatment method

A technology for wastewater treatment and aluminum profiles, applied in metallurgical wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of insufficient environmental protection in production, and achieve improved adhesion, smooth and soft surface Gloss effect

Inactive Publication Date: 2019-06-04
宜昌益烟机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Aluminum alloy profiles for construction require high comprehensive performance such as corrosion resistance, weather resistance, wear resistance, good appearance decoration and long service life. Therefore, aluminum profiles are protected by electrostatic powder spraying and fluorocarbon resin paint coating. Before decoration, surface chemical conversion treatment must be carried out to improve the bonding force between the coating and the substrate and meet the high corrosion resistance requirements. During the treatment process, waste water containing high content of nickel and chromium will be generated, and the production is not environmentally friendly.
[0003] For example, CN101597758B (2011-3-30) discloses a low-chromium anti-corrosion chemical conversion treatment liquid on the surface of building aluminum profiles and its application method, but the waste water produced in the preparation process still needs further treatment

Method used

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  • Aluminum profile modified wastewater treatment method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Aluminum profile modification method:

[0037] Modifier preparation: prepare 40 parts of sodium fluoride, 60 parts of ammonium bifluoride, 20 parts of potassium permanganate, 50 parts of potassium chromate, 25 parts of zinc phosphate, 18 parts of sodium nitrate, 12 parts of praseodymium chloride, and 16 parts of diaminetetraacetic acid, 14 parts of malic acid, 12 parts of sodium dodecylbenzene sulfate, 13 parts of nickel sulfate, 25 parts of triethanolamine, 8 parts by weight of sodium metaphosphate, and the chlorine content of 10 parts by weight is 20-40 % of chlorinated polypropylene, 900 parts of water; control pH value 4 to obtain modifying agent;

[0038] The first impregnation treatment: heat the modifier to 40°C, and then immerse the aluminum profile in it for 4 minutes;

[0039] The first drying: The aluminum profile after the first impregnation treatment is dried with hot air circulation at a temperature of 95°C for 50 minutes;

[0040] The second impregnatio...

Embodiment 2

[0048] Aluminum profile modification method: modifier preparation: prepare 40 parts of sodium fluoride, 60 parts of ammonium bifluoride, 20 parts of potassium permanganate, 40-50 parts of potassium chromate, 25 parts of zinc phosphate, and 18 parts of sodium nitrate by weight , 12 parts of praseodymium chloride, 16 parts of ethylenediaminetetraacetic acid, 14 parts of malic acid, 12 parts of sodium dodecylbenzene sulfate, 13 parts of nickel sulfate, 25 parts of triethanolamine, 10 parts by weight of potassium borohydride, 13 parts by weight 900 parts of polyolefin substrate adhesion promoter, water; control pH value 4 to obtain modifier;

[0049] The first impregnation treatment: heat the modifier to 40°C, and then immerse the aluminum profile in it for 4 minutes;

[0050] The first drying: The aluminum profile after the first impregnation treatment is dried with hot air circulation at a temperature of 95°C for 50 minutes;

[0051]The second impregnation treatment: carry out ...

Embodiment 3

[0059] Aluminum profile modification method: modifier preparation: prepare 26 parts of sodium fluoride, 40 parts of ammonium bifluoride, 18 parts of potassium permanganate, 46 parts of potassium chromate, 19 parts of zinc phosphate, 12 parts of sodium nitrate, chlorine 9 parts of praseodymium, 13 parts of ethylenediaminetetraacetic acid, 9 parts of malic acid, 10 parts of sodium dodecylbenzene sulfate, 11 parts of nickel sulfate, 21 parts of triethanolamine, 5 parts by weight of sodium borohydride, 7 parts by weight of chlorine 600 parts of chemicalized polypropylene substrate adhesion promoter, water; Control pH value 4 to obtain modifying agent;

[0060] The first impregnation treatment: heat the modifier to 35°C, and then immerse the aluminum profile in it for 3 minutes;

[0061] The first drying: The aluminum profile after the first impregnation treatment is dried with hot air circulation at a temperature of 85°C for 45 minutes;

[0062] The second impregnation treatment:...

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Abstract

The invention relates to a wastewater treatment method, especially to an aluminum profile modified wastewater treatment method. The method of the invention comprises the following steps: adding a substance A and a substance B into wastewater obtained from aluminum profile modified wastewater treatment according to mass ratio of 1:1-4, wherein the substance A is one or two of magnesium nitrate or magnesium sulfate, and the substance B is one or more of calcium hydroxide, calcium oxide or calcium sulfite; adjusting pH value of the wastewater to 7.8-8.2, stirring and reacting for 20-40 min; adding polyacrylamide into a reaction solution, and carrying out solid-liquid separation to obtain wastewater which meets the emission standard. The method of the invention has the following advantages: production is safe and environmentally-friendly, and wastewater is treated thoroughly.

Description

technical field [0001] The invention relates to a method for treating wastewater, in particular to a method for treating wastewater modified by aluminum profiles. Background technique [0002] Aluminum alloy profiles for construction require high comprehensive performance such as corrosion resistance, weather resistance, wear resistance, good appearance decoration and long service life. Therefore, aluminum profiles are protected by electrostatic powder spraying and fluorocarbon resin paint coating. Before decoration, surface chemical conversion treatment must be carried out to improve the bonding force between the coating and the substrate and meet the high corrosion resistance requirements. During the treatment process, waste water containing high content of nickel and chromium will be generated, and the production is not environmentally friendly. [0003] For example, CN101597758B (2011-3-30) discloses a low-chromium anti-corrosion chemical conversion treatment solution fo...

Claims

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Application Information

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IPC IPC(8): C02F9/04C23C22/36C02F101/20C02F101/22C02F103/16
Inventor 张廷茂
Owner 宜昌益烟机械设备有限公司