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A synergist for the treatment of sewage containing high-concentration nonionic surfactants and its preparation method and application

A non-ionic surface and sewage treatment technology, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of not being suitable for a large amount of sewage treatment, unable to handle a large amount of waste water, and the cost of sewage treatment Advanced problems, to achieve the effect of clear and transparent water quality, conducive to environmental protection, and rapid onset of effect

Active Publication Date: 2021-11-05
广州正利金属表面处理剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the method provided by patent CN201410524699.1 is to first adjust the pH value of sewage with sulfuric acid, then add ferric sulfate catalyst, and perform electrolytic treatment. Sewage also needs additional acid removal treatment before it can be discharged, and the cost of sewage treatment is high
[0004] The current commonly used treatment technology for high-concentration non-ionic surfactants in sewage is not only complicated and not suitable for the treatment of large amounts of sewage; but also the cost of treatment is high, resulting in a large number of water bodies that do not meet the discharge standards entering nature and polluting the environment

Method used

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  • A synergist for the treatment of sewage containing high-concentration nonionic surfactants and its preparation method and application
  • A synergist for the treatment of sewage containing high-concentration nonionic surfactants and its preparation method and application
  • A synergist for the treatment of sewage containing high-concentration nonionic surfactants and its preparation method and application

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Effect test

Embodiment 1

[0031] A synergist for the treatment of sewage containing high-concentration nonionic surfactants, prepared from the following raw materials and processes:

[0032] (1) Weigh the raw materials according to the mass percentage: 12% melamine, 10% formaldehyde, 5% ethylene glycol, 15% formic acid, and the balance is water;

[0033] (2) Heat water to 70°C, then mix all the remaining raw materials, stir, keep warm for 2 hours to undergo polycondensation reaction, and then the synergist can be obtained.

Embodiment 2

[0035] A synergist for sewage treatment containing high-concentration nonionic surfactants, the preparation process is the same as in Example 1, except that the following raw materials are used in the following mass percentages: 6% melamine, 8% formaldehyde, and 2% glycerol , hydrochloric acid 5%, the balance is water; the reaction temperature is 60°C, and the reaction time is 1.5h.

Embodiment 3

[0037] A synergist for the treatment of sewage containing high-concentration nonionic surfactants. The preparation process is the same as in Example 1, except that the following raw materials are used in the following mass percentages: 8% hexamethylenetetramine, 15% glyoxal %, 2% methanol, 10% sulfamic acid, and water as the balance; the reaction temperature is 60°C, and the reaction time is 3h.

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Abstract

The invention discloses a synergist for treating sewage containing high-concentration nonionic surfactants, a preparation method and application thereof. The synergist is prepared from the raw materials in the following weight percentages: C 1 ~C 5 Primary alkyl alcohol 1~10%, C 1 ~C 3 1-30% of aldehydes, 1-40% of pH regulators, 1-20% of amine polymers, and the balance is water. The synergist provided by the present invention is a high-molecular polymer, which contains a large amount of anchoring groups such as -OH, -NH, COO-, etc., and can quickly absorb the micelles formed by non-ionic surfactants in sewage, so that it can be simply and quickly Remove high-concentration non-ionic surfactants in sewage; in addition, after the synergist is used in conjunction with PAC and PAM, it can significantly reduce the sewage turbidity from 1200NTU to 12NTU, and the water quality after treatment is clear and transparent. The synergist uses The process is simple, convenient and fast, and is suitable for the treatment of a large amount of high-concentration non-ionic surfactant sewage, with a wide range of applications.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a synergist for sewage treatment containing high-concentration nonionic surfactants, a preparation method and application thereof. Background technique [0002] Nonionic surfactants (NIS) have excellent foaming, wetting, emulsifying and dispersing properties and unique anti-electrolyte properties, and are widely used in various fields of national production and life. With the development of its application, non-ionic surfactant wastewater is also increasing year by year. This type of wastewater usually has the following characteristics: 1) There are many types of organic pollutants in wastewater, complex components, and high concentrations; 2) Organic pollutants in wastewater It is easy to combine with other pollutants to produce new complex and refractory pollutants; 3) Wastewater generally contains a large amount of emulsifiers and detergents. Surfactants in wastewate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/52C02F1/56C02F101/30
CPCC02F1/285C02F1/5236C02F1/56C02F2101/301
Inventor 张仕杰李正强
Owner 广州正利金属表面处理剂有限公司
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