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Treatment method of H acid production wastewater and equipment for implementing the method

A technology for the production of wastewater and treatment methods, which is applied in water/sewage treatment equipment, textile industry wastewater treatment, multi-stage water treatment, etc., can solve the problems of high cost of membrane separation technology and insufficient wastewater treatment, and achieve the goal of reducing COD value Effect

Active Publication Date: 2018-05-22
JIANGSU MINGSHENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is not thorough enough for wastewater treatment, and the cost of membrane separation technology is relatively high

Method used

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  • Treatment method of H acid production wastewater and equipment for implementing the method
  • Treatment method of H acid production wastewater and equipment for implementing the method
  • Treatment method of H acid production wastewater and equipment for implementing the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] figure 1 A process flow diagram of a treatment method for H acid production wastewater according to an embodiment of the present invention is shown. Such as figure 1 As shown, collect 500mL of H-acid production wastewater (the H-acid production wastewater adopted in this embodiment is the T-acid wastewater in the production process), and after removing the insoluble matter in the T-acid wastewater, adjust the temperature to 60°C. The pH value was adjusted to 1.5 to obtain the first mixed solution. The first mixed solution is mixed with 1000mL of extractant, wherein, in the extractant, trioctylamine:n-octanol:sulfonated kerosene is 18.2:9.1:72.7; at a temperature of 60°C, extraction and separation are carried out to obtain A first light phase component and a first heavy phase component.

[0087] The first light phase component is mixed with 1500mL of 30% NaOH solution by mass percentage, and back-extracted and separated at a temperature of 60° C. to obtain the secon...

Embodiment 2

[0092] Collect 500mL of H-acid production wastewater (the H-acid production wastewater used in this embodiment is the H-acid wastewater in the production process), remove the insoluble matter in the H-acid wastewater, adjust the temperature to 60°C, and adjust the pH to 1.5 to obtain the first mixed solution. The first mixed solution is mixed with the extractant of 1000mL, wherein the extractant includes: complexing agent, cosolvent and diluent, wherein, the trioctylamine: n-octanol: sulfonated kerosene is 18.2:9.1: 72.7; at a temperature of 60° C., extract and separate to obtain the first light phase component and the first heavy phase component.

[0093] Mix the first light phase component with 30% 1500mL NaOH solution, and carry out back extraction and separation at a temperature of 60° C. to obtain the second light phase component and the second heavy phase component; The second light phase component was mixed with 150 mL of 30% NaOH solution by mass percentage, and back-...

Embodiment 3

[0098] Collect 500mL of H-acid production wastewater (the H-acid production wastewater used in this example is the T-acid wastewater in the production process), remove the insoluble matter in the T-acid wastewater, adjust the temperature to 60°C, and adjust the pH to 1.5 to obtain the first mixed solution. The first mixed solution is mixed with the extractant of 500mL, wherein, the extractant includes: complexing agent, cosolvent and diluent, wherein, the trioctylamine: n-octanol: sulfonated kerosene is 18.2:9.1: 72.7; at a temperature of 60° C., extract and separate to obtain the first light phase component and the first heavy phase component.

[0099] The first light phase component is mixed with 1000mL of 30% NaOH solution by mass percentage, and stripped and separated at a temperature of 60° C. to obtain the second light phase component and the second heavy phase component; The second light phase component was mixed with 100 mL of 30% by mass NaOH solution, and stripped a...

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Abstract

The invention provides a treatment method for 1-amino-8-naphthol-3,6-disulfonic acid monosodium salt production wastewater and equipment for implementing the method. The treatment method comprises steps as follows: the 1-amino-8-naphthol-3,6-disulfonic acid monosodium salt production wastewater is collected, after insoluble substances in the 1-amino-8-naphthol-3,6-disulfonic acid monosodium salt production wastewater are removed, the temperature is regulated to 40-70 DEG C, preferably, the temperature is regulated to 50-60 DEG C, pH value is regulated to 1-3, and a first mixed solution is obtained; the first mixed solution is mixed with an extraction agent for extraction separation, a first light phase component and a first heavy phase component are obtained; the first light phase component is mixed with strip liquor for stripping separation, and a second light phase component and a second heavy phase component are obtained; the first heavy phase component is subjected to oxidation treatment, a second mixed solution is obtained, impurities in the second mixed solution are removed, and sulfate is obtained. The sulfate can be applied to an acid-dye dyeing auxiliary, a leather dust removing agent and the like.

Description

technical field [0001] The invention relates to a treatment method for H acid production wastewater and equipment for implementing the method, belonging to the field of industrial wastewater treatment. Background technique [0002] H acid (1-amino-8-naphthol-3,6-disulfonic acid monosodium salt) is an important intermediate in the production of direct, acidic and reactive dyes. Its main purpose is to synthesize azo dyes, dye cotton, wool, Dark dyes for hemp and silk fibers need to be replaced by dyes synthesized with H acid as an intermediate. T acid (1-naphthylamine-3,6,8-trisulfonic acid) is usually obtained by reduction of 8-nitro-1,3,6-naphthalenetrisulfonic acid, which is the precursor for the preparation of H acid. The COD values ​​of H-acid wastewater and T-acid wastewater in H-acid production wastewater are about 30,000mg / L and 70,000mg / L respectively, and they have deep color, complex components, high toxicity, high salt content, and strong acidity, so they cannot b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08
CPCC02F1/001C02F1/04C02F1/26C02F1/66C02F1/72C02F9/00C02F2101/38C02F2103/30C02F2201/007C02F2301/08
Inventor 阮海兴郭理想彭春嘉
Owner JIANGSU MINGSHENG CHEM
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