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A kind of treatment process, device and special adsorption resin material of H-acid production wastewater

A technology of adsorption resin and treatment process, applied in the field of water treatment equipment, can solve the problems of low resin adsorption efficiency, complex organic composition, frequent regeneration, etc., and achieve the effects of improving selective adsorption, increasing adsorption capacity, and reducing waste water discharge.

Active Publication Date: 2019-04-05
北京龙美嘉宇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex organic components in the H-acid wastewater, this resin treatment method results in low resin adsorption efficiency and frequent regeneration.

Method used

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  • A kind of treatment process, device and special adsorption resin material of H-acid production wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In the first step, the wastewater after H acid crystallization is extracted by adding a composite extractant mixed with ethyl acetate, kerosene and isotetradecyl alcohol in a volume ratio of 3:2:0.5. The volume ratio range of the composite extractant to wastewater It is 1:4, and the extracted water phase is sent to the second step for processing;

[0034] In the second step, the raffinate obtained in the first step is adsorbed with a chitosan-based adsorption resin modified by hydroxyl silicone oil. The effluent after adsorption is subjected to ozone oxidation treatment, the amount of ozone added in the ozone oxidation treatment is 300ppm, the reaction time is 0.5h, and the reaction temperature is 50°C to obtain the treated product water;

[0035] In the third step, the resin adsorbed in the second step is desorbed with NaOH aqueous solution. The flow rate of the eluent in the desorption process is 1.0BV / h, the temperature of the elution process is 35 ° C, and the conce...

Embodiment 2

[0042] In the first step, the wastewater after H acid crystallization is extracted by adding a composite extractant mixed with ethyl acetate, kerosene and isotetradecyl alcohol in a volume ratio of 5:4:2. The volume ratio range of the composite extractant to wastewater is It is 1: 6, the water phase after extraction is sent to the second step for processing;

[0043] In the second step, the raffinate obtained in the first step is adsorbed with a chitosan-based adsorption resin modified by hydroxyl silicone oil. During the adsorption process, the flow rate of the raw material liquid into the resin is 3.0BV / h, and the adsorption temperature is controlled at 35°C The effluent after adsorption is subjected to ozone oxidation treatment, the amount of ozone added in the ozone oxidation treatment is 800ppm, the reaction time is 1h, and the reaction temperature is 65°C to obtain the treated product water;

[0044] In the third step, the resin adsorbed in the second step is desorbed wi...

Embodiment 3

[0051] In the first step, the wastewater after H acid crystallization is extracted by adding a composite extractant mixed with ethyl acetate, kerosene and isotetradecyl alcohol in a volume ratio of 4:3:1. The volume ratio range of the composite extractant to wastewater It is 1:5, and the extracted water phase is sent to the second step for processing;

[0052] In the second step, the raffinate obtained in the first step is adsorbed with a chitosan-based adsorption resin modified by hydroxyl silicone oil. The effluent after adsorption is subjected to ozone oxidation treatment, the amount of ozone added in the ozone oxidation treatment is 500ppm, the reaction time is 0.7h, and the reaction temperature is 55°C to obtain the treated product water;

[0053] In the third step, the resin adsorbed in the second step is desorbed with NaOH aqueous solution. The flow rate of the eluent in the desorption process is 1.2BV / h, the temperature of the elution process is 37 ° C, and the concent...

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Abstract

The invention relates to a treatment process of H acid industrial wastewater, a device and a special adsorbent resin material, which belong to the technical field of water treatment equipment. According to the treatment process of the H acid industrial wastewater, the device and the special adsorbent resin material provided by the invention, the defect of traditional macroporous adsorbent resin H acid resin wastewater is overcome, a part of COD (Chemical Oxygen Demand) component is removed through an extraction method so as to be prevented from influencing an adsorbing effect of resin, so that the adsorbing capacity of the rein on H acid and T acid is improved; meanwhile, a resin modification technology is utilized, so that the surface is subjected to double-modification treatment of hydroxyl silicone oil and dicyclopentadienyl acrylate, and the selective adsorption on a pigment organic matter / the H acid is improved. The method has the advantages of good treatment effect, and high purity of the recovered H acid and the recovered T acid, the wastewater discharge amount can be reduced, and the T acid is recycled.

Description

technical field [0001] The invention relates to a treatment process, device and special adsorption resin material for H acid production wastewater, and belongs to the technical field of water treatment equipment. Background technique [0002] H acid is one of the important products of naphthalene dye intermediates. H acid waste mother liquor is the waste liquid discharged from the acid analysis section in the production process of H acid, in which the organic matter is mostly naphthalene dye intermediates with sulfonic acid groups, amino groups and hydroxyl groups. At present, the annual discharge of organic naphthalenesulfonic acid wastewater in China is about 1.2 million tons, the treatment rate is only 22.5%, and the treatment pass rate is only 30%. Limited by the characteristics of wastewater, this type of wastewater has always been a difficult problem in industrial wastewater treatment. So far, the treatment methods for this type of wastewater are mainly [0003] Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04B01J20/24B01J20/30C02F103/36
CPCB01J20/24C02F1/26C02F1/286C02F1/78C02F9/00C02F2103/36C02F2209/08C02F2303/16
Inventor 王维根
Owner 北京龙美嘉宇科技有限公司
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