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Extraction agent and treatment method of high-salt and high-phenol wastewater

A treatment method and extraction agent technology are applied in the treatment field of extraction agent and high-salt and high-phenol wastewater, which can solve the problems of large investment in equipment, high energy consumption, and difficulty in application, so as to ensure the treatment effect, improve the extraction effect, and reduce the treatment cost effect

Inactive Publication Date: 2019-10-01
BEIJING GUODIAN FUTONG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-salt and high-organic waste water is difficult to treat using traditional physical and chemical methods. Wet oxidation and supercritical oxidation will inevitably cause problems such as high energy consumption and large equipment investment, and the production process is difficult to continue
High-salt wastewater has a strong inhibitory effect on microbial biochemical treatment methods, especially the biotoxicity of phenolic substances on microorganisms, making it difficult to apply biochemical treatment to high-salt and high-phenol wastewater
Therefore, the treatment effect of high-salt and high-phenol wastewater is poor

Method used

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  • Extraction agent and treatment method of high-salt and high-phenol wastewater
  • Extraction agent and treatment method of high-salt and high-phenol wastewater
  • Extraction agent and treatment method of high-salt and high-phenol wastewater

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Embodiment 1

[0040] This embodiment provides an extractant, which includes 40 parts of sulfonated kerosene, 5 parts of tributyl phosphate and 10 parts of trioctyl tertiary amine.

[0041] The total amount of high-salt and high-phenol wastewater to be treated is 2m 3 / h, where Na 2 SO 4 The content is 100000mg / L, and the total phenol content is 15000ppm. This embodiment also provides a treatment method for high-salt and high-phenol wastewater, comprising the following steps:

[0042] S1, pretreatment;

[0043]Add 98% concentrated sulfuric acid to the high-salt and high-phenol wastewater to adjust the pH to 2. The acid-adjusted wastewater enters the microfiltration device for filtration to form a filtrate. The pore size of the flat membrane of the microfiltration is 1 micron.

[0044] S2, extraction;

[0045] In this embodiment, the extraction treatment section has 5 stages of extraction, including 3 stages of extraction and 2 stages of stripping.

[0046] The filtrate and extractant w...

Embodiment 2

[0053] This embodiment provides an extractant, which includes 90 parts of sulfonated kerosene, 70 parts of tributyl phosphate and 80 parts of trioctyl tertiary amine.

[0054] The total amount of high-salt and high-phenol wastewater to be treated is 5m 3 / h, wherein the NaCl content is 200000mg / L, and the total phenol content is 20000ppm. This embodiment also provides a treatment method for high-salt and high-phenol wastewater, comprising the following steps:

[0055] S1, pretreatment;

[0056] Add 20% dilute hydrochloric acid to the high-salt and high-phenol wastewater to adjust the pH to 2. The acid-adjusted wastewater enters the microfiltration device for filtration. The pore size of the flat membrane of the microfiltration is 1 micron.

[0057] S2, extraction;

[0058] In this embodiment, the extraction treatment section has 5 stages of extraction, including 3 stages of extraction and 2 stages of stripping.

[0059] The filtrate and extractant were heated to 50°C, resp...

Embodiment 3- Embodiment 5

[0066] The raw materials of the extractant provided in Example 3-Example 5 are all the same, the difference is that the ratio is different, and the operation of the treatment method of the high-salt and high-phenol wastewater provided by Example 3-Example 5 is basically the same, the difference is that the specific operating conditions are different.

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Abstract

The invention relates to the field of wastewater treatment, and in particular relates to an extraction agent and a treatment method of high-salt and high-phenol wastewater. The extraction agent comprises 40-90 parts of sulfonated kerosene, 5-70 parts of a phosphotriester compound and 10-80 parts of a tertiary amine compound. The extraction agent can effectively carry out multi-stage extraction onthe high-salt and high-phenol wastewater and improves the treatment effect of the high-salt and high-phenol wastewater. The total phenol content of the wastewater after extraction by the treatment method can be reduced to below 150 ppm, the dephenolization efficiency can reach 99%, and the extraction agent can be reused after back extraction and regeneration; salts in water after evaporation and crystallization are collected, and the resource application of the salts can be realized. The extraction agent can greatly reduce the treatment cost of the high-salt and high-phenol wastewater and improves the treatment efficiency.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an extractant and a treatment method for high-salt and high-phenol wastewater. Background technique [0002] Pharmaceutical, chemical and other industries will inevitably produce a large amount of high-salt and high-organic wastewater in the production process. The high-concentration salt and various organic substances contained in this type of wastewater will cause great harm to local aquatic animals and plants and the overall ecological environment if they are directly discharged into natural water. Therefore, advanced treatment of this type of wastewater is required. High-salt and high-organic waste water is difficult to treat by traditional physical and chemical methods. Wet oxidation and supercritical oxidation will inevitably cause problems such as high energy consumption and large equipment investment, and the production process is difficult to continue. High-salt wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10B01D11/04C02F101/34
CPCB01D11/0492C02F1/04C02F1/06C02F1/265C02F1/444C02F9/00C02F2101/345
Inventor 赵崇李若征滕济林杨冰刘晓宇田颖张培林李星伟
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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