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Phenol-containing wastewater treatment method

A wastewater treatment and phenol technology, which is applied in water/sewage treatment, natural water treatment, extraction water/sewage treatment, etc., can solve the problems of increased wastewater treatment costs, unscientific processes, and excessive discharge, and achieves a reduction in phenol content, High extraction efficiency and resource saving effect

Inactive Publication Date: 2021-07-23
禹城京都新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the preparation process of phenolic resin, a large amount of wastewater containing phenol will be produced. The direct discharge of wastewater containing phenol will seriously pollute the environment. The traditional phenolic wastewater uses formaldehyde to condense into phenolic resin under the action of a catalyst. The traditional The phenol content of wastewater after process treatment is still high. Since phenol is a fungicide, high-content phenol wastewater is not easy to enter the biochemical system, resulting in a substantial increase in wastewater treatment costs for enterprises. Due to unscientific processes, it will also cause excessive discharge

Method used

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  • Phenol-containing wastewater treatment method

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Experimental program
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Effect test

Embodiment 1

[0022] Step 1: Measure 7L of aviation kerosene, 3L of 30% sodium hydroxide solution, and 0.3L of span80. After fully mixing the three, stir at a stirring speed of 3000r / min for 20min to obtain the liquid film extract;

[0023] Step 2: get 1L and measure the phenol content in the phenol-containing wastewater to be 63879PPw, add 1L of liquid film extract and fully mix the two at a stirring speed of 60r / min, the phenol in the phenol-containing wastewater and the phenol in the liquid film extract Sodium hydroxide reaction 10min;

[0024] Step 3: Stand still for 10 minutes after the reaction is completed, the water and milk phases are separated, and the water phase is separated from the milk phase to obtain an emulsion containing sodium phenate;

[0025] Step 4: Stir the emulsion containing sodium phenate obtained in step 2 at a stirring speed of 1500r / min for 5 minutes for demulsification. After the demulsification is completed, let it stand for 20 minutes. The water phase and the...

Embodiment 2

[0027] Step 1: Measure 7L of aviation kerosene, 3L of 30% sodium hydroxide solution, and 0.4L of span80. After fully mixing the three, stir at a stirring speed of 3000r / min for 20min to obtain the liquid film extract;

[0028] Step 2: Get 1L and measure the phenol content in the phenol-containing wastewater to be 54684PPw, add 1L of liquid film extract and fully mix the two at a stirring speed of 60r / min, the phenol in the phenol-containing wastewater and the phenol in the liquid film extract Sodium hydroxide reaction 10min;

[0029] Step 3: Stand still for 10 minutes after the reaction is completed, the water and milk phases are separated, and the water phase is separated from the milk phase to obtain an emulsion containing sodium phenate;

[0030] Step 4: Stir the emulsion containing sodium phenate obtained in step 2 at a stirring speed of 1500r / min for 7 minutes to break the emulsion. After the emulsion is broken, let it stand for 20 minutes. The water phase and the oil pha...

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Abstract

The invention relates to a phenol-containing wastewater treatment method, which adopts liquid membrane extraction to treat phenol-containing wastewater, and comprises the following steps: 1, measuring the phenol content in the phenol-containing wastewater, adding a liquid membrane extract according to the measured phenol content, and fully mixing the liquid membrane extract and the phenol-containing wastewater at a stirring speed of 60r / min, reacting phenol in the phenol-containing wastewater with sodium hydroxide in the liquid membrane extraction liquid for 10 min; 2, performing standing for 10 min after the reaction is completed, layering a water phase and an emulsion phase, and separating the water phase from the emulsion phase to obtain an emulsion containing sodium phenate; and 3, stirring the emulsion containing sodium phenate obtained in the step 2 at a stirring speed of 1500r / min for 3-10min for demulsification, performing standing for 20min after demulsification is completed, layering a water phase and an oil phase, separating the oil phase from the phase, and continuing to use the oil phase as a preparation raw material of the liquid membrane extraction liquid. According to the method, phenolic compounds in the wastewater can be effectively enriched into the emulsion, the extraction liquid can be repeatedly used, the extraction efficiency is high, the energy consumption is low, and resources can be effectively saved while wastewater treatment reaches the standard.

Description

technical field [0001] The invention belongs to the field of phenolic resin wastewater treatment, in particular to a method for treating phenol-containing wastewater. Background technique [0002] Phenolic resin is a common organic material. Its most important feature is high temperature resistance. Even at very high temperatures, it can maintain its structural integrity and dimensional stability. Therefore, phenolic resin is used in some high-temperature fields, such as Refractories, friction materials, binders and foundry industries. In the preparation process of phenolic resin, a large amount of wastewater containing phenol will be produced. The direct discharge of wastewater containing phenol will seriously pollute the environment. The traditional phenolic wastewater uses formaldehyde to condense into phenolic resin under the action of a catalyst. The traditional The phenol content of wastewater after process treatment is still high. Since phenol is a fungicide, high-co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C07C37/66C07C37/68C07C37/72C07C37/86C07C39/235C02F1/26C02F1/40C02F1/52C02F103/38C02F101/34
CPCC02F9/00C07C37/66C07C37/009C02F1/40C02F1/26C02F1/5236C02F2103/38C02F2101/345C07C39/235
Inventor 薛斌刘喆
Owner 禹城京都新材料科技有限公司
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