Resource utilization of waste water containing phenol and sodium sulfate and treating method

A treatment method, sodium sulfate technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem that valuable components cannot be fully utilized, increase treatment costs, high Solve problems such as cost, achieve the effect of simple process operation and treatment, reduce wastewater discharge, and low cost

Inactive Publication Date: 2012-02-15
扬州大学江都高端装备工程技术研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] If the wastewater is directly discharged, on the one hand, the valuable components in the wastewater cannot be fully utilized, resulting in a large waste of resources and increasing production costs; on the other hand, it will cause se

Method used

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  • Resource utilization of waste water containing phenol and sodium sulfate and treating method
  • Resource utilization of waste water containing phenol and sodium sulfate and treating method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The main process equipment is subsidence solid-liquid separation device, heat pump evaporation and concentration equipment, cooling crystallization equipment, evaporation and drying equipment, etc.

[0034] A method for resource utilization and treatment of wastewater containing phenol and sodium sulfate, which is a method for treating wastewater containing 0.1% to 2.0% phenol and 5% to 30% sodium sulfate, and recycling phenol and sodium sulfate, the method steps as follows:

[0035] (1) Adjust the pH value: at 1m 3 Contain 1kg phenol, the waste water of 50kg sodium sulfate, add pH regulator sodium hydroxide, adjust the pH to 10, make the phenol in the material react with sodium hydroxide to generate sodium phenate, and the material enters the next step;

[0036] (2) Evaporation and concentration: The material obtained in the previous step is evaporated and concentrated. In the heat pump evaporation and concentration equipment, the heat pump technology is used to press...

Embodiment 2

[0045] The main process equipment is filter type solid-liquid separation device, heat pump evaporation and concentration equipment, cooling crystallization equipment, evaporation and drying equipment, etc.

[0046] A method for resource utilization and treatment of wastewater containing phenol and sodium sulfate, which is a method for treating wastewater containing 0.1% to 2.0% phenol and 5% to 30% sodium sulfate, and recycling phenol and sodium sulfate, the method steps as follows:

[0047] (1) Adjust the pH value: at 1m 3 Contain 20kg phenol, the waste water of 200kg sodium sulfate, add pH regulator sodium hydroxide, adjust the pH to 12, make the phenol in the material react with sodium hydroxide to generate sodium phenate, and the material enters the next step;

[0048] (2) Evaporation and concentration: The material obtained in the previous step is evaporated and concentrated. In the heat pump evaporation and concentration equipment, the heat pump technology is used to pres...

Embodiment 3

[0057] The main process equipment is centrifugal solid-liquid separation device, heat pump evaporation and concentration equipment, cooling crystallization equipment, evaporation and drying equipment, etc.

[0058] A method for resource utilization and treatment of wastewater containing phenol and sodium sulfate, which is a method for treating wastewater containing 0.1% to 2.0% phenol and 5% to 30% sodium sulfate, and recycling phenol and sodium sulfate, the method steps as follows:

[0059] (1) Adjust the pH value: at 1m 3 Contain 5kg phenol, the waste water of 300kg sodium sulfate, add pH regulator sodium hydroxide, adjust the pH to 11, make the phenol in the material react with sodium hydroxide to generate sodium phenate, and the material enters the next step;

[0060] (2) Evaporation and concentration: The material obtained in the previous step is evaporated and concentrated. In the heat pump evaporation and concentration equipment, the heat pump technology is used to pre...

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PUM

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Abstract

The invention relates to resource utilization of waste water containing phenol and sodium sulfate and a treating method, and especially to a method of treating waste water containing 0.1% to 2.0% of phenol and 5% to 30% of sodium sulfate and recycling phenol and sodium sulfate. The method comprises the following steps: (1) pH value adjusting; (2) evaporative concentration; (3) cooling and crystallization; (4) solid-liquid separation; (5) pH value adjusting; (6) evaporation and drying; (7) condensation; (8) pH value adjusting; (9) evaporation and drying. The method enables sodium phenolate and a byproduct of sodium sulfate to be obtained simultaneously. The invention has the advantages of a reasonable process, a simple method, environmental protection, energy consumption, low operational cost, good product quality and a high utilization rate of valuable components.

Description

technical field [0001] The invention belongs to the field of environmental chemical industry, in particular to a resource utilization and treatment method for waste water containing phenol and sodium sulfate. Background technique [0002] Wastewater containing phenol and sodium sulfate is a typical phenolic wastewater in the chemical industry. Using benzene as raw material, the process of producing phenol through sulfonation and alkali fusion will produce wastewater containing phenol and sodium sulfate; in the process of producing sebacic acid with castor oil as raw material, phenol as a diluent and catalyst will also produce waste water containing Wastewater of phenol and sodium sulfate. [0003] If the wastewater is directly discharged, on the one hand, the valuable components in the wastewater cannot be fully utilized, resulting in a large waste of resources and increasing production costs; on the other hand, it will cause serious environmental pollution. If the detoxif...

Claims

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Application Information

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IPC IPC(8): C02F9/10C01D5/00C07C39/04C07C37/66
Inventor 王雅琼张小兴陈新雨孙剑许文林
Owner 扬州大学江都高端装备工程技术研究所
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