Phenol-containing wastewater treatment method

A treatment method and technology for phenolic wastewater, applied in extraction water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as low treatment efficiency, great influence on microbial biological activity, and toxicity

Inactive Publication Date: 2017-11-28
中节能铁汉盖雅(北京)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the biodegradation method is mainly suitable for low-concentration phenol-containing wastewater. Phenol and its derivatives in high-phenol-containing wastewater have a strong toxic effect on microorganisms, and the biological activity of microorganisms is greatly affected, making it difficult for microorganisms to degrade phenolic organic compounds.
[0004] Extraction method and activated carbon adsorption method have a better treatment effect on high-phenol-containing wastewater, but the extraction method has higher requirements for the extraction environment and process. Phenol-containing wastewater is generally alkaline, while extraction and removal of phenols need to be carried out under acidic conditions. Therefore, a large amount of acid is required for extraction, and the extraction method requires sufficient temperature, which is prone to secondary pollution, and the extraction agent recovery also requires high energy consumption; while the activated carbon adsorption method has the disadvantages of easy saturation and difficult analysis, and the regeneration cost High, it is also easy to cause secondary pollution
[0005] Therefore, the existing phenol-containing wastewater treatment methods generally have problems such as high processing difficulty, low processing efficiency, and high processing cost when processing high-phenol-containing wastewater.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Raw water data: phenol 8560mg / L, COD: 36200mg / L, pH8.5; the mixing and settling tank used is a conventional mixing and settling tank for extraction, the mixing and settling tank has 6 levels, and each level is a unit; the unit in each unit Including mixing unit and static clarification unit, the total volume of the unit is 5 liters, the mixing unit is 1 liter, and the static unit is 4 liters; the remover is trioctyl methyl ammonium carbonate;

[0049] Use a peristaltic pump to pump the remover and phenol-containing wastewater directly into the device at the same time, the pumped remover is 2.5mL / min, and the pumped wastewater speed is 50mL / min; the pumping direction is to pump the phenol-containing wastewater from the heavy phase inlet of unit 1 For wastewater, the dephenolization wastewater is pumped out from the heavy phase outlet of unit 4, the remover is pumped into the light phase inlet of unit 4, and the phenol-containing organic phase is pumped out from the light ...

Embodiment 2

[0053] Raw water data: phenol 2800mg / L, COD: 26200mg / L, pH8.7; the mixing and settling tank used is a conventional mixing and settling tank for extraction, the mixing and settling tank is 4 levels, each level is a unit; the unit in each unit Including mixing unit and static clarification unit, the total volume of the unit is 5 liters, the mixing unit is 1 liter, and the static unit is 4 liters; the removal agent is trioctyl ammonium methyl sulfate;

[0054] Use a peristaltic pump to directly pump the remover and phenol-containing wastewater into the device at the same time, the pumping remover is 2mL / min, and the pumping wastewater speed is 80mL / min; the pumping direction is to pump the phenol-containing wastewater from the heavy phase inlet of unit 1 , the dephenolized wastewater is pumped out from the heavy phase outlet of unit 2, the remover is pumped in from the light phase inlet of unit 2, and the phenol-containing organic phase is pumped out from the light phase outlet of...

Embodiment 3

[0058] Raw water data: phenol 5000mg / L, COD: 102000mg / L, pH 10.2; the mixing and settling tank used is a conventional mixing and settling tank for extraction, the mixing and settling tank has 6 levels, and each level is a unit; Including the mixing unit and the static clarification unit, the total volume of the unit is 5 liters, the mixing unit is 1 liter, and the static unit is 4 liters; the removal agent is trizincylmethyl ammonium chloride;

[0059] Use a peristaltic pump to directly pump the remover and phenol-containing wastewater into the device at the same time, the pumped remover is 2mL / min, and the pumped wastewater speed is 70mL / min; the pumping direction is to pump the phenol-containing wastewater from the heavy phase inlet of unit 1 , the dephenolization wastewater is pumped out from the heavy phase outlet of unit 4, the remover is pumped in from the light phase inlet of unit 4, and the phenol-containing organic phase is pumped out from the light phase outlet of uni...

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Abstract

The invention provides a phenol-containing wastewater treatment method. The method comprises the steps of mixing phenol-containing wastewater with a removal agent for dephenolization, and standing for layering and separation, so as to obtain lower-layer dephenolized wastewater and an upper-layer phenol-containing organic phase, wherein the removal agent is an organic quaternary ammonium salt compound. According to the phenol-containing wastewater treatment method, phenol in the phenol-containing wastewater can be efficiently removed by virtue of mixing and standing simply, the treatment temperature and the treatment pressure are not specially required, and the method can be implemented at normal temperature and normal pressure.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a treatment method for phenol-containing wastewater. Background technique [0002] Phenol-containing wastewater refers to wastewater containing phenolic organic matter produced in industrial production such as coking, pharmaceuticals, papermaking, pigments, and petrochemicals. It is one of the common industrial wastewaters. According to the concentration of the pollutants contained, it is divided into low-concentration phenol-containing wastewater and high-concentration phenol-containing wastewater. Usually, wastewater with a phenol content greater than 100 mg / L is high-concentration phenol-containing wastewater. [0003] At present, the treatment methods of phenolic wastewater mainly include biodegradation, solvent treatment, activated carbon adsorption, and chemical oxidation. Among them, the biodegradation method is mainly suitable for low-concentration phenol-co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/26C02F101/34
CPCC02F1/26C02F2101/345
Inventor 付东康白鑫吴广安赵东方吴绍祖
Owner 中节能铁汉盖雅(北京)环境科技有限公司
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