Method for processing phenolic wastewater produced in needle-like coke production process

A production process and technology for phenolic wastewater, applied in filtration treatment, water/sewage treatment, natural water treatment, etc., can solve the problems of poor needle coke wastewater effect, complicated operation, high energy consumption, etc., and achieve easy regeneration, process Simple, less organic pollution

Inactive Publication Date: 2018-09-18
南京赢点色谱分离技术有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the methods for treating phenol-containing wastewater at home and abroad mainly include: leather extraction method, biochemical method, liquid membrane method and activated carbon adsorption method, but there are some defects, such as complicated operation, high energy consumption, high cost, etc. Burnt wastewater does not work well

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  • Method for processing phenolic wastewater produced in needle-like coke production process
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  • Method for processing phenolic wastewater produced in needle-like coke production process

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Embodiment 1

[0025] A method for treating phenol-containing wastewater produced by a needle coke production process, the specific steps of which are:

[0026] (1) Filter waste water to remove suspended matter and solid impurities therein;

[0027] (2) Install the activated mixed filler in a glass column or a stainless steel column;

[0028] (1) Use a constant flow pump to control the waste water to flow through the resin column for adsorption and removal of phenol;

[0029] (3) Soak the resin column with eluent, elute and regenerate and reuse.

[0030] In the above-mentioned step (2), the mixed filler of the macroporous adsorption resin of the styrenic skeleton and the strongly basic anion exchange resin of the styrenic skeleton is used.

[0031] In the above step (2), the volume ratio of the macroporous adsorption resin is 70-85%.

[0032] In the above step (3), the constant flow pump controls the waste water flow rate to be 4-6 times column volume / hour.

[0033] In the above step (4)...

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Abstract

The invention relates to a method for processing phenolic wastewater produced in a needle-like coke production process. The wastewater produced in the needle-like coke production process mainly contains phenol and a nitrogen-ammonium compound, the concentration of the wastewater is higher, and a pH value is close to 10. The property of the wastewater determines more critical phenol removal conditions, and separation is difficultly realized by adopting a conventional method. According to the method disclosed by the invention, phenolic materials in the wastewater is adsorbed by creatively usingmixed filler prepared from macroporous absorption resin using a framework as a styrene system and strongly basic anion exchange resin using the framework as the styrene system. Because both of the phenolic materials and the styrene-system resin have phenyl ring structures, special combination can be formed between the phenolic materials and the styrene-system resin through interaction of pi and pi. In addition, due to an ionic exchange effect between phenol ions and anion exchange resin, a good phenol removal effect of the mixed filler can be achieved. The wastewater processed by adopting themethod completely meet the emission standard; moreover, the method disclosed by the invention has the advantages of simple technological process, low cost, good effect, greenness and environmental protection.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, and specifically relates to a method for treating phenol-containing waste water produced in a needle coke production process. Background technique [0002] Needle coke is a high-quality carbon raw material. Its surface has obvious striped lines. When it is broken, it is mostly long needle-shaped fragments. The fibrous structure can be observed under a microscope, so it is called needle coke. Needle coke is the raw material for producing high-power graphite electrodes and ultra-high-power graphite electrodes. Graphite electrodes made of needle coke have strong thermal shock resistance, high mechanical strength, good oxidation performance, low electrode consumption and allowable current density. Great advantages. Needle coke uses heavy distillate oil or coal tar and asphalt as raw materials in petroleum processing plants. During the production process, wastewater containing high conc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F103/34C02F101/34C02F101/16
CPCC02F1/001C02F1/285C02F2101/16C02F2101/345C02F2103/34
Inventor 张麟张维冰钟志华赵雅梦王守凯安路阳
Owner 南京赢点色谱分离技术有限公司
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