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Method for processing phenolic resin phenolic wastewater

A technology of phenolic resin and treatment method, applied in water/sewage treatment, multi-stage water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problems of increasing the difficulty of biochemical treatment, secondary pollution, etc., and achieve improvement The effect of biochemical treatment ability, stable production process and easy process control

Inactive Publication Date: 2011-07-06
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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Problems solved by technology

The common disadvantage of these treatments is the problem of secondary pollution, which increases the difficulty of biochemical treatment in subsequent processes

Method used

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  • Method for processing phenolic resin phenolic wastewater
  • Method for processing phenolic resin phenolic wastewater

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Embodiment 1～8

[0015] Such as figure 1 As shown, a large-scale test has been carried out through continuous operation in the rectification tower. The production process is to mix the phenol-containing waste water to be treated (phenol content is 2-5wt%) in the waste water tank, and take samples to measure the phenol content of the waste water to be treated. content and pH. Add sodium hydroxide and mix well to adjust the pH value of the wastewater to between 11.5-14. The waste water with adjusted pH value is pumped into the rectification tower from the feed port of the rectification tower by vacuum, and the material is heated with hot water through the reboiler, and the initial stage adopts a total reflux state. Start to collect waste water from the top of the rectification tower after the effluent index at the top of the tower is stable, and start collecting sodium phenate when the temperature difference between the bottom and the top of the tower is 7-10°C and the content of sodium phenate...

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Abstract

The invention discloses a method for processing waste water containing phenol generated in the production process of metlbond resin; the method comprises the following steps: firstly the pH value of waste water is adjusted to 11.5 to 14 to enable the phenol in the waste water to exist in a phenol sodium type, and then the phenol in the waste water is separated by rectification. The content of phenol in the waste water containing phenol is from 20000 ppm to 50000 ppm, the pH equals to 4, and the COD equals to 140000ppm. The rectification technology of the waste water has stable production process, low energy consumption, compact equipment installation, simple operation and easy process control. The rectified waste water has strong biochemical performance, the difficulty of the biochemical treatment of the subsequent work procedures is lowered, and the capability of biochemical treatment is improved. Compared with the common method, the invention causes no secondary pollution. The wastewater processed by the method of the invention has the phenol removing rate of higher than 95 percent and the rectified outlet water BOD / COD equaling to 4, belongs to the easy biochemical treatment method of the waste water containing phenol, and changes the condition of the serious pollution caused by the waste water containing phenol of the metlbond resin industry.

Description

technical field [0001] The invention relates to the treatment of waste water, in particular to the treatment method of phenol-containing waste water produced in the production process of phenolic resin. Background technique [0002] Phenol-containing wastewater is a protoplasmic poison that can be toxic to all biologically active bodies and can inhibit the growth of organisms, so wastewater must be treated before it can be discharged. At present, the methods for treating phenol-containing wastewater in industry are generally divided into three categories: physical and chemical methods, chemical methods, and biochemical methods. Physical and chemical methods mainly include adsorption, extraction, gas and distillation, ion exchange, membrane separation, chemical oxidation, photocatalytic oxidation, reverse osmosis, electrodialysis, ultrafiltration, etc. The common disadvantage of these treatments is the problem of secondary pollution, which increases the difficulty of biochem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C02F101/34C02F1/04C02F1/58C02F1/66
Inventor 唐路林马光金薛斌魏红忠刘翠花
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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