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Method for handling organic wastewater based on Fenton reaction

A technology of organic wastewater and treatment methods, which is applied in the directions of water/sewage multi-stage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of high treatment cost and long treatment time, and achieve the treatment effect Good, reduced processing cost, improved current efficiency

Inactive Publication Date: 2012-02-29
JIANGSU SUJING GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the wastewater treatment of this method can achieve a certain effect, however, this method uses stainless steel mesh as the cathode and anode, and the treatment cost is high and the treatment time is long.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this example, the wastewater is treated through the following steps:

[0034] (1) High-voltage pulse electrocoagulation reaction: adjust the pH of the wastewater to 3.2, and carry out the high-voltage pulse electrocoagulation reaction under the conditions that the distance between the plates is 20mm, the current intensity is 10A, and the electrolysis time is 45min. The cathode and anode plates are commercially available. 3mm thickness Q235 carbon structural steel plate. High-voltage pulse electrocoagulation adopts 380V AC input, which is converted into DC after rectification, and then uses a pulse generator to form a 330V pulse voltage. In the high-voltage pulse electrocoagulation reaction, iron is corroded into divalent iron ions and enters the wastewater, and some divalent iron ions are oxidized to form trivalent iron ions. Due to the coagulation effect of iron ions, iron ions and wastewater Particles with weak negative charges attract opposite sexes to form relat...

Embodiment 2～6

[0038] The wastewater treatment methods of Examples 2-6 are basically the same as those of Example 1, except that the pH of the wastewater before the high-voltage pulse electrocoagulation reaction is slightly different.

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Abstract

The invention discloses a method for handling organic wastewater based on Fenton reaction, comprising the following steps of: (1) high-voltage pulse electric coagulating reaction: regulating the pH value of wastewater to be 3-4 so that wastewater performs high-voltage pulse electric coagulating reaction in a high-voltage pulse electric coagulating device at the current intensity of 1-30A, whereinthe electric coagulating reaction time ranges from 30-120min, the high-voltage pulse electric coagulating device is input by the 100-400V alternating current which is then converted into direct current after rectification, the pulse voltage of 80V to 350V is formed by utilizing a pulse generator, the anode and cathode plates adopted by the high-voltage pulse electric coagulating device are iron plates with the carbon content above 0.45wt% and the space between the polar plates ranges from 10-30mm; (2) Fenton reaction; and (3) concrete precipitation reaction. Compared with the prior art, the invention reduces the handling cost, shortens the handling time and ensures better handling effect.

Description

technical field [0001] The invention relates to a method for treating organic waste water, which is suitable for the treatment of refractory organic waste water produced in industries such as printing and dyeing, chemical industry and pharmacy. Background technique [0002] For a long time, high-concentration and refractory organic wastewater has been a difficult problem in sewage treatment technology. This type of wastewater is mainly wastewater generated in the production process of dyes, pesticides, biomedicine, and chemicals. The pollutants in this kind of wastewater have complex composition, many types, high pollutant concentration, high toxicity, and high salinity, which are difficult to biodegrade. If these substances are discharged into the environment without treatment, they will seriously pollute the ecological environment and threaten human health. Therefore, Pre-treatment techniques must be used for effective and proper treatment. With the rapid development of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06C02F1/72
Inventor 李宇庆马楫马国斌余杰杨文婷
Owner JIANGSU SUJING GROUP
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