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Method for carrying out organic wastewater pretreatment by using an iron-carbon-Fenton-integrated reactor

A technology of organic wastewater and reactors, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment, etc., can solve the problems of poor biodegradability and large amount of chemical sludge, and achieve the goal of improving biochemical ability Effect

Active Publication Date: 2014-03-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of the poor biodegradability of the treated sewage and the large amount of chemical sludge generated by the existing iron-carbon micro-electrolysis method combined with the Fenton method to treat wastewater, and provides an integrated method of using iron-carbon-Fenton Method for pretreatment of organic wastewater by chemical reactor

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  • Method for carrying out organic wastewater pretreatment by using an iron-carbon-Fenton-integrated reactor
  • Method for carrying out organic wastewater pretreatment by using an iron-carbon-Fenton-integrated reactor

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specific Embodiment approach 1

[0017] Specific embodiment one: the method for utilizing the iron-carbon-Fenton integrated reactor of the present embodiment to carry out organic wastewater pretreatment is carried out according to the following steps:

[0018] 1. Iron-carbon-Fenton integrated reactor system: Iron-carbon-Fenton integrated reactor system is composed of pH adjustment pool 1, iron-carbon-Fenton integrated reactor 2, fan 3 and return pipe 4;

[0019] The lower part of the side wall of the iron-carbon-Fenton integrated reactor 2 is provided with a water inlet 2-1, the upper part of the side wall is provided with a water outlet 2-2, and the bottom is provided with an air inlet 2-3; in the iron-carbon-Fenton integrated reactor 2 Filled with iron carbon filler 2-4;

[0020] The pH adjustment pool 1 is connected to the water inlet 2-1 of the iron-carbon-Fenton integrated reactor 2, and the fan 3 is connected to the air inlet 2-3 of the iron-carbon-Fenton integrated reactor 2; A return pipe 4 is provid...

specific Embodiment approach 2

[0022] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the iron-carbon filler is a mixture of elemental iron and charcoal, and the mass ratio of elemental iron and charcoal is (0.8-5.0): 1; other and specific implementation Method 1 is the same.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the elemental iron is iron balls or iron flakes. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for carrying out organic wastewater pretreatment by using an iron-carbon-Fenton-integrated reactor. The invention relates to an industrial sewage pretreatment method, and aims at solving the technical problems of poor biodegradability of the sewage processed by the existing method for processing wastewater by combining an iron-carbon microelectrolysis method with a Fenton method, and large chemical sludge quantity. An iron-carbon-Fenton-integrated reactor system comprises a pH regulating reservoir, an iron-carbon-Fenton-integrated reactor, a fan and a return pipe, wherein the organic wastewater is injected into the regulating reservoir to adjust the pH, and then led to the iron-carbon-Fenton-integrated reactor; meanwhile, the fan aerates and H2O2 is fed to the reactor free of supplement of Fe<2+>, so as to achieve a good treatment effect. The chemical oxygen demand (COD) value of the sewage after treatment is reduced by over 50%, the biochemical oxygen demand (BOD) / COD value is 0.45-0.6, and a subsequent biological unit is facilitated. The method can be applied to industrial sewage pretreatment.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for pretreating industrial sewage by an iron-carbon-Fenton integrated process. Background technique [0002] The iron-carbon micro-electrolysis process is based on an electrochemical corrosion reaction of metal materials such as iron and aluminum. Iron filings or iron-carbon are soaked in the electrolyte solution, and the corrosion and electrolysis are used to treat wastewater. Fenton's method is based on H 2 o 2 It is a catalytic oxidation method in which the oxidant is used as the catalyst and the ferrous salt is used as the catalyst. [0003] At present, there are many methods of using iron-carbon micro-electrolysis and Fenton method to treat wastewater, such as iron-carbon micro-electrolysis-Fenton combination, Fenton-enhanced iron-carbon micro-electrolysis process, etc. These methods are to first pass the sewage through iron-carbon micro-e...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/461C02F1/52C02F101/30
Inventor 邱珊徐善文丁晓马放邓凤霞韩帅吴伟杰陈聪
Owner HARBIN INST OF TECH
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