Treatment method of organic wastewater

A technology of organic wastewater and treatment methods, applied in water/sewage treatment, multi-stage water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of high COD removal capacity and metal loss, and achieve high COD removal effect , reduce emissions, reduce the loss of the effect

Active Publication Date: 2018-05-25
FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for treating organic wastewater by catalytic wet ozone oxidation, which has simple process and good stability, and not only has high COD removal capacity, but also can solve the problem of metal loss

Method used

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Examples

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preparation example Construction

[0020] Preparation of Catalyst A1 (Fe-Ce / AC)

[0021] The diameter is 2.0mm, the specific surface area is 704m 2 / g, pore volume 0.7cm 3 / g, commercial columnar activated carbon strips with an average pore size of 2.0 nm were dried at 120 °C for later use. Weigh 500g of dried activated carbon strips, and use Fe(NO 3 ) 3 9H 2 O and Ce(NO 3 ) 3 ·6H 2 O by Fe 2 o 3 and CeO 2 Accounting for 5% and 1.5% of the total weight of the catalyst respectively, they are formulated into solutions. Impregnate activated carbon strips with an equal volume of Fe-Ce solution for 2 hours, dry at 80°C, bake at 550°C for 4 hours in a nitrogen atmosphere, and take out after the temperature drops to room temperature to obtain catalyst A1.

[0022] Preparation of Catalyst A2 (Fe-Ce / Al 2 o 3 )

[0023] The macroporous alumina powder and peptizer are kneaded, rolled, and extruded to make a clover-shaped carrier with a diameter of 2.5 mm, and then calcined at 550 ° C in the air to obtain Al ...

Embodiment 1

[0034] The catalysts A1 and B1 are loaded into the cylindrical reactor according to the volume percentage of 60% and 40% respectively, and the total volume of the catalyst is 100cm 3 . Acid scarlet simulated dye wastewater (COD: 225.0 mg / L) enters the reactor from the bottom of the reactor at a rate of 200 mL / h, the residence time in the catalyst bed is 30 minutes, and the ozone concentration is 7.4 g / m 3 , at a rate of 400 mL / min, enters the bottom of the reactor together with the waste water. The reaction is carried out at normal temperature and pressure. After the reaction, the COD of the liquid is tested, and the catalyst activity is measured according to the removal rate of COD. After the reaction, the content of copper ions in the liquid was tested by inductively coupled plasma mass spectrometry (ICP-MS) to investigate the loss of metals. The results are listed in Table 1.

Embodiment 2

[0036] Catalysts A2 and B1 were loaded into the reactor according to volume percentages of 60% and 40% respectively, and the reaction conditions were the same as in Example 1. The results are listed in Table 1.

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Abstract

The invention relates to the technical field of wastewater treatment and particularly discloses a treatment method of organic wastewater. The treatment method comprises steps as follows: the organic wastewater and ozone enter a reactor for a reaction, and the reactor is sequentially filled with a catalyst A and a catalyst B according to the contact sequence with the organic wastewater. The methodadopts a simple process, is good in stability and high in COD removal capability and can solve the problem about metal loss.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for treating organic wastewater. Background technique [0002] A large amount of organic polluted wastewater caused by industrial production has seriously affected the living conditions of human beings and the ecological environment, and has become an increasingly serious social and economic problem. It is especially difficult to treat organic wastewater that is difficult to biodegrade; Increasingly scarce, the state has become more stringent on the total discharge of pollutants in water, and the formulation of new standards has brought new challenges to the prevention and control of water pollution in my country's refining and chemical enterprises. After the refining and chemical enterprises use the existing secondary biochemical process, the discharge Most of the waste water still cannot meet the discharge requirements of the new standard. Therefore, it is necess...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78C02F9/04C02F101/30
CPCC02F1/283C02F1/725C02F1/78C02F2101/30
Inventor 赵越蒋广安李宝忠张晔刘忠生
Owner FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP
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