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Novel organic waste water treatment process

A technology for organic wastewater treatment and treatment process, applied in the field of environmental protection, can solve the problems of metal loss and high COD removal capacity, and achieve the effects of reducing emissions, high COD removal effect, and shortening reaction time.

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

AI Technical Summary

Problems solved by technology

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

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0028] Preparation of Catalyst A1 (Fe / AC)

[0029] 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 by Fe 2 o 3 Accounting for the proportion of 8% of the total weight of the catalyst is made into a solution. The activated carbon strip was impregnated with an equal volume of the solution for 4 hours, dried at 80°C, calcined at 550°C under a nitrogen atmosphere for 4 hours, and taken out after the temperature dropped to room temperature to obtain catalyst A1.

[0030] Preparation of Catalyst A2 (Mn / AC)

[0031] 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 carbo...

Embodiment 1

[0041] The catalysts A1 and B1 were loaded into the inner rotating bed and the outer rotating bed of the reactor respectively according to volume percentages of 65% and 35%, and the distance between the inner and outer rotating beds was 5 mm. The total volume of the catalyst is 100cm 3 . Reaction conditions: the COD of acid scarlet simulated dye wastewater is 286.3 mg / L, the feed rate is 200 mL / h, and the ozone concentration is 8.0 g / m 3 , the gas flow rate was 400 mL / min, the rotary bed speed was 600 rpm, and the reaction was 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

[0043] Catalysts A2 and B1 were loaded into the reactor according to volume percentages of 20% and 80% respectively, the rotational speed of the rotating bed was 200 rpm, there was no gap between the inner and outer rotating beds, and other 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 waste water treatment, and particularly discloses an organic waste water treatment process. The treatment process comprises the following steps: a rotating bed reactor is taken as reaction equipment, wherein a casing of the rotating bed reactor comprises an inner rotating bed and an outer rotating bed; organic waste water is taken as a raw material and subjected to oxidation reaction in the presence of ozone; the inner rotating bed comprises a corrosion-resistant frame and a catalyst A, and the outer rotating bed comprises a corrosion-resistant frame and a catalyst B. The treatment process is simple process and good in stability, the COD (chemical oxygen demand) removal capacity is high, and the problem of metal loss can be solved.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a treatment process for 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 nece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78C02F101/30C02F101/34C02F103/36
CPCC02F1/725C02F1/78C02F2101/30C02F2101/308C02F2101/345C02F2103/365
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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