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Method for treating radioactive wastewater by utilizing microwave-Fenton method

A radioactive wastewater and microwave treatment technology, which is applied in the direction of radioactive pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of slow degradation speed, insufficient degradation of organic matter, and insufficient reaction efficiency, so as to improve degradation efficiency, The effect of improving the degradation effect

Active Publication Date: 2017-12-19
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of simply using Fenton’s reagent will be gradually manifested. Simply using ferrous salt in Fenton’s reagent as a catalyst to catalyze hydrogen peroxide to oxidize organic matter in wastewater has a slow degradation rate, insufficient reaction efficiency, and insufficient degradation of organic matter.

Method used

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  • Method for treating radioactive wastewater by utilizing microwave-Fenton method

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Effect test

Embodiment 1

[0025] figure 1 Show the microwave-Fenton method of the present invention to process the device of radioactive waste water; A kind of microwave-Fenton method process the method for radioactive waste water, comprise the following steps:

[0026] Step 1. Input the radioactive waste water into the pH adjustment tank 1, adjust the pH of the radioactive waste water to 2-3, pass the adjusted radioactive waste water through the feed liquid pump 18 at a rate of 1m 3 The speed input of / h is positioned at the Fenton oxidation chamber 3 of treatment device 2 tops; Open the Fenton reagent spraying device 4 of Fenton oxidation chamber 3 tops, spray Fenton reagent to radioactive waste water with the speed of 100mL / min; Said Fenton oxidation reaction chamber 3 A plurality of inclined overflow deflectors 5 are arranged at intervals on both sides of the interior; radioactive waste water flows downward along the plurality of inclined overflow deflectors 5 to achieve degradation treatment; the ov...

Embodiment 2

[0032] A method for treating radioactive waste water by microwave-Fenton method, comprising the following steps:

[0033] Step 1: Input the radioactive waste water into the pH adjustment tank 1, adjust the pH of the radioactive waste water to 2-3, pass the adjusted radioactive waste water through the feed liquid pump 18 at a rate of 2m 3 The speed input of / h is positioned at the Fenton oxidation chamber 3 of treatment device 2 tops; Open the Fenton reagent spraying device 4 of Fenton oxidation chamber 3 tops, spray Fenton reagent to radioactive waste water with the speed of 250mL / min; Said Fenton oxidation reaction chamber 3 A plurality of inclined overflow deflectors 5 are arranged at intervals on both sides of the interior; radioactive waste water flows downward along the plurality of inclined overflow deflectors 5 to achieve degradation treatment; the overflow deflectors 5 are fixedly arranged with Accommodating a screen bag 6 of a solid-phase catalytic promoter; a solid-p...

Embodiment 3

[0039] A method for treating radioactive waste water by microwave-Fenton method, comprising the following steps:

[0040] Step 1: Input the radioactive waste water into the pH adjustment tank 1, adjust the pH of the radioactive waste water to 2-3, pass the adjusted radioactive waste water through the feed liquid pump 18 at a rate of 1.5m 3 The speed input of / h is positioned at the Fenton oxidation chamber 3 of treatment device 2 tops; Open the Fenton reagent spraying device 4 of Fenton oxidation chamber 3 tops, spray Fenton reagent to radioactive waste water with the speed of 250mL / min; Said Fenton oxidation reaction chamber 3 A plurality of inclined overflow deflectors 5 are arranged at intervals on both sides of the interior; radioactive waste water flows downward along the plurality of inclined overflow deflectors 5 to achieve degradation treatment; the overflow deflectors 5 are fixedly arranged with Accommodating a screen bag 6 of a solid-phase catalytic promoter; a solid...

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Abstract

The invention discloses a method for treating radioactive wastewater by utilizing a microwave-Fenton method. The method comprises the following steps: after regulating the pH (Potential of Hydrogen) of the radioactive wastewater, conveying the radioactive wastewater into a Fenton oxidizing chamber; spraying a Fenton reagent into the radioactive wastewater; enabling the radioactive wastewater to flow downward along a plurality of inclined overflowing flow guide plates to realize degradation treatment, wherein each overflowing flow guide plate is fixedly provided with a screen mesh bag for containing a solid-phase catalytic auxiliary agent; enabling the treated radioactive wastewater into a microwave treatment chamber and adding a coagulant and ozone into the microwave treatment chamber; starting a microwave generator to treat the radioactive wastewater; conveying the treated radioactive wastewater into a solid-phase separation chamber; conveying a liquid phase into a filtering barrel, which is internally provided with a filtering membrane, through a liquid phase discharging opening and carrying out filtering treatment; meanwhile, arranging an ultraviolet lamp tube in the filtering barrel and turning on the ultraviolet lamp tube in a process of carrying out the filtering treatment to finish the treatment of the radioactive wastewater.

Description

technical field [0001] The invention relates to a treatment method for radioactive waste water, in particular to a microwave-Fenton method for treating radioactive waste water. Background technique [0002] Nuclear fuel production, nuclear power plant operation, nuclear facility decommissioning and other processes will generate a large amount of radioactive (high-level, medium-level and low-level) organic waste liquid. Due to its strong radioactivity, long half-life, and high biological and chemical toxicity, it is harmful to humans and the ecological environment. pose a great long-term hazard. At present, China is implementing the plan of "actively developing nuclear power". According to the "Energy Development Strategic Action Plan (2014-2020)" approved by the State Council, it is estimated that by 2020, the installed capacity of nuclear power will reach 58 million kilowatts, and the capacity under construction will reach 30 million kilowatts. As mentioned above, by then,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/56B01D71/82B01D67/00B01J31/26
CPCB01D67/0006B01D71/82B01J31/26C02F1/302C02F1/32C02F1/44C02F1/5236C02F1/56C02F1/66C02F1/722C02F1/725C02F9/00C02F2101/006C02F2305/026
Inventor 竹文坤段涛牟涛周建姚卫棠王茜
Owner SOUTHWEAT UNIV OF SCI & TECH
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