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Method for treating sewage containing radioactive substances

A technology for radioactive substances and sewage, applied in the direction of radioactive pollutants, filtration treatment, sludge treatment, etc., can solve problems such as poor effect, and achieve the effect of large specific surface area, good adsorption and filtration performance, and low cost

Inactive Publication Date: 2017-05-24
HEFEI ZHIHUI LONGTUTENG INTPROP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are often mixed pollutants in sewage with radioactive substances, and traditional treatment methods are often ineffective

Method used

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  • Method for treating sewage containing radioactive substances

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Get 52 parts of vermiculite powder, 27 parts of active calcium silicate, 5 parts of pyroxene, 9 parts of basalt fiber, 2.3 parts of calcium sulfate, 0.4 part of carbon nanotube, 7 parts of nano titanium dioxide, 1.3 parts of potassium tartrate and silica sol 11 parts; crush basalt fiber through a 180-mesh sieve, add nano-titanium dioxide and silica sol, stir and grind for 1 hour, and dry at 180°C to obtain modified nano-titanium dioxide; mix modified nano-titanium dioxide and vermiculite powder at 250°C for 1 hour Add water and stir potassium tartrate until completely dissolved, stir the previous material for 0.6h, raise the temperature to 100°C and continue stirring for 1h, then add active calcium silicate and other remaining ingredients to disperse and grind for 3h, dry and discharge.

Embodiment 2

[0021] Embodiment 2: get 42 parts of vermiculite powder, 25 parts of active calcium silicate, 7 parts of pyroxene, 11 parts of basalt fiber, 4.1 parts of calcium sulfate, 0.2 part of carbon nanotube, 9 parts of nano titanium dioxide, 2.5 parts of potassium tartrate and silica sol 8 parts; crush the basalt fiber through a 180-mesh sieve, add nano-titanium dioxide and silica sol, stir and grind for 1.2 hours, and dry at 160°C to obtain modified nano-titanium dioxide; mix and stir the modified nano-titanium dioxide and vermiculite powder at 220°C for 1.3 h: Stir the potassium tartrate with water until it is completely dissolved, stir the previous material for 0.5h, raise the temperature to 90°C and continue stirring for 0.8h, then add active calcium silicate and other remaining ingredients to disperse and grind for 2h, dry and discharge.

Embodiment 3

[0022] Embodiment 3: get 54 parts of vermiculite powder, 37 parts of active calcium silicate, 6 parts of pyroxene, 10 parts of basalt fiber, 3 parts of calcium sulfate, 0.3 part of carbon nanotube, 10 parts of nano titanium dioxide, 2 parts of potassium tartrate and silica sol 10 parts; crush the basalt fiber through a 150-mesh sieve, add nano-titanium dioxide and silica sol, stir and grind for 2 hours, and dry at 150°C to obtain modified nano-titanium dioxide; mix and stir the modified nano-titanium dioxide and vermiculite powder at 200°C for 1.5 h: Stir the potassium tartrate with water until it is completely dissolved, stir the previous material for 0.8h, raise the temperature to 110°C and continue stirring for 0.5h, then add active calcium silicate and other remaining ingredients to disperse and grind for 2.5h, dry and discharge.

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PUM

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Abstract

The invention discloses a method for treating sewage containing radioactive substances. After a pH value of sewage is adjusted, active adsorbent is added to the sewage for stirring, solid precipitate is fixed after solid-liquid separation, then bacteria and enzyme are sequentially added to the sewage without radioactive substances, and stirring and standing are performed respectively to purify the sewage. Compared with the prior art, the adopted active adsorbent is large in specific surface area, good in adsorption and filtration performance and low in cost, cooperates with a microbial water purifier to remove most of pollutants including the radioactive substances in radioactive sewage.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for treating sewage containing radioactive substances. Background technique [0002] Sewage, usually refers to certain polluted discharge water from domestic and production. Sewage mainly includes domestic sewage, industrial wastewater and initial rainwater. With the development of my country's industry, the discharge of industrial wastewater is increasing day by day. After the industrial wastewater that does not meet the discharge standards is discharged into the water body, it will pollute the surface water and groundwater. Once a water body is polluted, it is not easy to restore it to its original state in a short period of time. After the water body is polluted, not only will the water quality fail to meet the standards of drinking water and fishery water, but it will also increase the chemical harmful substances and hardness in the groundwater, which will a...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F11/00C02F1/28B01J20/22B01J20/30
CPCC02F9/00B01J20/045B01J20/06B01J20/10B01J20/103B01J20/205B01J20/22C02F1/001C02F1/28C02F1/281C02F1/286C02F1/66C02F3/342C02F11/008C02F2101/006C02F2301/08C02F2305/08
Inventor 不公告发明人
Owner HEFEI ZHIHUI LONGTUTENG INTPROP CO LTD
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