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Irradiation treatment method for vinyl cyanide wastewater

A technology of acrylonitrile wastewater and its treatment method, which is applied in natural water treatment, light water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of unsatisfactory treatment effect, less industrial application, and high treatment cost. Achieve the effect of great practical value, low cost and simple processing equipment

Inactive Publication Date: 2009-04-08
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of these treatment methods are research reports, with high treatment costs, complex equipment, and unsatisfactory treatment effects, and few of them have been industrialized.

Method used

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  • Irradiation treatment method for vinyl cyanide wastewater
  • Irradiation treatment method for vinyl cyanide wastewater
  • Irradiation treatment method for vinyl cyanide wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1 Take three parts of 10mL acrylonitrile waste water prepared by yourself with a concentration of 1000mg / L, add it into a radiation-resistant glass container, and place it in the central channel for irradiation treatment;

[0017] 2 waste water through γ- 60 After treatment with 10, 15, and 20 kGy irradiation doses provided by the Co source, the acrylonitrile polymer precipitate was separated from the water phase by filtration.

[0018] 3 Use pyridine colorimetry to measure the residual acrylonitrile content, and then calculate the removal rate of acrylonitrile.

[0019] Table 1 shows the treatment effects of different irradiation doses on acrylonitrile wastewater with a concentration of 1000 mg / L. It can be seen from Table 1 that the removal rate of acrylonitrile is higher when the irradiation dose is 10kGy.

[0020] The treatment effect of the acrylonitrile waste water that concentration is 1000mg / L under the different irradiation doses of table 1

[0021]

Embodiment 2

[0023] 1 Take three 10mL parts of acrylonitrile wastewater with a concentration of 4000mg / L and adjust the initial pH values ​​of the wastewater to 4.0, 7.0 and 11.0 respectively;

[0024] 2. Add it to the radiation-resistant glass container and place it in the central channel for radiation treatment;

[0025] 3 waste water through γ- 60 The Co source provided 10kGy and 15kGy of radiation dose treatment, and the acrylonitrile polymer precipitate was separated from the water phase by filtration.

[0026] 4 Measure the concentration of residual acrylonitrile by pyridine colorimetry, and then calculate the removal rate of acrylonitrile.

[0027] figure 1 The results show that when the initial pH value of acrylonitrile wastewater is between 4.0 and 11.0, radiation treatment has little effect on the removal rate of acrylonitrile. Therefore, for actual acrylonitrile wastewater, radiation treatment can be directly carried out without adjusting its pH value, which simplifies the pr...

Embodiment 3

[0029] 1 Take four 10mL parts of acrylonitrile wastewater with a concentration of 4000mg / L and add it into a radiation-resistant glass container, and place it in the central channel for irradiation treatment;

[0030] 2 waste water through γ- 60 After treatment with 3kGy, 5kGy, 10kGy and 15kGy irradiation doses provided by the Co source, the acrylonitrile polymer precipitate was separated from the aqueous phase by filtration.

[0031] 3 Use pyridine colorimetric method to measure residual acrylonitrile concentration, and then calculate the removal rate of acrylonitrile in wastewater under different irradiation doses.

[0032] Table 2 shows the removal rate of acrylonitrile under different irradiation doses when the concentration of acrylonitrile wastewater is 4000mg / L. From the data in the table, it can be known that the preferred irradiation dose of acrylonitrile wastewater with this concentration is 10-15kGy.

[0033] The treatment effect of acrylonitrile wastewater with a ...

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Abstract

The invention discloses an irradiation processing method for acrylonitrile waste water, which belongs to the field of nuclear technology application and environmental protection. The method mainly makes use of the principle that ionizing radiation can induce acrylonitrile to have a polyreaction, enables the acrylonitrile in the waste water to have the polyreaction through the ionizing radiation; and then acrylonitrile polymer deposit is separated from the water phase through a filtration method so as to realize the aim of removing the acrylonitrile from the waste water. The method can effectively remove the biologically toxic acrylonitrile pollutant in the high-concentration acrylonitrile waste water. The method is a waste water processing technology with high efficiency, economy and environmental friendliness.

Description

technical field [0001] The invention relates to a method for treating acrylonitrile wastewater, in particular to a method for treating acrylonitrile wastewater by using ionizing radiation technology (such as gamma rays or electron beams). Background technique [0002] Acrylonitrile is an important organic chemical raw material widely used in many industrial fields such as synthetic fiber, synthetic chemistry and synthetic rubber. However, a large amount of industrial wastewater containing toxic and harmful substances is usually produced during the production of acrylonitrile. Acrylonitrile wastewater mainly contains high concentrations of inorganic cyanide and organic nitrile substances such as acrylonitrile and acetonitrile. Due to its toxic, harmful and refractory characteristics, acrylonitrile wastewater is difficult to be effectively treated by traditional physical and chemical methods and biological methods. [0003] At present, the treatment methods of acrylonitrile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F103/36
Inventor 王建龙孙宏图
Owner TSINGHUA UNIV
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