阅读说明：本技术 一种利用紫外光氧化亚硫酸钠降解有机染料的方法 (A method of utilizing ultraviolet oxidation sodium sulfite degradating organic dye ) 是由 于英潭 王楠 王俭 韩红迪 房明朗 陈�峰 于 2019-09-11 设计创作，主要内容包括：本发明公开了一种利用紫外光氧化亚硫酸钠降解有机染料的方法,属于染料废水处理领域。采用紫外光氧化亚硫酸钠的体系降解有机染料橙黄Ⅱ,并在多次实验的基础上找到了降解率最高的条件。最终实验表明,本方法可以有效降解有机染料橙黄Ⅱ,降解率可达92％。用本发明的方法处理含有机染料橙黄Ⅱ的废水,用料投资少,废水处理效果好,速度快,具有良好的社会和经济效益。(The invention discloses a kind of methods using ultraviolet oxidation sodium sulfite degradating organic dye, belong to dye wastewater treatment field.Using the system degradating organic dye orange beta-naphthol of ultraviolet oxidation sodium sulfite, and degradation rate highest condition is had found on the basis of many experiments.Final experiment show this method can effective degradating organic dye orange beta-naphthol, degradation rate is up to 92%.With the waste water of method processing orange beta-naphthol containing organic dyestuff of the invention, materials small investment, good waste water treatment effect, speed is fast, has good social and economic benefit.)

1. a kind of method using ultraviolet oxidation sodium sulfite degradating organic dye, characterized by the following steps: in Sodium sulfite is added in waste water containing organic dyestuff, at 25 ± 2 DEG C, magnetic agitation, ultraviolet light.

2. according to the method described in claim 1, it is characterized by: sodium sulfite is added in the waste water containing organic dyestuff Afterwards, the pH value of reaction solution is adjusted to 6.

3. method according to claim 1 or 2, it is characterised in that: the organic dyestuff is orange beta-naphthol.

4. according to the method described in claim 3, it is characterized by: in molar ratio, sodium sulfite: orange beta-naphthol=50-300:1.

5. according to the method described in claim 4, it is characterized by: in molar ratio, sodium sulfite: orange beta-naphthol=100:1.

6. according to the method described in claim 3, it is characterized by: the ultraviolet light, using launch wavelength in ultra-violet (UV) band 253.7nm low pressure mercury lamp, will be in low pressure mercury lamp intercalation reaction liquid.

7. according to the method described in claim 6, it is characterized by: the low pressure mercury lamp selects lamp tube type low pressure mercury lamp.

8. according to the method described in claim 3, it is characterized by: the initial concentration for adjusting orange beta-naphthol in waste water is 8-21 μ mol/L。

Technical field

The present invention relates to a kind of methods using ultraviolet oxidation sodium sulfite degradating organic dye orange beta-naphthol, belong to organic Dye wastewater treatment technology field.

Background technique

In recent years, the dyeing in China enters quick developing stage, and China becomes scale in world's dyeing industry Maximum country.With the development of dyeing industry, the discharge of dyeing waste water is growing day by day.According to incomplete investigation, world's dyestuff is produced per year About 700,000 tons of amount or more, the DYE PRODUCTION amount in China is more than 150,000 tons, wherein about 10% or more dyestuff is direct with waste water It is discharged into water body.Dyeing waste water contains the organic matter of high concentration, will cause oxygen in water and largely consumes, and causes raw in water Object can not normal growth.And most organic matters make parent, such as benzene, naphthalene, anthracene with enomosphore, these organic matters are difficult to be gone It removes, carcinogenic and mutagenic risk can be had to human body and animals and plants by being discharged into environment, will also result in water environment and soil environment A degree of harm.Requirement with the increasingly strict and people of environmental law regulation to quality of water environment increasingly improves, The improvement of dyeing waste water is very urgent and significant.

Dyeing waste water is with change of water quality is big, coloration is big, quantity is big, water temperature water is big, pH value changes greatly, content of organics The features such as height, complicated component, conventional process has been unable to meet increasingly strict emission request, as bioanalysis needs to occupy greatly It measures soil and cost requirements is high；The discharge standard of physical method treated sewage is extremely difficult to national regulation；Chemical Treatment has Machine object waste water is relatively high and is also easy to produce secondary pollution.

Summary of the invention

In view of the problems of the existing technology, it is an object of that present invention to provide a kind of effective, cheap and easy to get, environmentally protective The biodegrading process of organic dyestuff.

To achieve the purpose of the present invention, the technical solution adopted by the present invention is that: it is a kind of utilize ultraviolet oxidation sodium sulfite The method of degradating organic dye includes the following steps: that sodium sulfite is added in the waste water containing organic dyestuff, in 25 ± 2 DEG C Under, magnetic agitation, ultraviolet light.

Further, after sodium sulfite being added in the waste water of Yu Hanyou organic dyestuff, the pH value of reaction solution is adjusted to 6.

Further, the organic dyestuff is orange beta-naphthol.

Further, in molar ratio, sodium sulfite: orange beta-naphthol=50-300:1.Further, in molar ratio, sulfurous Sour sodium: orange beta-naphthol=100:1.

Further, the ultraviolet light will be low using launch wavelength in the low pressure mercury lamp of the 253.7nm of ultra-violet (UV) band In pressure mercury lamp intercalation reaction liquid.Further, the low pressure mercury lamp selects lamp tube type low pressure mercury lamp.

Further, the initial concentration for adjusting orange beta-naphthol in waste water is 8-21 μm of ol/L.

The beneficial effects of the present invention are:

1) of the invention, light source has screened low pressure mercury lamp type, safer in practical applications, has good economic effect Benefit.

2) of the invention, the mistake that organic dyestuff orange beta-naphthol is degraded in ultraviolet light-sulphite system is explored by laboratory Journey, using high-level oxidation technology, organic dye waste water by ultraviolet degradation containing orange beta-naphthol, by ultraviolet light to sulphite The living radical that oxidation generates degrades to orange beta-naphthol, has good Significance for Environment.

3) of the invention, using chemical oxidation method, using sodium sulfite as oxidant, by mercury lamp intercalation reaction liquid in reaction Center contacts it sufficiently with reaction solution, and final orange beta-naphthol degradation rate is up to 92%.Contain engine dyeing with method processing of the invention Expect the waste water of orange beta-naphthol, materials small investment, good waste water treatment effect, speed is fast, has good social and economic benefit.

Detailed description of the invention

Fig. 1 is influence of the pH value to degradation efficiency.

Fig. 2 is influence of the concentration of sodium sulfite to degradation efficiency.

Fig. 3 is influence of the initial concentration to degradation efficiency.

Specific embodiment

For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still It should be appreciated that these descriptions are only further explanation the features and advantages of the present invention, rather than to the claims in the present invention Limitation.