阅读说明：本技术 一种MnO2催化臭氧氧化模拟草酸废水的方法 (A kind of MnO2The method of O3 catalytic oxidation simulation oxalic acid waste water ) 是由 贾青竹 张鸿敏 任慧宇 于 2019-07-25 设计创作，主要内容包括：本发明提供了一种MnO_2催化臭氧氧化模拟草酸废水的方法,包括如下步骤：将MnO_2催化剂放入模拟草酸废水中,进行搅拌,吸附平衡后开启臭氧发生器进行曝气,催化反应后取样,样品经过针式过滤器过滤后,将滤出MnO_2催化剂的样品按照重铬酸钾滴定法测定COD浓度,计算COD浓度去除率。本发明所述的MnO_2催化臭氧氧化模拟草酸废水的方法采用MnO_2与臭氧联合降解废水中的草酸,对模拟草酸废水处理COD去除效率高,效果好。(The present invention provides a kind of MnO 2 The method that oxalic acid waste water is simulated in O3 catalytic oxidation, includes the following steps: MnO 2 Catalyst is put into simulation oxalic acid waste water, is stirred, and ozone generator is opened after adsorption equilibrium and is aerated, and is sampled after catalysis reaction, sample will filter out MnO after syringe filter filters 2 The sample of catalyst measures COD concentration according to dichromate titration, calculates COD concentration removal rate.MnO of the present invention 2 The method that oxalic acid waste water is simulated in O3 catalytic oxidation uses MnO 2 High to simulation oxalic acid wastewater treatment COD removal efficiency with the oxalic acid in ozone combined degradation waste water, effect is good.)

1. a kind of MnO₂The method of O3 catalytic oxidation simulation oxalic acid waste water, characterized by the following steps: by MnO₂It urges Agent is put into simulation oxalic acid waste water, is stirred, and ozone generator is opened after adsorption equilibrium and is aerated, and is taken after catalysis reaction Sample, sample will filter out MnO after syringe filter filters₂The sample of catalyst is dense according to dichromate titration measurement COD Degree calculates COD concentration removal rate.

2. MnO according to claim 1₂The method of O3 catalytic oxidation simulation oxalic acid waste water, it is characterised in that: described MnO₂The dosage of catalyst is 0.15-0.7g/L.

3. MnO according to claim 2₂The method of O3 catalytic oxidation simulation oxalic acid waste water, it is characterised in that: described MnO₂The dosage of catalyst is 0.5g/L.

4. MnO according to claim 1₂The method of O3 catalytic oxidation simulation oxalic acid waste water, it is characterised in that: described The concentration for simulating oxalic acid waste water mesoxalic acid is 500mg/L.

5. MnO according to claim 1₂The method of O3 catalytic oxidation simulation oxalic acid waste water, it is characterised in that: described The adsorption time of adsorption equilibrium is 20-40min.

6. MnO according to claim 5₂The method of O3 catalytic oxidation simulation oxalic acid waste water, it is characterised in that: described The adsorption time of adsorption equilibrium is 30min.

7. MnO according to claim 1₂The method of O3 catalytic oxidation simulation oxalic acid waste water, it is characterised in that: described The catalysis time of catalysis reaction is 30-45min.

8. MnO according to claim 7₂The method of O3 catalytic oxidation simulation oxalic acid waste water, it is characterised in that: described The catalysis time of catalysis reaction is 30min.

9. MnO according to claim 1₂The method of O3 catalytic oxidation simulation oxalic acid waste water, it is characterised in that: described The ozone output of ozone generator is 10g/h.

Technical field

The invention belongs to O3 catalytic oxidation fields, more particularly, to a kind of MnO₂Oxalic acid waste water is simulated in O3 catalytic oxidation Method.

Background technique

Oxalic acid (OA) is a kind of simplest binary acid in nature, is widely present in water body environment and soil environment.Grass With metal complexing or chelation can occur for acid, be a kind of important industrial chemicals, waste water be mainly derived from medicine, chemical industry, The fields such as weaving.Oxalic acid is one of persistent organic pollutants during ozone oxidation, and it is final to directly affect organic pollutant Mineralization degree.Therefore, the processing method for studying oxalic acid waste water is very necessary.

Ozone high grade oxidation technology can remove the substance for being difficult to aoxidize in water body, without secondary pollution and easy to operate, In It has a wide range of applications in water treatment field.Since independent ozone oxidation has selectivity to the degradation of pollutant, cause to one A little small organic molecules (monoaldehyde, aldehydic acid, monocarboxylic acid, dicarboxylic acids etc.) can not be degradable.Catalytic ozonation is A kind of emerging oxidation technology enhances the decomposition of ozone and the generation degradation target contaminant raising of hydroxyl radical free radical by catalyst Mineralization degree, and the efficiency of O3 catalytic oxidation is higher than the efficiency of independent ozone oxidation.It is useless that oxalic acid is simulated in O3 catalytic oxidation The selection of catalyst is most important in water.

Summary of the invention

In view of this, the present invention is directed to propose a kind of MnO₂The method that oxalic acid waste water is simulated in O3 catalytic oxidation, to simulation The degradation efficiency of oxalic acid waste water is high, and effect is good.

In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:

A kind of MnO₂The method that oxalic acid waste water is simulated in O3 catalytic oxidation, includes the following steps: MnO₂Catalyst is put into mould It in quasi- oxalic acid waste water, is stirred, ozone generator is opened after adsorption equilibrium and is aerated, sampled after catalysis reaction, sample warp After crossing syringe filter filtering, MnO will be filtered out₂The sample of catalyst measures COD concentration according to dichromate titration, calculates COD concentration removal rate.

Further, the MnO₂The dosage of catalyst is 0.15-0.7g/L.

Preferably, the MnO₂The dosage of catalyst is 0.5g/L.

Further, the concentration of the simulation oxalic acid waste water mesoxalic acid is 500mg/L.

Further, the adsorption time of the adsorption equilibrium is 20-40min.

Preferably, the adsorption time of the adsorption equilibrium is 30min.

Further, the catalysis time of the catalysis reaction is 30-45min.

Preferably, the catalysis time of the catalysis reaction is 30min.

Further, the ozone output of the ozone generator is 10g/h.

Compared with the existing technology, MnO of the present invention₂The method that oxalic acid waste water is simulated in O3 catalytic oxidation has following Advantage:

MnO of the present invention₂The method that oxalic acid waste water is simulated in O3 catalytic oxidation uses MnO₂It is useless with ozone combined degradation Oxalic acid in water, high to simulation oxalic acid wastewater treatment COD removal efficiency, effect is good.

Detailed description of the invention

Fig. 1 is the removal efficiency time history plot of the COD of embodiment 5 and comparative example 1；

Fig. 2 is the removal efficiency figure of the COD of embodiment 1-4.

Specific embodiment

In addition to being defined, technical term used in following embodiment has universal with those skilled in the art of the invention The identical meanings of understanding.Test reagent used in following embodiment is unless otherwise specified conventional biochemical reagent；It is described Experimental method is unless otherwise specified conventional method.

Below with reference to examples and drawings, the present invention will be described in detail.