高浓度制药废水氧化降解处理工艺的研究+答辩PPT
关键词： Fenton氧化法 化学制药废水 TiO2光催化氧化 CODcr去除率 BOD5去除率
Abstract
In this study, by Fenton and photocatalytic oxidation treatment of high concentration pharmaceutical wastewater, examined the factors on the treatment effect. In the Fenton oxidation, using single factor analysis, FeSO4•7H2O dosage, H2O2/Fe2 + dosing ratio, initial pH, reaction time. The results show that, Fenton oxidation method, FeSO4•7H2O dosage of 2.5g/200mL, H2O2/Fe2 + dosing ratio of 8:1, pH value of 6, when the reaction time was 120min optimal conditions, the removal of CODcr reached 77.7%, the removal of BOD5 was 65.0%, the ratio of B / C was improved from 0.195 to 0.305. In the TiO2 photocatalytic oxidation, it is also the single factor analysis, TiO2 (nanometer) dosage, initial pH, reaction time. The results show that 0.01g/200mL, reaction time 20min, pH value of 6 for the optimum condition, CODcr the removal of CODcr was 43.8%, the removal of BOD5 was 35.0%, B/C ratio increased from the 0.191 to 0.214. By comparing the experimental results of two methods to determine the best solution for the chemical and pharmaceutical wastewater treatment that is Fenton oxidation.
Keywords：Fenton oxidation； Chemical and pharmaceutical wastewater；TiO2 photocatalytic oxidation；the removal ratio of CODcr ； the removal ratio of BOD5 ；
目 录
1前 言 1
1.1 选题背景 1
1.2制药废水降解工艺 2
1.2.1制药废水处理传统工艺 2
1.2.2常用氧化降解工艺 3
1.3 国内外研究现状 5
1.3.1 国外研究现状 5
1.3.2 国内研究现状 6
1.4 本课题的研究意义 6
1.5 本课题的研究内容 7
2 实验装置与各指标的测定方法 8
2.1实验仪器与试剂 8
2.1.1 实验仪器 8
2.1.2 实验试剂 8
2.1.3 实验水样 8
2.2各指标的测定方法 8
2.2.1 COD的测定方法 8
2.2.2 BOD5的测定方法 9
2.2.3 电导率、pH的测定方法 10
3 Fenton氧化技术处理该化学制药废水 11
3.1 Fenton反应机理 11
3.2实验方法 12
3.2.1 反应结束时调节pH至7 12
3.2.2 反应结束时不调节pH 12
3.2.3小结 12
3.3 结果与讨论 13
3.3.1 FeSO4•7H2O投加量的影响 13
3.3.2 H2O2/Fe2+投加配比的影响 15
3.3.3初始pH值的影响 16
3.3.4 反应时间的影响 18
3.3.5 Fenton试剂法对该化学制药废水可生化性的影响 19
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