Study on the photocatalytic treatment of coking wastewater with RE-TiO2/PAC reagent

doi:10.11894/1005-829x.2009.29(6).15

Abstract

Abstract:

Rare earth-doped TiO2(RE-TiO2) and powder active carbon(PAC) reagent oxidation is prepared for treating coking wastewater. It shows very good cooperativity. When the mass ratio of PAC/TiO2 is 1∶1， the treatment efficiency of Nd -TiO2/PAC is the best. The effects of initial pH， initial concentration of organism COD， concentration of catalyst， and gas flow rate on the Nd-TiO2/PAC photocatalysis treatment of coking wastewater are investigated. When the initial COD is 385 mg/L， and coking wastewater pH is 9.82， aeration rate is 0.5 L/h and catalyst concentration is 4 g/L， and after being treated by photocatalysis for 90 min， the COD removal rate can reach 89%.

Key words: coking wastewater, photocatalysis, rare-doped TiO2, active carbon, cooperativity synergistic effect

摘要：

采用简单方法制备RE-TiO2 /PAC(RE 代表稀土元素，PAC 指粉末活性炭)光催化剂，用于焦化废水的光催化处理，表现出良好的协同效应。当m(PAC)∶m(TiO2)=1∶1 时制备的稀土Nd-TiO2/PAC 处理效果最好。考察了废水初始 pH、有机物(COD)初始浓度、催化剂浓度、气体流量对Nd-TiO2/PAC 光催化处理焦化废水的影响。初始COD 为385 mg/L、pH 为9.82 的焦化废水，在气体流量为0.5 L/h、催化剂质量浓度4 g/L 时，光催化处理90 min 后，COD 去除率可达 89%。

关键词: 焦化废水, 光催化, 稀土掺杂TiO², 活性炭, 协同效应

CLC Number:

X703.1:TQ032

Zhao Qinghua, Ye Changying, Quan Xuejun. Study on the photocatalytic treatment of coking wastewater with RE-TiO²/PAC reagent[J]. INDUSTRIAL WATER TREATMENT, 2009, 29(6): 15-19.

赵清华, 叶长英, 全学军. RE-TiO²/PAC 协同光催化处理焦化废水[J]. 工业水处理, 2009, 29(6): 15-19.

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https://www.iwt.cn/EN/Y2009/V29/I6/15

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Study on the photocatalytic treatment of coking wastewater with RE-TiO²/PAC reagent

RE-TiO²/PAC 协同光催化处理焦化废水

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