| 第 48 卷第 2 期 |  | Vol. 48 No. 2 | | 2018 年 4 月 | Apr 2018 |
|
所屬欄目：安全與環(huán)保
MnO2催化Fenton氧化預處理2，4-D農藥生產(chǎn)廢水 |
| 馬 林1，2，張 燕1，2，秦岳軍1，2，陳 燦1，2，邱德躍1，2，劉 歡1，2，干興利1，2，鐘若楠1，2，張海濤1，2
（1.湖南化工研究院有限公司 國家農藥創(chuàng )制工程技術(shù)研究中心，湖南 長(cháng)沙410014；2. 農用化學(xué)品湖南省重點(diǎn)實(shí)驗室，湖南 長(cháng)沙 410014） |
| 摘 要：以MnO2催化Fenton氧化為主要技術(shù)，采用酸析-催化Fenton氧化-絮凝組合工藝預處理2，4-D農藥生產(chǎn)廢水，考察了酸化廢水和堿性廢水的配比、催化劑種類(lèi)、MnO2投加量、H2O2投加量對組合工藝COD去除率和揮發(fā)酚的影響。結果表明，酸化廢水和堿性廢水的配比為2∶1，催化劑MnO2的催化效果較好，MnO2投加量為0.3%，H2O2投加量為5%，催化Fenton氧化2 h后，COD去除率達75.1%，揮發(fā)酚降至25 mg·L-1，揮發(fā)酚去除率達99.8%以上，且該組合工藝回收了原料固體8.6 kg·t-1左右。 |
| 關(guān)鍵詞：MnO2；催化Fenton氧化；2，4-D農藥生產(chǎn)廢水；原料回收 |
| 中圖分類(lèi)號：X703 文獻標識碼：A 文章編號：1009-9212（2018）02-0069-04 |
|
| Pretreatment of 2,4-Dichlorophenoxyacetic Pesticide Wastewater by Fenton Oxidation with Manganese Dioxide |
| MA Lin1,2, ZHANG Yan1,2, QIN Yue-jun1,2, CHEN Can1,2, QIU De-yue1,2, LIU Huan1,2, GAN Xing-li1,2, ZHONG Ruo-nan1,2, ZHANG Hai-tao1,2
(1. National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China; 2. Hunan Province Key Laboratory for Agrochemicals, Changsha 410014, China) |
| Abstract：Based on Fenton oxidation catalyzed by manganese dioxide (MnO2), 2,4-Dichlorophenoxyacetic pesticide wastewater was pretreated by a combination process of acidification, catalyzed Fenton oxidation and flocculation. Factors including the proportion of acidified wastewater and alkaline wastewater, the type of catalyst and the addition of MnO2 and H2O2 were investigated. The results showed that the best ratio of acidified wastewater and alkaline wastewater was of 2∶1; the catalyst MnO2 was the best catalyst; the addition of MnO2 was 0.3%; and the addition of H2O2 was 5%; Under the best conditions, the COD removal rate was 75.1%, the volatile phenol was reduced to 25 mg·L-1, and its removal rate was 99.8 %. Moreover,from this combination process solid raw material recovered was about 8.6 kg·t-1. |
| Key words：MnO2; catalyzed Fenton oxidation; 2,4-dichlorophenoxyacetic wastewater; material recovery |
|
作者簡(jiǎn)介：馬 林（1985-），女，湖南常德人，助理研究員，碩士，研究方向：污水處理與水污染控制工程（E-mail：matiee6666@163.com）
|
收稿日期：2018-04-18
|
|