| 第 51 卷第 1 期 |  | Vol. 51 No. 1 | | 2021 年 2 月 | Feb 2021 |
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所屬欄目：其它
粉煤灰重介質(zhì)輔助結團絮凝處理硫雙滅多威廢水 |
| 張 燕1，2，蘇勝男3，裴文婷3，丁德軍3，陳 燦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；3.湖南海利常德農藥化工有限公司，湖南 常德 415001） |
| 摘 要：采用粉煤灰做重介質(zhì)輔助結團絮凝的方法，改善了芬頓處理后的硫雙滅多威廢水絮凝效果，解決了工程上常規絮凝固液分離帶來(lái)的困難。先通過(guò)燒杯實(shí)驗，分別考察了粉煤灰的粒徑和投加量，聚合氯化鋁（PAC）和陰離子型聚丙烯酰胺（PAM）的投加量，以及攪拌速度對絮凝效果的影響。結果表明，優(yōu)化后的絮凝條件為：250目的粉煤灰，投加量為1.6 g·L-1，PAC和PAM的投加量分別為1 g·L-1、2 mg·L-1，攪拌速度為100 r·min-1。將優(yōu)化參數應用于車(chē)間預處理裝置上，并對裝置稍加改動(dòng)，在介質(zhì)絮凝工藝中投加粉煤灰，實(shí)際工藝出水。懸浮物（SS）、化學(xué)需氧量（COD）、4-氨基吡啶去除率分別達到99.95%、86.67%、96.55%，均有良好的處理效果。排出的污泥含固量為20%~30%，大大改善了污泥的脫水性能。 |
| 關(guān)鍵詞：粉煤灰；重介質(zhì)；結團絮凝；脫水性能；硫雙滅多威廢水 |
| 中圖分類(lèi)號：X703 文獻標識碼：A 文章編號：1009-9212（2021）01-0045-05 |
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| Treatment of Sulphur Dimethadol Wastewater by Cluster Flocculation Assisted by Fly Ash Heavy Medium |
| ZHANG Yan1,2, SU Sheng-nan3, PEI Wen-ting3, DING De-jun3, CHEN Can1,2*
(1. Hunan Research Institute of Chemical Industry, Changsha 410014, China; 2. Hunan Province Key Laboratory for Agrochemicals, Changsha 410014, China; 3. Hunan Haili Changde Pesticide Chemical Co.,Ltd., Changde 415001, China) |
| Abstract：Using fly ash as heavy medium assisted cluster flocculation improved the flocculation effect of Fenton treated dimethomyl Sulphur dimethadol wastewater, and solved the difficulty caused by conventional flocculation separation in engineering. The effects of particle size and dosage of fly ash, dosage of PAC and PAM, and stirring speed on flocculation were investigated by beaker test. The results showed that the optimal flocculation conditions were as follows: the dosage of 250 mesh fly ash was 1.6 g·L-1, the dosage (mass ratio) of PAC and PAM were 1 g·L-1 and 2 mg·L-1, respectively, and the stirring speed was 100 r·min-1. When the above parameters were applied to the workshop pretreatment device, and the device was slightly modified, fly ash was added in the medium flocculation process, the actual process effluent SS, COD, 4-aminopyridine removal rate reaches 99.95%, 86.67%, 96.55%, respectively, all of which had good treatment effect. The solid content of the discharged sludge was 20%~30%, which greatly improved the dewatering performance of the sludge. |
| Key words：fly ash; heavy medium; cluster flocculation; dehydration performance; sulphur dimethadol wastewater |
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基金項目：湖南省企業(yè)科技創(chuàng )新創(chuàng )業(yè)團隊支持計劃資助項目。
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作者簡(jiǎn)介： 張 燕（1984—），女，湖北荊門(mén)人，碩士，高級工程師，研究方向：水污染控制與治理（E-mail：75532415@qq.com）
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聯(lián) 系 人：陳 燦，高級工程師，研究方向：水污染控制與治理（E-mail： ccan1221@126.com）。
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收稿日期：2020-12-12
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