第 43 卷第 5 期 |  | Vol. 43 No. 5 | 2013 年 10 月 | Oct 2013 |
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所屬欄目:安全與環(huán)保
混凝-電催化氧化預處理垃圾滲濾液 |
袁麗嬪1,李 明2,殷 杰2,廖九英1,李 曄1,仙 雯1,孟 勇2*,喻寧亞1,2*
(1. 湖南省資源精細化與先進(jìn)材料重點(diǎn)實(shí)驗室 湖南師范大學(xué),湖南 長(cháng)沙 410081; 2. 石化新材料與資源精細利用國家地方聯(lián)合工程實(shí)驗室,湖南師范大學(xué),湖南 長(cháng)沙 410081) |
摘 要:研究了聚合磷硫酸鐵絮凝劑(PFPS),混凝和電催化氧化方法相結合,預處理垃圾滲濾液。實(shí)驗結果表明當絮凝劑用量為8‰、攪拌速度為450 r/min、攪拌時(shí)間為6 min、pH為7時(shí),化學(xué)需氧量(COD)、固體懸浮物(SS)和濁度的去除率分別可達51.5%、86.7%和96.8%。其滲濾液出水經(jīng)過(guò)隨后的電催化氧化處理后,在pH為9、槽電壓為16 V、曝氣量為0.04 m3/h、極板間距為2 cm時(shí),可以高效率去除氨氮(NH3-N),達到國家滲濾液排放標準(GB 16889-2008),并且對COD也有較高的去除效果,其去除率可達69.1%;炷-電催化氧化作用預處理垃圾滲濾液可以有效降低其后續生化處理的運行負荷。 |
關(guān)鍵詞:聚合磷硫酸鐵;電催化氧化;垃圾滲濾液;正交試驗;絮凝 |
中圖分類(lèi)號:X703 文獻標識碼:A 文章編號:1009-9212(2013)05-0063-04 |
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Pre-treatment of Landfill Leachate by a Combined Coagulation with Electro-catalysis Oxidation Method |
YUAN Li-pin1,LI Ming2,YIN Jie2,LIAO Jiu-ying1,LI Ye1,XIAN Wen1,MENG Yong2*,YU Ning-ya1,2*
(1. Key Laboratory of Sustainable Resources Processing and Advanced Materials of Hunan Province,Hunan Normal University,Changsha 410081,China;2. National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources,Hunan Normal University,Changsha 410081,China) |
Abstract:By adjusting the ratio of sulfuric acid to phosphoric acid,a series of flocculants of polymeric ferric phosphoric sulfate (PFPS)were prepared by using ferrous sulfate,a by-product of titanium pigment,as raw material. Combining with electro-catalysis oxidation treatment,the obtained flocculants were used to pre-treat landfill leachate by orthogonal design. The results showed that,under the conditions of PFPS dosage of 8‰,stirring speed of 450 r/min,stirring time of 6 min,and pH value of 7,the removal rate of chemical oxygen demand (COD),suspended solid (SS)and turbidity can reach 51.5%,86.7% and 96.8%,respectively. The successive electro-catalysis oxidation treatment (pH 9,cell voltage 16.0 V,aerate dosage 0.04 m3/h,electrode span 2.0 cm) led to complete removal of NH3-N reaching the national standard for pollution discharge (GB 16889-2008). In addition,the above electro-catalysis process further decreased COD. The results presented here indicate that pre-treating landfill leachate by using the combined coagulation with electro-catalysis oxidation process can significantly reduce the following biochemical treatment load. |
Key words:Polymeric ferric phosphoric sulfate;electro-catalysis oxidation;landfill leachate;orthogonal experiment;
coagulation |
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基金項目:國家自然科學(xué)基金資助項目(20803021),湖南師范大學(xué)青年優(yōu)秀人才培養計劃資助項目(ET201104)。
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作者簡(jiǎn)介:袁麗嬪(1988-),女,湖南郴州人,碩士研究生,主要從事廢水處理技術(shù)研究。
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聯(lián) 系 人:孟勇,副教授,博士。(E-mial:mengyong76@163.com);喻寧亞,教授,博士。(E-mial:yuningya@hotmail.com)
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收稿日期:2013-09-11
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