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| 序批式工艺制备生物聚合硫酸铁混凝剂 | |
| 引用本文： | 任丹,刘海宁,关晓辉,张凯松.序批式工艺制备生物聚合硫酸铁混凝剂[J].环境工程学报,2012,6(7):2328-2332. |
| 作者姓名： | 任丹 刘海宁 关晓辉 张凯松 |
| 作者单位： | 1. 中国科学院城市环境研究所,中国科学院城市环境与健康重点实验室,厦门361021 中国科学院研究生院,北京100049 2. 中国科学院城市环境研究所,中国科学院城市环境与健康重点实验室,厦门361021 3. 东北电力大学化学工程学院,吉林,132012 |
| 基金项目： | 科技部国际科技合作项目（2009DFB90120） |
| 摘 要： | 本实验研究了序批式工艺(SBR)制备生物聚合铁混凝剂过程中主要影响因素(接种微生物浓度、起始亚铁离子浓度)对亚铁离子氧化速率的影响。研究结果显示,在受试实验条件内,较高的接种微生物浓度和较低的起始Fe2+浓度有利于Fe2+氧化,Fe2+浓度变化与反应时间呈线性关系;当起始Fe2+浓度为20 g/L,接种细菌浓度约为8×108个/mL时,Fe2+氧化速率最大,最大值可达到0.375 g/(L.h)。在反应过程中生成了少量黄色沉淀,经傅里叶变换红外光谱分析后确定其主要成分为黄钾铁矾。合成的生物聚合硫酸铁经过干化后各项指标均符合《水处理剂聚合硫酸铁》(GB 14591-2006)之规定。对比实验表明,自制生物聚合硫酸铁海水混凝时性能优于实验所选品牌的商业产品。 |
| 关 键 词： | 生物聚合硫酸铁 Fe2+氧化速率 接种微生物浓度 混凝 |
Production of bio-polymeric ferric sulfate coagulant by sequencing batch reactor |
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| Ren Dan,Liu Haining,Guan Xiaohui and Zhang Kaisong.Production of bio-polymeric ferric sulfate coagulant by sequencing batch reactor[J].Techniques and Equipment for Environmental Pollution Control,2012,6(7):2328-2332. | |
| Authors: | Ren Dan Liu Haining Guan Xiaohui and Zhang Kaisong |
| Institution: | 1(1.Key Laboratory of Urban Environment,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China; 2.Graduate School of Chinese Academy of Sciences,Beijing 100049,China; 3.College of Chemical Engineering,Northeast Dianli University,Jilin 132012,China) |
| Abstract: | Relationship between biomass,Fe2+ concentration and Fe2+ oxidation rate in sequencing batch reactor(SBR)was investigated to produce bio-polymeric ferric sulfate coagulant(BPFS).Results revealed that larger initial inoculums concentration and lower initial ferrous ion concentration induced the higher ferrous ion oxidization rate under the experimental conditions.There existed a linear relationship between the remainder Fe2+ concentration and reacting time.The optimal conditions for the bacteria to get the highest ferrous oxidation rate may be with the Fe2+ concentration of 20 g/L and the initial inoculums concentration of 8×108/mL.Jarosite was synthesized during the ferrous biological oxidation process.After being dried,the essential properties of BPFS completely met PRC’s state standard.BPFS’s performance in seawater coagulating compared with a commercial product were investigated,results showed that BPFS performed better than chosen commercial product in seawater turbidity removal. |
| Keywords: | Fe^2+bio-polymeric ferric sulfate oxidation rate inoculums concentration coagulation |
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