固体生物聚合硫酸铁的制备及其絮凝性能

doi:10.16085/j.issn.1000-6613.2018-1503

化工进展 ›› 2019, Vol. 38 ›› Issue (05): 2434-2440.DOI: 10.16085/j.issn.1000-6613.2018-1503

固体生物聚合硫酸铁的制备及其絮凝性能

徐小惠^1,²(),鲁敏¹,杨柳¹,王悦³,刘雅琪⁴,关晓辉¹()

1. 东北电力大学化学工程学院，吉林吉林 132012
2. 东北大学资源与土木工程学院，辽宁沈阳 110819
3. 广东省特种设备检测研究院珠海检测院，广东珠海 519000
4. 内蒙古国华呼伦贝尔发电有限公司，内蒙古呼伦贝尔 021025

收稿日期:2018-07-22 修回日期:2018-11-03 出版日期:2019-05-05 发布日期:2019-05-05
通讯作者: 关晓辉
作者简介:<named-content content-type="corresp-name">徐小惠</named-content>（1986—），女，博士研究生，研究方向为水处理。E-mail：<email>xuxiaohui06@126.com</email>。
基金资助:
吉林省科技发展计划(20130206059GX)

Preparation of solid biopolymerized ferric sulfate and its flocculation performance

Xiaohui XU^1,²(),Min LU¹,Liu YANG¹,Yue WANG³,Yaqi LIU⁴,Xiaohui GUAN¹()

1. School of Chemical Engineering, Northeast Electric Power University, Jilin 132012, Jilin, China
2. School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, Liaoning, China
3. Guangdong Institute of Special Equipment Testing Zhuhai Inspection Institute, Zhuhai 519000, Guangdong, China
4. Inner Mongolia Guohua Hulunbeier Power Generation Co. , Ltd. ，Hulun Buir 021025, Inner Mongolia, China

Received:2018-07-22 Revised:2018-11-03 Online:2019-05-05 Published:2019-05-05
Contact: Xiaohui GUAN

摘要/Abstract

摘要：

以工业FeSO₄·7H₂O为原料，制备生物聚合硫酸铁（bio-polymeric ferric sulfate，BPFS），采用减压蒸发技术制备固体生物聚合硫酸铁（solid bio-polymeric ferric sulfate，SBPFS），以松花江水为处理对象研究其絮凝性。研究内容包括固化温度、固化时间和添加剂的确定，通过扫描电子显微镜（SEM）、X射线衍射（XRD）、红外光谱分析（FTIR）和X射线光电子能谱分析（XPS）对其结构进行表征。研究结果表明：当固化温度55℃、固化时间4h、添加剂为KAl(SO₄)₂时，絮凝剂的絮凝性强。SEM表明产物质地膨松、比表面积大；XRD表明产物属于非晶态物质，固体粉末颗粒没有特定的形状和结构；FTIR表明了产物的结构；XPS表明产品的主要成分。将制备的BPFS和SBPFS用于处理松花江水时，SBPFS对松花江水浊度和COD_Mn的去除率略优于BPFS，除浊率和COD_Mn去除率分别可达96%和80%以上，絮凝效果佳。

关键词: 聚合硫酸铁, 制备, 陶瓷拉西环, 减压蒸发, 固化

Abstract:

Industrial by-product ferrous sulfate heptahydrate (FeSO₄·7H₂O) was used to prepare bio-polymeric ferric sulfate (BPFS). Solid bio-polymeric ferric sulfate (SBPFS) was produced by decompression evaporation, which was applied to the removal of the water of Songhua River. The study included the curing temperature, the curing time and the determination of additives. The structures of the SBPFS were definitely characterized by scanning electron microscopy (SEM), infrared X-ray diffraction (XRD), spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The results demonstrated that the flocculating agent had strong flocculation when the curing temperature was 55℃, the curing time was 4h, and the additive was KAl(SO₄)₂. The morphology of the SBPFS was observed with a scanning electron microscope, which showed that the material was bulky and the specific surface area was large; SBPFS was observed with X-ray diffraction which showed that the product was amorphous, and the solid powder particles had no specific shapes and structures; the structure and the main component of the SBPFS were demonstrated by spectroscopy and X-ray photoelectron spectroscopy. When the prepared BPFS and SBPFS were used to dispose Songhua River water, thee removal rate of turbidity and COD_Mn of SBPFS to Songhua River water was slightly better than that of BPFS. The removal efficiencies of turbidity and COD_Mn by SBPFS could reach 96% and 80%, respectively.

Key words: polymeric ferric sulfate, preparation, ceramic raschig ring, decompression evaporation, curing

中图分类号:

X703.1

徐小惠, 鲁敏, 杨柳, 王悦, 刘雅琪, 关晓辉. 固体生物聚合硫酸铁的制备及其絮凝性能[J]. 化工进展, 2019, 38(05): 2434-2440.

Xiaohui XU, Min LU, Liu YANG, Yue WANG, Yaqi LIU, Xiaohui GUAN. Preparation of solid biopolymerized ferric sulfate and its flocculation performance[J]. Chemical Industry and Engineering Progress, 2019, 38(05): 2434-2440.

图/表 13

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固化温度/℃	产品外观	溶解性
50	软，深黄	不易
55	脆，黄色	易溶
60	脆，黄色	易溶
65	脆，深黄	易溶
70	硬，发黑	不易

固化温度/℃	产品外观	溶解性
50	软，深黄	不易
55	脆，黄色	易溶
60	脆，黄色	易溶
65	脆，深黄	易溶
70	硬，发黑	不易

固化时间/h	产品外观	溶解性
2	软黏，深黄	不易
3	软黏，深黄	不易
4	脆，浅黄	易溶
5	脆，黄色	易溶

固化时间/h	产品外观	溶解性
2	软黏，深黄	不易
3	软黏，深黄	不易
4	脆，浅黄	易溶
5	脆，黄色	易溶

添加剂	投加比例(m_TFe:m_膨化剂)	固化时间/h	还原性物质质量分数 (以Fe²⁺含量计)/%	全铁质量分数/%	盐基度/%	产品外观	溶解性
—	—	5	0.062	22.46	17.86	脆，黄色	易溶
KAl(SO₄)₂	10∶1	3	0.016	20.33	19.23	脆，浅黄	易溶
SPFS	10∶1	4	0.034	21.70	16.78	脆，深黄	易溶
混合	10∶1	4	0.028	21.18	16.28	脆，深黄	易溶

固体生物聚合硫酸铁的制备及其絮凝性能

Preparation of solid biopolymerized ferric sulfate and its flocculation performance

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图/表 13

参考文献 35

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实验号	A	空列	B	C	盐基度/%	总铁/%
1	1	1	1	1	17.02	21.42
2	1	2	2	2	18.58	20.94
3	1	3	3	3	16.72	21.15
4	2	1	2	3	16.21	21.32
5	2	2	3	1	16.54	21.34
6	2	3	1	2	19.23	21.56
7	3	1	3	2	18.30	20.48
8	3	2	1	3	16.13	21.15
9	3	3	2	1	16.47	21.15
均值k₁	17.44	17.18	17.46	16.68
均值k₂	17.33	17.08	17.09	18.70
均值k₃	16.97	17.47	17.19	16.35
极差R	0.47	0.39	0.37	2.35
因素主次	C添加剂＞A固化温度＞B固化时间
最佳水平	C₂A₁B₁

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水平	A/℃	B/h	C
1	55	4	不添加
2	60	5	KAl(SO₄)₂
3	65	6	SPFS粉末

水平	A/℃	B/h	C
1	55	4	不添加
2	60	5	KAl(SO₄)₂
3	65	6	SPFS粉末