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第 36 卷第 3 期 精 细 化 工 Vol.36, No.3
201 9 年 3 月 FINE CHEMICALS Mar. 2019
水处理技术与环境保护
源于钛白粉废料的含钛混凝剂效果及污泥特性
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付 英 ,黄 鑫 ,苏漫漫 ,狄 勇
(1. 济南大学 土木建筑学院,山东 济南 250022;2. 山东省淮河流域水利管理局规划设计院,山东 济
南 250199)
摘要:以钛白粉生产中的废酸压滤饼(WAFC)为主要原料,制得聚合钛铁(M-PTF)混凝剂。利用 SEM、XRD
和 FTIR 考察了其微观特征,并采用荧光显微镜(FM)、烧杯实验对比了 M-PTF 与聚合铝(PAC)处理生活污
水的效果及污泥特性。结果表明,M-PTF 表面是由不规则样与晶状样组成的多形态结构的立体网状聚合物组成,
表面积较大,且呈现粗糙状。当投药量均为 2 mmol/L 时,M-PTF 对有机物(耗氧量,COD Cr )去除率比 PAC
高 29%,污泥初期沉降速率(44 mL/min)远大于 PAC(2 mL/min)。M-PTF 污泥呈蓬松且紧密连接的棉花团状
态,边界清晰,含水量较小,而 PAC 形成了边界不清晰且近乎透明的松散状絮团。M-PTF 污泥体积远小于 PAC,
其含水率比 PAC 低 1.11%~2.41%,对应的污泥体积下降了 71.28%~84.38%,降低了浓缩和脱水的成本及难度。
关键词:Ti;Fe;混凝剂;微观特征;混凝性能;污泥特性;水处理技术与环境保护
中图分类号:X75; TU991.22 文献标识码:A 文章编号:1003-5214 (2019) 03-0513-07
Coagulation Performance and Sludge Properties of A Coagulant
Containing Titanium Derived from Titanium Dioxide Waste
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FU Ying , HUANG Xin , SU Man-man , DI Yong
(1. School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, Shandong, China; 2. Huaihe
River Basin Water Resources Management Bureau of Shandong Province, Jinan 250199, Shandong, China)
Abstract: A new coagulant, poly-Ti-Fe (M-PTF), was prepared using a kind of waste acid filter cake
(WAFC) which was derived from production process of titanium dioxide as raw material. The microscopic
characteristics of M-PTF were characterized by SEM, XRD and FTI. And coagulation performance and
sludge properties of M-PTF in treating a domestic wastewater were studied using Jar test and fluorescence
microscope (FM), compared with those of poly aluminum chloride (PAC). The results showed that the
surface of M-PTF was composed of irregular and crystalline-like structures, and appeared to be rough and
polymorphous networks having larger surface area. At a dosage of 2 mmol/L, M-PTF gave 29% higher
organic matter (chemical oxygen demand, COD Cr) removal than PAC, and had far greater sludge settling
rate at starting point (44 mL/min) than PAC (2 mL/min). M-PTF sludge was a sort of fluffy and
closely-connected catkins-like/cotton-like images with well-defined boundary and lower water content,
while PAC sludge almost was a sort of transparent loose flocs without well-defined boundary. In addition,
the sludge volume of M-PTF was much smaller than that of PAC, the water content of M-PTF sludge was
lower 1.11%~2.41% than that of PAC sludge, corresponding to its sludge reduction of 71.28%~84.38%
based on the sludge volume of PAC, which was largely beneficial to subsequent concentrating and
dewatering.
Key words: Ti; Fe; coagulant; microscopic characteristics; coagulation performance; sludge properties;
water treatment technology and environmental protection
Foundation items: National Natural Science Foundation of China (51808257); Shandong Province Higher
Educational Science and Technology Program (L15LG04)
收稿日期:2018-07-03; 定用日期:2018-11-21; DOI: 10.13550/j.jxhg.20180490
基金项目:国家自然科学基金(51808257);山东高校科技计划项目(L15LG04)
作者简介:付 英(1970—),女,教授,E-mail:cea_fuy@ujn.edu.cn。