一种处理高硬度水的双层颗粒式药剂研发与效果分析  

Development and effect analysis of a double-layer granular reagent for treating high hardness water

作　　者：胡家玮[1] 刘岩 王聪 刘美婧 HU Jiawei;LIU Yan;WANG Cong;LIU Meijing(School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,Gansu,China)

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《化工进展》2025年第3期1695-1705,共11页Chemical Industry and Engineering Progress

基　　金：甘肃省自然科学基金(20JR5RA476)。

摘　　要：以Na_(2)CO_(3)、NaOH、改性聚乙烯醇(PVA1788)、PAC、Na_(2)SiO_(3)为原材料,研发一种水溶性双层颗粒式水处理药剂,用于处理高硬度水。其中的改性PVA1788是通过加成反应制备的,以增强其水溶性,并利用扫描电镜、X射线光电子能谱仪、傅里叶红外光谱仪等对改性PVA1788进行微观分析。最后对药剂去除效果进行检验,并考察储存时间、反应水温、pH、反应时间对药剂的影响。研究结果表明,Na_(2)CO_(3)、NaOH可有效去除水中硬度,改性PVA1788具有水溶性有利于提高药剂的溶解性能;双层颗粒式药剂受环境因素影响较小,使用条件宽泛,储存5~30天后使用仍然有效,硬度去除率可稳定达到92%~94%。研发的双层颗粒式药剂内外层组分可分步释放,改变了水处理工艺中药剂需分步投加的传统方式,缩短了水处理工艺流程。Using Na_(2)CO_(3),NaOH,modified polyvinyl alcohol(PVA1788),PAC,and Na_(2)SiO_(3)as raw materials,a water-soluble double-layer granular water treatment agent was developed for treating high hardness water.The modified PVA1788 was prepared through an addition reaction to enhance its water solubility.Microscopic analysis of the modified PVA1788 was conducted using scanning electron microscopy,X-ray photoelectron spectrometry,and Fourier infrared spectrometry.Subsequently,the removal efficiency of the reagent was assessed,and the impacts of storage time,reaction water temperature,pH,and reaction time on the reagent were explored.The outcomes demonstrated that Na_(2)CO_(3)and NaOH effectively eliminated water hardness,while the modified PVA1788 exhibited improved water solubility,enhancing the reagent’s overall solubility.The double-layer granular agent was resilient to environmental variations,exhibiting versatility in usage.Even after storage for 5—30 days post-use,it remained effective,maintaining a stable hardness removal efficiency of 92%—94%.The two-layer granular reagent released its inner and outer layer components sequentially,revolutionizing the conventional step-by-step addition method in water treatment processes and streamlining the treatment procedure.

关 键 词：高硬度水 水处理药剂 聚乙烯醇 水溶性材料 水处理工艺 

分 类 号：X52[环境科学与工程—环境工程]