高品质再生水管道水泥砂浆内衬腐蚀试验研究

发布时间：2018-06-21 23:41

本文选题：管材腐蚀 + 再生水　；参考：《腐蚀科学与防护技术》2017年05期

【摘要】：利用水质稳定性指标对再生水厂出水进行腐蚀性评价,并选取碱度、硬度、Cl~-和SO_4~(2-)4种因素设计四因素三水平正交试验,结合SEM等微观形貌分析手段,研究高品质再生水管网中水泥砂浆内衬腐蚀情况及影响水质主要因素的综合作用。结果表明:该再生水厂高品质出水水质对水泥砂浆内衬具有腐蚀倾向;4种因素对水泥砂浆内衬腐蚀影响的主次顺序为:硬度Cl-碱度SO42-;显著性为:硬度和Cl~-影响较显著,碱度虽不显著但有影响,SO_4~(2-)则未对水泥砂浆内衬腐蚀表现出显著影响。此外,高碱度(HCO_3~-)且低硬度时腐蚀现象最严重。
[Abstract]:Using the water quality stability index to evaluate the corrosion of the effluent from the reclaimed water plant, four factors, such as alkalinity, hardness, Cln- and SO4-, were selected to design four factors and three levels orthogonal test, combined with SEM and other micro-morphology analysis means. The corrosion of cement mortar lining in high quality regenerative water pipe network and the comprehensive effect of main factors affecting water quality are studied. The results show that the quality of high quality effluent from this reclaimed water plant has corrosion tendency to cement mortar lining. The main and secondary factors affecting cement mortar lining corrosion are as follows: hardness Cl-alkalinity so _ 42-, and the significant effects are: hardness and Cl-n-. Although alkalinity is not significant, so _ 4 ~ (2-) has no significant effect on the corrosion of cement mortar lining. In addition, high alkalinity (HCOS3 -) and low hardness corrosion is the most serious.
【作者单位】：天津大学环境科学与工程学院;中国市政工程华北设计研究总院有限公司;
【基金】：国家自然科学基金(51478307) 高等学校博士学科点专项科研基金(20130032110032)~~
【分类号】：TB304

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