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Experiment study on the application of scale and corrosion inhibitor in the reclaimed water recycling cooling system
Pages: 160-164
Year: Issue:  11
Journal: Water & Wastewater Engineering

Keyword:  再生水循环冷却水不锈钢阻垢缓蚀剂;
Abstract: 针对再生水回用于循环冷却水系统易引起结垢和腐蚀问题,采用碳酸钙沉积法和旋转挂片法考察了典型阻垢缓蚀剂的性能,通过试验筛选出一种针对不锈钢材质的高效、环保的复合阻垢缓蚀剂HT,并通过扫描电镜和能谱分析探讨了HT的阻垢和缓蚀机理.试验结果表明:再生水浓缩倍数为3、HT有效浓度为31 mg/L时,阻垢率为98%,不锈钢腐蚀速率为0.000 3 mm/a,缓蚀率为91.3%,阻垢机理主要为晶格畸变、螯合增溶和电荷分散作用,缓蚀机理主要为沉淀膜和吸附膜共存的阴极反应抑制作用.
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