【多选题】
强酸性阳离子交换树脂可选择___作为再生剂。
A. 磷酸
B. 硫酸
C. 硝酸
D. 盐酸
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答案
BD
解析
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相关试题
【多选题】
硫酸作为再生剂,其优点为___。
A. 价格便宜
B. 再生效果好
C. 易于采取防腐措施
D. 易于清除树脂的铁、污染
【多选题】
盐酸作为再生剂,其缺点是___。
A. 价格高
B. 再生效果差
C. 防腐要求高
D. 不易清除树脂的铁污染
【多选题】
新树脂在使用前经过预处理可达到___的目的。
A. 去除树脂中杂质
B. 提高树脂稳定性
C. 提高树脂工作交换容量
D. 活化树脂
【多选题】
新树脂常含有___等杂质。
A. 重金属离子
B. 低聚物
C. 悬浮物
D. 油脂
【多选题】
强酸型阳树脂在使用中常常会受到___等杂质的污染。
A. 悬浮物
B. 重金属
C. 油
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【多选题】
强碱型阴树脂在使用中常常会受到___等杂质的污染。
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B. 铁的化合物
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【多选题】
若树脂受到污染,则其发生变化为___。
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B. 出水水质下降
C. 树脂结构遭到破坏
D. 交换容量降低
【多选题】
若强碱性阴树脂发生氧化,则其发生变化为___。
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B. 强碱性基团降解
C. 对硅的交换容量下降
D. 骨架断链
【多选题】
若阳树脂发生氧化,则其发生变化为___。
A. 颜色变深
B. 体积增大
C. 易碎
D. 体积交换容量降低
【多选题】
与强碱性凝胶型树脂相比较,强酸性凝胶型树脂具有___的特点。
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【多选题】
离子交换树脂一般被制成球形,具有___等优点。
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【多选题】
在一定条件下,当离子交换器树脂层高度增加时,则其___。
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下列关于水泵吸水管路布置的要求中,正确的是___。
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除碳器内部常用的填料有___。
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【多选题】
当原水碱度较高(>2mmol/L)时,则可经___处理,并经脱碳降低碱度。
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混合离子交换器应选用___材料做中排支管包套。
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【多选题】
当原水___时,做低压锅炉用水,可采用单级钠离子交换软化系统。
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【多选题】
新的离子交换树脂在保管保存的时候应该___。
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在水中,金属腐蚀的影响因素有___。
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水处理中,常用的非金属材料有___。
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与复床相比,混合床的优点是___。
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