当高锰酸钾浓度为4％、加入量为3％、氧化时间为20分钟时．所制得改性淀粉粘合剂的各项性能均较好。

When content of KMnO4 4 % , adding amount 3 % , oxide time 20 mm, the properties of modified starch adhesive were super.

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分析了以草酸钠为基准物标定高锰酸钾标准溶液浓度的反应原理，标定操作及温度、酸度、滴定速度等滴定条件对标定结果的影响。

This paper discusses the reaction principle and titrimetric operation in defining consistency of potassium permanganate titrant which sodium oxalate is regarded as the basis material.

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烧杯搅拌试验表明，水中腐殖酸对高锰酸钾预氧化工艺的剩余锰浓度有重要影响。

Jar test was conducted to evaluate the effect of humic acid on residual manganese of permanganate pre-oxidation process.

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