高锰酸盐预氧化工艺水中总锰浓度变化规律与控制方法

通过烧杯试验研究了高锰酸盐预氧化工艺水中剩余总锰浓度的影响因素 ,结果表明 ,高锰酸钾在氧化过程中被还原为胶体二氧化锰 ,并进一步被混凝剂脱稳 ,形成密实絮体通过沉淀与过滤分离。在通常给水处理条件与高锰酸盐投量范围内 ,可以保证较低的滤后水总锰浓度 ,满足国家生活饮用水卫生标准。当原水pH在中性范围时出水总锰浓度均很低 ,pH升高有利于降低出水总锰浓度

Study on Mn residual and control in permanganate pre-oxidation process

Factors affecting the total residual manganese concentration in the settled and filtered waters from permanganate pre-oxidation process were studied by jar tests. The results show that during the oxidation permanganate is deoxidized to manganese dioxide and instabilities. A relatively lower residual manganese concentration of the treated water (lower than national water quality standard for drinking water) was observed under an optimum coagulation at normal permanganate dosages. The pH of the raw water has obvious influence on residual total manganese of the settled and filtered waters. Lower residual manganese concentrations can be achieved under neutral or higher pH conditions.