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锰广泛存在于天然水体中,含量过高对人体健康存在诸多不良影响。将膜分离与电感耦合等离子体质谱分析技术相结合,深入探讨了传统饮用水净化工艺对溶解态和悬浮态锰的去除规律。结果表明,随着水深的增加,水源水体中的总锰呈上升趋势,溶解态锰则无明显变化。在各处理单元中,混凝-沉淀过程对颗粒态锰的脱稳沉淀和部分溶解态锰的吸附去除起着主要作用,砂滤对溶解态锰的氧化去除可以忽略;当原水中的总锰含量在0.28 mg·L-1时,处理出水中的锰含量在0.21 mg·L-1,平均去除率仅为25%。进行高锰酸盐预氧化,可有效提升总锰在后续各净化单元中的去除效率,处理出水可满足居民饮用水水质标准。
Manganese is widely found in natural water. Too high levels of manganese have many adverse effects on human health. The membrane separation and inductively coupled plasma mass spectrometry were combined to deeply discuss the removal rules of dissolved and suspended manganese from the traditional drinking water purification process. The results showed that with the increase of water depth, the total manganese in water of source water was on the rise, while the dissolved manganese did not change obviously. In each treatment unit, the coagulation-precipitation process plays a major role in the destabilization of particulate manganese and the adsorption and removal of partially dissolved manganese. The oxidation and removal of dissolved manganese by sand filtration can be neglected. When total manganese When the content was 0.28 mg · L-1, the content of manganese in the treated effluent was 0.21 mg · L-1, and the average removal rate was only 25%. The permanganate pre-oxidation can effectively improve the removal efficiency of total manganese in the subsequent purification units, and the treated effluent can meet the drinking water quality standards of residents.