Since the beginning of this month, the long-awaited Sanitation Standard for Drinking Water has been enforced, and the water quality testing index has increased from the previous 35 items to 106 items. So, is it safer for us to drink tap water? Dr. Lan Weiguang, the father of China's nanofiltration and well-known water expert, reminded readers through this newspaper that we should not be too optimistic for the time being. Our drinking water still needs a revolution: first of all Safety is not sick, followed by health is good for the body.

So, what kind of water is safe and healthy? Lan Weiguang said that to measure whether water is safe and healthy, at least four things should be done: no sediment, rust, bacteria and viruses, and heavy metals, pesticides and hormones. Chemical pollutants such as medicines; containing mineral elements required by the human body. Today, the status quo of drinking water in China is: tap water contains more impurities, direct drinking is unsanitary; natural mineral water is relatively rare and costly.

From the maturity and stability of the technology, whether it is organic matter pollution in water, heavy metal pollution, bacteria, viruses, etc., can be completely filtered through small household water purification membrane equipment. However, there are many models of water purifiers on the market. How should consumers choose them? Lan Weiguang suggested that you can drink nanofiltration water because it is made of reverse osmosis filtration technology and is weakly acidic. The name of the nanofiltration water sounds very technical, but it is well understood: it is the drinking water filtered by nanofiltration technology. After the tap water passes through the nano-filter, it can not only remove micro-pollutions such as bacteria, viruses and organic matter in the water, but also retain minerals. Therefore, the nanofiltration water is actually household mineral water after tap water treatment, and the cost is low and economical. link

Dr. Lan Weiguang, who has been engaged in membrane technology and water treatment for more than 20 years, is a world-renowned membrane expert, water expert, father of China Nanofiltration, part-time professor of many famous universities such as National University of Singapore and Peking University.

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