How to judge the quality of drinking water?

When it comes to water, we are all too familiar with it! It is an indispensable resource in our life. As for domestic drinking water, it is directly applicable to daily life and cannot be careless. So how should we judge the quality of drinking water? One method is that it can be seen with the naked eye. If the water quality is turbid, it can be seen at a glance that it is particularly dirty. Such water quality must not be directly drinkable. For example, in the community, you will see a notice to stop the water for one day. In fact, it is washing the water tower and water pipes to ensure that everyone can use the water quality! If it is not cleaned regularly, we will find that the water released from the tap water at the beginning is full of rusty dirt, which is particularly dirty. Then another method is to monitor the water quality online, which can directly monitor the content of parameters in the water, such as: residual chlorine, E. coli, chromaticity, COD, BOD, heavy metals, etc. If there is an excess of the standard detected by the monitoring, it can be consumed after timely treatment. Domestic water is transported through layers of water supply systems. Nowadays, our policies on urban water supply are becoming more and more stringent, and water quality has been improved accordingly. The water coming out of the waterworks is transported through multi-layer pipelines for multiple water supplies. The water here is monitored and treated to ensure that all indicators have met the standards before being transported to users. As for the instruments needed for monitoring, instruments with different parameters are also different, such as: measuring COD, COD online analyzer, monitoring chromaticity; water quality chromaticity online monitor, monitoring of residual chlorine in water, total residual chlorine online analyzer , bod monitoring, BOD speed tester, etc.
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[拓展名称] include a great variety of devices with a wide range of complexity: from simple water quality monitoring device used since prehistoric times to the complex of modern mechanized water quality monitoring device.