本文介绍我使用净水器净化自来水，通过观察现象，测定DO,COD等水质指

This article introduces me to use a water purifier to purify tap water. By observing the phenomenon, measuring DO, COD and other water quality indicators, it can be found that the water purifier can effectively remove impurities in the water and can effectively purify the tap water without polluting the environment. , To protect the drinking water health of residents, improve the utilization rate of water resources, to a certain extent, help residents' drinking water safety.

This paper introduces that I use the water purifier to purify tap water. By observing the phenomenon and measuring the water quality indexes such as do and COD, it can be found that the water purifier can effectively remove impurities in the water, play an effective role in purifying tap water, will not pollute the environment, ensure the health of residents' drinking water and improve the utilization rate of water resources. To a certain extent, It is conducive to residents' drinking water safety.

This paper introduces that I use water purifier to purify tap water. By observing the phenomenon and measuring the water quality indexes such as DO and COD, the comparison results show that the water purifier can effectively remove impurities in water, effectively purify tap water without polluting the environment, ensure the residents' drinking water health and improve the utilization rate of water resources. To a certain extent, it is beneficial to the residents' drinking water safety.