Water pollution is a hot topic in Vietnam. According to unofficial statistics, up to 9,000 people die and find 100,000 people are infected with cancer each year due to the use of polluted water. Although all levels and departments have made efforts to call for and implement measures to protect the environment, protect water sources, ... but not enough to improve the serious water pollution situation as at present. .

By the end of 2018, according to the survey results: Every year Vietnam consumes more than 100,000 tons of plant protection chemicals and more than 23 million tons of household waste, more than 7 million tons of industrial solids and up to 630,000 tons of waste. hazardous to the environment. It is estimated that out of a total of 183 industrial parks, up to 60% of units do not have a centralized wastewater treatment system. In large urban areas, only about 60% of solid waste is collected but the infrastructure for drainage and waste water treatment does not meet the demand for environmental protection.

Meanwhile, all wastes are cleaning chemicals, dye chemicals, grease, etc., which have not been treated, and are discharged into natural rivers and lakes, seriously affecting people's lives. Therefore, environmental pollution has been a research issue of interest in universities in order to find effective remedies, improve the environment, and bring a healthy life to the people.

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Talking about pollution, we certainly know that there are many forms of pollution such as: visual pollution, soil pollution, ... many kinds of pollution, various types of pollution. pollution is more and more. But I assure you that the pollution we can see anywhere and it is very common is water pollution.
 Where is the cause of water pollution? It is due to human influence on the environment. Currently there are many people who are less aware of environmental protection. They only know their "BENEFITS" and disregard the laws of the state.they throw their rubbish indiscriminately into rivers, lakes, and the sea without them knowing that human life and life are seriously threatened by drinking, bathing themselves in these dirty rivers, lakes and seas. Other pollution which leads to water pollution.we should to protect the environment by propagating people, always cleaning up dirty places, not littering, conscious of environmental protection.
    In short, we must know the consciousness, respect and protect the life of mankind, must know the protection of the environment and nature in order to have an earth "non-pollution" in future. we need to protect the environment by propagating people, always cleaning up dirty places, not littering, conscious of environmental protection.