How to discharge dioxins?

1. Definition of dioxin: It is a colorless, odorless and highly toxic fat-soluble substance. Dioxin is actually short for dioxin. It refers to two organic compounds with similar structures and properties, which contain many homologues or isomers. Dioxins include 2 10 compounds, which are very stable, have a high melting point, are extremely insoluble in water, and can be dissolved in most organic solvents. They are colorless and odorless fat-soluble substances, so they are very easy to accumulate in organisms and cause serious harm to human body.

2. Control methods of dioxins

Sun Yat-sen University in Taiwan and Zheng Xiu University of Science and Technology in Kaohsiung jointly found that a bacterium can "eat" the toxic dioxin in the dioxin-contaminated soil samples of Anshun factory in Tainan, which will be the most economical and effective method for the remediation of dioxin-contaminated land.

According to media reports in Taiwan Province Province, Anshun Factory of China Petrochemical Industry Company in Taiwan Province Province, located in Annan District of Tainan City, was closed on 1982, but the land and rivers nearby were seriously polluted by dioxins and mercury, which was regarded as the most toxic block in the world by environmental groups. High concentration of dioxins will affect human health. The soil contaminated by dioxin in Anshun factory has been sealed for five or six years, and there is no effective and economical fundamental remediation method so far.

Kaohsiung University of Science and Technology has detected hundreds of bacteria from polluted soil. The Institute of Chemistry of Sun Yat-sen University cooperated in the research, and screened out the strains with dioxin as food source from hundreds of strains in soil samples, and found that they "ate quickly".

Zhang Jianguo Ping, director of the Center for Ultra-micro Analysis and Technology of HKUST, said on June 5438+08 that such bacteria are "natural bane of dioxins". "As long as it is moved into the soil contaminated by dioxins, after a period of time, bacteria can" eat "dioxins without removing the soil, which will save as much as NT$10 billion to NT$ 20 billion in remediation funds."

If self-purification can be used to treat land polluted by fast-growing bacteria in nature, it will be the most cost-effective remediation method. "In the past, environmental testing units and academic units mainly detected pollutants and never contacted microbial communities." Zhang Jianguo Ping said that Zheng Xiu and Zhongshan were very excited about this important discovery, calling it "a very exciting discovery".

Zhang Jianguo Ping refused to disclose the name of the bacterium, saying only that "how to capture this bacterium from soil is a difficult technology". He said that last week, he cooperated with the Institute of Biochemistry of Sun Yat-sen University to apply for a patent from the Ministry of Economic Affairs of Taiwan Province, and the research team will also publish the research results in internationally renowned scientific journals for the academic community to share this new discovery.