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[Group 11] Japan's overcoming severe pollution in the period of 1950s-1970s and experiences for V

16 in 1963 after scientists had identified mercury

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In 1963, after scientists had identified mercury poison as the cause of the accident mentioned above, the government has banned fishing in the bay and ordered Chisso to remove pollutants from waste plants. The company was soon stopped using mercury in their industrial processes. From 1974 to 1990, the Kumamoto Province has made dredging and landfill project to clean the amount of methyl mercury in Minamata Bay. The cost for this project is 48 billion yen, in which Chisso suffered 30.5 billion yen. Forty years has passed and the Minamata Bay is not polluted anymore methyl mercury, the plants pouring mercury contained wastewater into the sea have long closed and the bottom of the bay contained MeHg was also wiped Chisso is still being responsible for paying the cost of treatment for patients with Minamata and the damages to their lives. It is important for us to recognize that such mistakes from Chisso in Minamata will not be allowed to happen in anywhere anymore. Experience or environment protection in Viet Nam The issue of Vedan company discharging untreated wastewater into Thi Vai River Vedan company’s head office is in Phuoc Thai (Long Thanh - Dong Nai), it has officially operated since 1993 in the manufacturing sector such as Monosodium Glutamate, Lysine, starch, sugar, sodium (NaOH), acid (HCl), animal feed, fertilizer and some biotechnology products ... According to experts, in the process of producing these products, waste water of the company contains many environmental contaminants, but the most worrying one is cyanure. Stretch of the river where Vedan stands is the most polluting area in Thi Vai River. It has been well known that Thi Vai River is seriously polluted by organic matter, nutrients, suspended solids, odor, bacteria and especially the toxic heavy metals. Yet, authorities also discovered that some industrial facilities also discharge 17
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cyanide - a toxic affected environment and public health – into the Thi Vai River with the levels exceeding permitted standard one dozens of times. In 9/2008, the survey showed that Vedan had installed and operated discharging untreated systems for 14 years. Vedan was estimated to discharge about 5,000 m3/day wastewater into the river. Waste from companies has caused severe environmental pollution in the 10 -11 km Thi Vai River, killing a lot of fish and affecting thousands of households. In the ecology of flora and fauna in the area must be properly concerned. A lot of shrimp ponds have been abandoned due to water pollution. A warning should be seriously considered that many salt fields and shrimp farms were producing in Thi Vai River downstream where is also affected by water pollution. After contamination, total fines and compensation Vedan had to pay is 267.5 million and more than more than 127 billion for environmental protection costs The lessons from Minatama in Japan The problem of Thi Vai River is much reminiscent of the story of Minamata Bay in Japan several decades ago about impact of economic development on the environment.
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