The pace of industrialization and urbanization is quite fast and the increase of the population increasingly heavy pressure lies with the water resources in the territories. Water environment in many municipalities, industrial parks and villages increasingly contaminated by waste water, waste gas and solid waste. in large cities, hundreds of industrial production are causing environmental pollution due to water works and waste processing equipment. Water pollution caused by industrial production is very heavy. For example, in the textile industry, the pulp and paper industry, waste water usually has a Ph averaging from 9-11; index of chemical oxygen demand (BOD), chemical oxygen demand (COD) can be up to 2,500 mg/1 and 700mg/1; suspended solids ... many times the allowable limit.Waste water content of this industry contains cyanide (CN-) pass to 84 times, H2S exceed 4.2 times, concentrations of NH3 exceeded 84 times the standard should have the heavily polluting the surface water sources in the region. The level of water pollution in the industrial zones, export processing zones, industrial focus is huge.In industrial clusters took part in Ho Chi Minh City, Wage, water supplies contaminated by sewage, industrial waste water with total estimated 500,000 m3/day from the paper mills, dyeing, weaving, washing powder. in the city of Taiyuan, an industrial waste water discharged from the basis of paper manufacturing, iron and steel, metallurgy, coal mining; of the total volume of waste water of shallow season the city of Taiyuan constitute about 15% of the river flow; waste water from paper production has a Ph from 8.4-9 and NH4 concentrations is 4 mg/1, high organic matter content, wastewater odors, Brown ...Survey some villages steel, cast bronze, aluminum, lead, paper, textite in BAC Ninh province shows the amount of water discharged thousands m3/day of untreated, polluting the water resources and environment in the region.
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