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nature : industrial and mining enterprises from the "emissions", "waste water", "waste" the name. Nature has not only been understanding of the material, should not be used without the material, the "three wastes" can "in the wrong place of raw materials." For example, the quantities of waste sulfuric acid manufactured ferrous sulfate, slack can be used to produce cement, refractories. The so-called "emissions", "waste water", "waste" recycling is not only material wealth, but also improve sanitation. My right harmful emissions and concentrations of emissions, the volume of wastewater allowed the emissions to water, water and the resort area, fisheries and agricultural use of harmful substances indicators have specific requirements, and, mercury, cadmium, arsenic, hexavalent chromium, lead cyanide, phosphorus , and other soluble toxic "waste" is dedicated to waterproof, impermeable measures storage places, not Jimmy into the ground and into the surface water body.
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