Wastewater treatment works in addition to heavy metals principles: waste water treatment works in addition to heavy metals Principle One: The most fundamental reform of the production process. No or less toxic heavy metals; waste water treatment works in addition to heavy metals Principle II: is the use of reasonable process, scientific management and operation, reducing the amount of heavy metals in waste water and with the loss of volume, to minimize the amount of wastewater discharged. Heavy metal wastewater treatment process should be in place in the production site, the pharmaceutical industry wastewater, wastewater mixed with other different high concentration industrial wastewater treatment, so as not to complicate the treatment. It should not be used without further processing in addition to heavy metals directly into the city sewer, in order to avoid the expansion of heavy metal contamination. Wastewater treatment works in addition to the method of heavy metals, it can generally be divided into two categories: heavy metal waste water treatment works in addition to one: is the waste water in the state was dissolved heavy metals into an insoluble metal compounds or elements, are removed from the wastewater by precipitation and floating . The method can be applied as and precipitation, sulfide precipitation, flotation and removal, electrolysis precipitation (or floating) Act, by electrolytic wastewater treatment method; wastewater treatment works in addition to heavy metal Method two: heavy metals in the wastewater is not carried out under conditions of changing its chemical form of concentration and separation, the method can be applied to reverse osmosis, electrodialysis, evaporation and ion exchange method. These wastewater treatment alone or in combination should be used in accordance with wastewater quality, quantity and so on. Industrial waste water treatment works in industrial wastewater reuse treatment standard industrial water recycling rate is an important indicator of ecological urban construction, but also to measure the performance of local officials, "green index", has been incorporated into a mandatory standard in many industrial wastewater treatment economically developed regions. Guangzhou Fu students environmental Xingtan dyeing centralized wastewater treatment works (3600m3 / d): industrial wastewater pollution control basic ways: (1) reducing the amount of waste water discharge: wastewater diversion; save water; the reform of the production process; avoid intermittent discharge of industrial waste water . (2) reduce the concentration of pollutants in waste water: the reform of the production process, as far as possible the process does not produce pollutants; improve the structure and performance of the device; wastewater diversion; both wastewater and; recovering useful materials; discharge control system. (Wastewater concentration exceeds a predetermined stop) after wastewater discharge standard of wastewater treatment three to go: into the body of water, industrial waste water treatment plants, reuse, irrigation. (1) National Standard: "The wastewater discharge standards; GB8978-1996 Application: environmental impact assessment of water pollutant discharge management of existing units, and construction projects, the construction project completion and acceptance of environmental protection facilities designed and put into production emissions management. In accordance with the principle of national emission standards and national emission standards for industry and does not cross perform, in addition to the following industrial water, the Ziyang industrial waste, other water pollutants are the implementation of this standard. New national industrial water pollutant discharge standards of the industry, according to the scope of the implementation of appropriate national water pollutant industry standard, not the implementation of this standard. Guangzhou Fu students southern Dongguan environmental protection papermaking wastewater engineering: industrial wastewater treatment report Ziyang industrial waste _ _ rich students provided by the Guangzhou Environmental Protection Engineering Co., rich students. Environmental Protection Engineering Co., Ltd. Guangzhou Fu students (www.fushengyuan.com) strong, credible, in Guangzhou of environmental monitoring equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the rich into the brilliant students and you work for a better future!