Why is Guangdong repeated electroplating discharge standards?

Date: 2017-02-15Source: Sun Surface Chemical Author:Sun Surface Access:

       In recent years, Guangdong electroplating wastewater standards have been revised several times. At present, Guangdong Province, "electroplating water pollutant discharge standards" (DB44 / 1597-2015) (hereinafter referred to as "standard") has been formally implemented. With the development of electroplating wastewater treatment technology, the "standard" stipulates that from June 2018 onwards, non-Pearl River Delta region of the electroplating enterprises and the Pearl River Delta region existing electroplating enterprises, will implement the same stringent emission standards, namely the national "plating Pollutant discharge standards "(GB21900-2008) of the water pollutants special emission limits (referred to as the national standard table three).

       "Standard" will be implemented into the Pearl River Delta region and the Pearl River Delta region, the different regions of the new and existing projects to make different requirements. The current requirements of the Pearl River Delta region of the new project water pollutant emissions continue to implement the national standard three standards; Pearl River Delta existing projects and non-Pearl River Delta region new projects, in addition to total nickel, total copper, chemical oxygen demand, ammonia nitrogen, total phosphorus 6 water Pollutant emission targets implementation of GB standard two standards, the other 14 indicators of the implementation of water pollutants in Table 3 standards; non-Pearl River Delta existing project implementation of GB standard two standards, since June 30, 2018 from the implementation of the region new project standard limit value.

       It is understood that, in 2012, the Guangdong Provincial Environmental Protection Office has asked the Pearl River Delta region electroplating industry to build, alteration, expansion project implementation of the national standard table three standards; then, in June 2014, Guangdong electroplating wastewater discharge standards to part of Table 2 , Part of the table three of the emission standards, the appropriate relaxation of the emission standards.

       Guangdong why repeated electroplating water pollutant discharge standards? Because the enterprise is difficult to meet the national standard three standard requirements. Guangdong has thousands of electroplating enterprises, many companies try a variety of technologies, but it is difficult to achieve the standard requirements. And processing costs are relatively high. For example, in Shenzhen, Dongguan, some electroplating industrial park, the processing fee per ton of electroplating water has reached 50 yuan / ton, some small and medium-sized electroplating factory third-party operating costs are 30 yuan / ton of water.

       Electroplating wastewater is difficult to deal with why the reasons for the plating process, the use of additives and more complex ingredients, electroplating wastewater containing heavy metals, chromium, copper, nickel, lead and other ingredients, although the requirements of classification, but the actual production process , It is inevitable diversion unclear, resulting in copper, nickel, chromium, and even excessive cyanide emissions.

       Fortunately, the current Kaiping Huishun Technology Co., Ltd., Kaiping Dongqiao electroplating factory, Taishan City Group Hing electroplating factory and other enterprises to use electroplating wastewater depth of treatment process, the water quality and stability to meet the national standard three requirements, and easy to operate. If the operating specifications, even if the workshop drainage fluctuations, the problem is easy to find and solve.

       According to reports, Guangdong Fang's Environmental Protection Technology Service Co., Ltd. lasted eight years, selected more than 50 different types of electroplating factory, from people, facilities, water quality control materials, technology, environment and other aspects of all-round improvement, the use of precipitation + Floating technology, independent research and development of efficient precipitants, to solve the process facilities, governance agents, workers and other aspects of the operation of the problem, to ensure that the depth of electroplating wastewater treatment.

       The technology has been in Guangdong Kaiping, Taishan, Guangzhou and other places to achieve industrial applications, the cumulative daily handling of 2,000 tons of electroplating wastewater, 600,000 tons per year, the average operating cost of 20 yuan / ton.

Reporters learned that the depth of electroplating wastewater purification has a huge market space. At present, the country has more than 300 large-scale electroplating industrial park, electroplating enterprises more than 20,000, the annual discharge of electroplating wastewater 4 billion tons, only 20 yuan per ton of wastewater treatment, the annual electroplating wastewater treatment market amounted to 80 billion yuan. Another circuit board waste water of about 1 billion tons to the price of 8 yuan / ton ~ 10 yuan / ton, there are about 100 billion management market.