The business club reported on September 21 that Jingko Energy had explained the pollution problem of its Haining plant in Zhejiang Province and confirmed that it had completely shut down its 1.2Gw battery production line. The outbreak of Jinko Energy's pollution incidents has aroused concern for the pollution of photovoltaic companies. Some photovoltaic industry, especially polysilicon production and processing, such as serious environmental pollution, energy consumption is relatively large, while the polysilicon industry has repeated construction, disorderly launch and other issues, in the company profits, while not at the expense of the environment. In the "Polysilicon Industry Access Requirements" jointly issued by the three ministries and commissions, a number of "environmental protection" access thresholds including wastewater, waste gas, and solid waste disposal have been listed. The environmental protection storm will help reduce pollution. Guide the healthy development of the industry.

According to reports, on September 15th and 16th, some people gathered at the entrance of Jinke Energy Co., Ltd., a factory located in Hongxiao Village, Yuanhua Town, Haining, Zhejiang Province, and the company was involved in the phenomenon of dead fish in local rivers. Discussing statement." According to the preliminary findings of the Haining Environmental Protection Agency, JinkoSolar’s ​​disposal of solid waste during the production of silicon wafers was not standardized, and some of the pollutants rushed into the river after heavy rains, resulting in severe fluoride levels in the water and a large number of fish deaths. On September 19, JinkoSolar held an emergency press conference to explain the pollution problems at its Haining plant and confirmed that it had completely shut down the 1.2Gw battery production line. JinkoSolar is a manufacturer of photovoltaic products mainly producing solar wafers.

Pollution in Haining, Zhejiang Province is not the first occurrence. Similar pollution incidents have occurred this year. According to media reports, on March 12, three men transported 25 tons of silicon tetrachloride from Gansu County's Suining County Chemical Plant to Ganyu County, Liaocheng City, Shandong Province and discharged into the river. Around May 10, a certain silicon material from Xuzhou, Jiangsu Province was used. About 2,000 tons of silicon tetrachloride was stolen from the company into the ponds and irrigation ditches in rural Heze Shan county.

Some photovoltaic industries, especially polysilicon production and processing, have serious environmental pollution and consume relatively large amounts of energy. The entire photovoltaic industry chain mainly includes four related industries: polysilicon raw materials, solar cells, integrated components, and power generation engineering. Polysilicon and solar cells are among the most important components. At present, the commonly used polysilicon production technology in China is the “modified Siemens method”. This process also forms a large number of chlorosilane by-products such as silicon tetrachloride and hydrogen chloride. In this process, if the recycling process is not mature, silicon tetrachloride, hydrogen chloride, ** and other harmful substances are likely to overflow.

In recent years, with the strong support of governments in various countries, solar photovoltaic power generation has achieved rapid development, which has also led to the development of the entire photovoltaic industry. According to statistics, in 2007, the global installed capacity of solar photovoltaic was about 6.5 GW, of which European countries installed a total of 4.75 GW, which accounted for 74% of the total installed capacity of solar photovoltaics in the world (of which Germany, Italy, and the Czech Republic had installed capacity of 4.07 GW). In 2009, the installed capacity of solar photovoltaics in the world exceeded 20 GW. In 2010, the installed capacity of solar photovoltaics in the world may reach 30 GW. The rapid increase in demand for solar photovoltaic installed capacity has accelerated the production of photovoltaic solar cell production. According to statistics, from 2006 to 2009, the average annual growth rate of solar photovoltaic cell production was as high as 60%. Due to the impact of the financial crisis in 2008, the growth rate of photovoltaic cell production slowed down in the first two quarters of 2009, but with the recovery of market demand in the second half of 2009, the annual solar cell output reached about 10.5 in 2009. GW, an increase of 42.5% over 2008. The world's photovoltaic solar cell capacity also increased from about 2.6 GW in 2007 to about 15 GW in 2010.

Under the background of the surge in international photovoltaic solar energy demand, due to China's support in industrial policies, human resources have advantages, and the development of photovoltaic industry, especially polysilicon production and processing and other environmental pollution in the production of links to pay a low cost of the social environment and many other aspects Under the stimulation of factors, China's photovoltaic solar energy industry has developed rapidly in recent years. The upstream polysilicon production capacity was only about 5,800 tons in 2007, but in 2007-2009, China's polysilicon processing capacity mostly required 3-5 million tons of polysilicon, and the external dependence of polysilicon was more than 50%. By 2010, China’s polysilicon The production capacity reached 30,000 tons, and the polysilicon self-sufficiency rate reached 80%. Meanwhile, China's polysilicon vision construction planning capacity reached 74.25 million tons. Compared to the global total of about 100,000 tons of polysilicon demand, the Chinese polysilicon industry has now become serious. Overcapacity situation.

Faced with the current status of the polysilicon industry, the Ministry of Environmental Protection's "2011 national pollution prevention work points," polysilicon and lead-zinc, lead-acid batteries were included in this year's key areas of heavy metal pollution access. The three ministries jointly issued the "Polysilicon Industry Access Requirements" and listed a number of "environmental" access thresholds including waste water, waste gas, and solid waste disposal. The regulations stipulate that the recovery and utilization of silicon tetrachloride, hydrogen chloride, and hydrogen in the reduction tail gas shall be no less than 98.5%, 99%, and 99%; and the storage of general industrial solid waste shall comply with the "General Pollution Control Standard for Industrial Solid Waste Storage and Disposal Sites" ( GB18599) shall strictly implement the relevant regulations on hazardous wastes for the production of silicon tetrachloride and other hazardous wastes. Solar grade polysilicon reduction power consumption is less than 60 kWh/kg by the end of 2011.

In accordance with the strict implementation of the “Polysilicon Industry Access Requirements”, it may cause a significant increase in costs for smaller companies, but in the long run, it will help reduce pollution and guide the healthy development of the industry. It is helpful to eliminate backward production capacity, reduce backward enterprises with high energy consumption, and large-scale enterprises with obvious cost advantages will obviously benefit. At present, the A-share market involves a total of polysilicon projects such as Leshan Power, Tianwei Power Conversion, CSG A, Tongwei, Aerospace Machinery, Chuantou Energy, Jiangsu Sunshine, and Intelli.