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On the eve of New Year's Day, Vice Minister of Environmental Protection Lienjun Zhang in the investigation of pollution prevention and control work in the Songhua River Basin in Jilin Province stressed that industrial pollution prevention and control work needs to be further strengthened, we must strictly implement responsibilities, establish accountability systems, improve environmental risk prevention capabilities. Wu Xiaoqing, the former deputy minister of the Ministry of Environmental Protection, once pointed out that one of the four tasks that we must focus on in the near future is to strengthen the protection of drinking water sources and provide security for water supply. Experts believe that this has sent an early warning to petrochemical companies that are located in drinking water sources: either relocate or speed up the upgrading of sewage treatment plants.
Due to historical reasons, many domestic petrochemical enterprises have obvious problems in safety and environmental protection. According to the Ministry of Environmental Protection, more than 20,000 petrochemical companies are mostly located on the water's edge, of which 10,000 are in the Yangtze River Basin, 4,000 are in the Yellow River Basin, and 2,000 are in drinking water sources and densely populated areas. The general location of these chemical companies is not suitable. Once this problem occurs, the consequences will be disastrous. Last year, the incidents such as phenol pollution from drinking water sources in Yancheng, Jiangsu, and heavy metal cadmium-contaminated water sources from Xiangyang Chemical Plant in Hunan Liuyang threatened the safety of people’s drinking water sources. This event has caused concern both at home and abroad. The Ministry of Environmental Protection has issued “About strengthening drinking waterâ€. "Survey on Water Safety Protection Work" to strengthen the supervision of drinking water sources.
Professor Zhang Quanxing from the School of Environmental Studies of Nanjing University introduced that chemical companies use large amounts of drainage and sewage has direct and indirect impacts on the hazards of drinking water sources. For example, in 2009 Yancheng Standard New Chemical Company stole phenol-contaminated wastewater incidents, which was the direct pollution caused by excessive levels of water poisons. . The other type is indirect pollution. For example, the blue algae in Taihu Lake cause water non-drinkable events. The water contains a small amount of total nitrogen and total phosphorus. Although the standard concentration of drinking water is not exceeded, this kind of nutrient-rich water will promote the rapid reproduction of cyanobacteria. Algae Secretion of toxins makes water unusable. Immediately after the accident occurred, the hazards immediately appeared. However, indirect hazards occurred from time to time, but the hazards appeared slowly. The emissions of individual companies were not enough to cause harm. Most of the companies paid insufficient attention to them.
Experts pointed out that no matter how direct or indirect the hazards are, they cannot be overcome in the treatment of pollution. There can be no luck. Once a problem arises, it will not only have a serious impact on the company itself, but also other chemical companies will suffer from similar problems. On February 20 last year, the Yancheng Standard New Chemical Company stole sewage, causing concern for the water pollution incident in the Yancheng District. Afterwards, Yancheng painstakingly and painstakingly proposed to dismantle the surrounding chemical companies and water sources in the urban water source within one month. Yandu District, where the Reserve is located, has become a “chemical-free zone†and has completely and completely shut down all chemical production companies.
Chemical companies located in or near environmentally sensitive areas such as drinking water source protection areas, rivers, reservoirs, etc., if the cost of relocation is huge and difficult to achieve in the short term, can it not achieve compliance discharge through governance? "With advanced wastewater treatment technology, it is entirely possible for the discharged effluent to meet the standard for long-term safety, meet the environmental standards for wastewater from drinking water sources, and there will be no pollution accidents." Huang Huayao, director of the Xuzhou Institute of Water Treatment, said that relocation is not necessary. However, if you do not relocate, you must upgrade the existing sewage treatment plant. The key is whether the decision-makers of the enterprise pay attention to it.
It is understood that after the occurrence of a pollution source of drinking water pollution, many of the sewage standards in China have been upgraded and adjusted. After the Taihu Lake incident, Jiangsu introduced the nation's most stringent environmental protection standard, "the limits of major water pollutants discharged from urban sewage treatment plants and key industrial industries in the Taihu Lake Region." For the first time, total nitrogen and total phosphorus were included in strict control standards, pesticides, nitric acid and other industries. Standards and standards introduced by various localities have also been adjusted to protect water resources. “Original pollution control technologies and facilities of petrochemical companies are no longer able to adapt to new standards. For example, for total nitrogen and total phosphorus treatment, most of the existing biochemical wastewater treatment processes use traditional nitrification and denitrification processes or membrane bioreactor processes, although The total nitrogen and total phosphorus have a certain effect, but the removal rate is low, the total nitrogen is difficult to meet the standard, and the new standard is not met, and the original technology has poor impact on the load. When the imported sewage volume or concentration has large fluctuations, the water is Disqualification is inconsistent with the principle that the source of drinking water must be 100% ensured. Only under any circumstances, the discharge after treatment reaches up to 100% compliance, it is the existence of drinking water source in the enterprise, otherwise, the cost of illegally exceeding the standard is too high. "Huang Huayao said.
The Guizhou Chemical Fertilizer Plant Co., Ltd., which is located in Guifeng City, an important source of drinking water, uses a 100% standard wastewater biochemical process to build a 4,800-cubic-meter/day sewage upgrade project. The first-generation drive succeeded and the water quality was better than Guiyang. The new standard for drinking water sources and sewage, and the renovation fee will be recovered in one year. After three months of operation monitoring, 100% compliance, no matter how the concentration of influent water changes, the water can always be controlled to the drinking water source emission standards. Shandong Union Chemical Taierzhuang Chemical Co., Ltd. is located on the bank of the Grand Canal. In this area, enterprises are required to meet the standard even if they do not meet the standard. Afterwards, Xuzhou Water Treatment Research Institute fully contracted the plant's water treatment construction and design, achieving zero discharge of sewage, and pollution control and efficiency enhancement.
Huang Huayao said that one of the two companies is transformation, one is new construction, and environmental protection has been achieved through transformation and governance. This proves that chemical companies that are located in drinking water sources rely on advanced and applicable technologies to carry out wastewater upgrading and management, and can fully meet the wastewater discharge standards for drinking water sources.
Due to historical reasons, many domestic petrochemical enterprises have obvious problems in safety and environmental protection. According to the Ministry of Environmental Protection, more than 20,000 petrochemical companies are mostly located on the water's edge, of which 10,000 are in the Yangtze River Basin, 4,000 are in the Yellow River Basin, and 2,000 are in drinking water sources and densely populated areas. The general location of these chemical companies is not suitable. Once this problem occurs, the consequences will be disastrous. Last year, the incidents such as phenol pollution from drinking water sources in Yancheng, Jiangsu, and heavy metal cadmium-contaminated water sources from Xiangyang Chemical Plant in Hunan Liuyang threatened the safety of people’s drinking water sources. This event has caused concern both at home and abroad. The Ministry of Environmental Protection has issued “About strengthening drinking waterâ€. "Survey on Water Safety Protection Work" to strengthen the supervision of drinking water sources.
Professor Zhang Quanxing from the School of Environmental Studies of Nanjing University introduced that chemical companies use large amounts of drainage and sewage has direct and indirect impacts on the hazards of drinking water sources. For example, in 2009 Yancheng Standard New Chemical Company stole phenol-contaminated wastewater incidents, which was the direct pollution caused by excessive levels of water poisons. . The other type is indirect pollution. For example, the blue algae in Taihu Lake cause water non-drinkable events. The water contains a small amount of total nitrogen and total phosphorus. Although the standard concentration of drinking water is not exceeded, this kind of nutrient-rich water will promote the rapid reproduction of cyanobacteria. Algae Secretion of toxins makes water unusable. Immediately after the accident occurred, the hazards immediately appeared. However, indirect hazards occurred from time to time, but the hazards appeared slowly. The emissions of individual companies were not enough to cause harm. Most of the companies paid insufficient attention to them.
Experts pointed out that no matter how direct or indirect the hazards are, they cannot be overcome in the treatment of pollution. There can be no luck. Once a problem arises, it will not only have a serious impact on the company itself, but also other chemical companies will suffer from similar problems. On February 20 last year, the Yancheng Standard New Chemical Company stole sewage, causing concern for the water pollution incident in the Yancheng District. Afterwards, Yancheng painstakingly and painstakingly proposed to dismantle the surrounding chemical companies and water sources in the urban water source within one month. Yandu District, where the Reserve is located, has become a “chemical-free zone†and has completely and completely shut down all chemical production companies.
Chemical companies located in or near environmentally sensitive areas such as drinking water source protection areas, rivers, reservoirs, etc., if the cost of relocation is huge and difficult to achieve in the short term, can it not achieve compliance discharge through governance? "With advanced wastewater treatment technology, it is entirely possible for the discharged effluent to meet the standard for long-term safety, meet the environmental standards for wastewater from drinking water sources, and there will be no pollution accidents." Huang Huayao, director of the Xuzhou Institute of Water Treatment, said that relocation is not necessary. However, if you do not relocate, you must upgrade the existing sewage treatment plant. The key is whether the decision-makers of the enterprise pay attention to it.
It is understood that after the occurrence of a pollution source of drinking water pollution, many of the sewage standards in China have been upgraded and adjusted. After the Taihu Lake incident, Jiangsu introduced the nation's most stringent environmental protection standard, "the limits of major water pollutants discharged from urban sewage treatment plants and key industrial industries in the Taihu Lake Region." For the first time, total nitrogen and total phosphorus were included in strict control standards, pesticides, nitric acid and other industries. Standards and standards introduced by various localities have also been adjusted to protect water resources. “Original pollution control technologies and facilities of petrochemical companies are no longer able to adapt to new standards. For example, for total nitrogen and total phosphorus treatment, most of the existing biochemical wastewater treatment processes use traditional nitrification and denitrification processes or membrane bioreactor processes, although The total nitrogen and total phosphorus have a certain effect, but the removal rate is low, the total nitrogen is difficult to meet the standard, and the new standard is not met, and the original technology has poor impact on the load. When the imported sewage volume or concentration has large fluctuations, the water is Disqualification is inconsistent with the principle that the source of drinking water must be 100% ensured. Only under any circumstances, the discharge after treatment reaches up to 100% compliance, it is the existence of drinking water source in the enterprise, otherwise, the cost of illegally exceeding the standard is too high. "Huang Huayao said.
The Guizhou Chemical Fertilizer Plant Co., Ltd., which is located in Guifeng City, an important source of drinking water, uses a 100% standard wastewater biochemical process to build a 4,800-cubic-meter/day sewage upgrade project. The first-generation drive succeeded and the water quality was better than Guiyang. The new standard for drinking water sources and sewage, and the renovation fee will be recovered in one year. After three months of operation monitoring, 100% compliance, no matter how the concentration of influent water changes, the water can always be controlled to the drinking water source emission standards. Shandong Union Chemical Taierzhuang Chemical Co., Ltd. is located on the bank of the Grand Canal. In this area, enterprises are required to meet the standard even if they do not meet the standard. Afterwards, Xuzhou Water Treatment Research Institute fully contracted the plant's water treatment construction and design, achieving zero discharge of sewage, and pollution control and efficiency enhancement.
Huang Huayao said that one of the two companies is transformation, one is new construction, and environmental protection has been achieved through transformation and governance. This proves that chemical companies that are located in drinking water sources rely on advanced and applicable technologies to carry out wastewater upgrading and management, and can fully meet the wastewater discharge standards for drinking water sources.
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