Editor's Note: The Ministry of Environmental Protection announced recently 8-10 months of environmental protection reported that the proportion of industrial waste water pollution to 51.5%, then living in the first report of water pollution. Visible, intensive governance is imminent!
Statistics show that in recent years, the annual discharge of industrial wastewater in China is basically higher than 20 billion tons. Due to its large amount, wide range and complex composition, it is not easy to govern the country. "Pay close attention to prevention and control of industrial pollution" by the "water ten" listed in the first, did not require the implementation of sewage treatment industrial agglomeration, the end of this year or even face the withdrawal of the park. How to enhance the processing efficiency safely and environmentally?
The electron beam treatment of industrial wastewater technology jointly developed by China Guangdong Nuclear Technology Development Co., Ltd. ("CGNIC") and Tsinghua University brought new ideas for governance. This "China's first, world-leading" technology has passed the scientific and technological achievements appraisal organized by the China Nuclear Energy Industry Association and the first demonstration project was completed, marking a historic breakthrough in China's advanced technology for industrial wastewater treatment.
Dim dark room, the effluent was cascading down, by the "irradiation" by the turbidity become clear, to line standard. The whole process is only 0.01 seconds, water pollutants to be degraded, color, odor and removed.
This is located in Zhejiang Jinhua Pujiang County, printing and dyeing enterprises Hengchang Group, China's first electron beam treatment of industrial wastewater technology demonstration project. Is the use of electron beam irradiation of industrial wastewater, in order to achieve the purpose of oxidative degradation and disinfection.
Recently, this technology has successfully passed the scientific and technological achievements appraisal organized by China Nuclear Energy Industry Association. Nine academicians and five industry experts believe that the technology is a national initiative, lower cost, a higher degree of purification, and difficult to degrade organic matter with other technology unparalleled advantages, is expected to solve the problem of refractory wastewater treatment "worldwide problem ". Once large-scale industrialization is achieved, the level of industrial wastewater treatment in our country can be greatly enhanced.
Specialized industrial wastewater "incurable diseases"
In addition to the "high-end mysterious" nuclear power plant, nuclear technology can also be used for daily production and living, e-beam industrial wastewater treatment is one.
As a major difficulty in water treatment, industrial wastewater due to a large, wide range, high concentration, complex composition, so many companies have a headache. "Water ten" The first task is to "pay close attention to prevention and control of industrial pollution." With the increasing environmental standards, the existing acid-base neutralization, microbial metabolism, membrane separation and other traditional techniques, more and more difficult to meet the processing requirements.
The so-called electron beam treatment technology, is a series of physical, chemical and biological effects generated by ionizing radiation, highly efficient removal of various pollutants in wastewater to achieve deodorant water, disinfection and sterilization. Compared with the traditional method, the technology is widely applicable, fast response, high efficiency, lower cost, higher degree of purification, especially for refractory organic wastewater, antibiotic wastewater, including pathogenic bacteria and other "incurable diseases" More effective, listed by the International Atomic Energy Agency as "the main research direction of the peaceful use of atomic energy in the 21st century".
As Pujiang County's largest printing and dyeing enterprises, Hengchang project Nissan wastewater 6000-9000 cubic meters. Two large reservoirs, soy sauce waste water along with the foam "puff" roll, punctuated the spit from time to time. Due to many types of pollutants in printing and dyeing wastewater, high chroma, containing a large number of toxic substances, the original complex process of the plant, the higher the cost, usually takes more than ten hours.
Today, the waste water from the front-end biological treatment enters the electron-beam equipment and it only takes 0.01 seconds to complete the irradiation at an instant and can reach the standard without secondary pollution.After the plant is put into operation on a large scale, the daily wastewater treatment capacity can reach 1.5 Million cubic meters. "Zhang Jianfeng, chairman of CGN introduced.
A ton of wastewater can be saved 1.4 yuan
Pass the identification is only the first step, the key is to apply. Nuclear technology "fly into the homes of ordinary people," enterprises can afford? Used safely?
Zhang Jianfeng said that electron beam technology is not completely abandon the original equipment and means, but according to the actual situation of enterprises, combined with existing technology upgrade. "Hengchang project originally adopted the method of" biochemical + physico-chemical + ozone "and can only reach the standard of access to the urban sewage treatment plant. The cost of process operation and management fee is about 3.95 yuan / ton, Decolorization of the drug fee. "
Electron beam technology in the original biochemical treatment based on the operation, not only to replace the late tedious procedures, but also to achieve in-line standard. "In contrast, the cost per ton of waste water treatment savings of about 1.4 yuan per day treatment of 10,000 tons, the device runs 350 days a year, saving about 4.9 million yuan a year can be partially reused to improve the treated wastewater Enterprise economic benefits.In addition, the core equipment electronic accelerator service life of more than 20 years, companies do not have to worry about frequent replacement of equipment. "Zhang Jianfeng said.
In terms of safety, Wang Jianlong, vice president of the Institute of Nuclear Energy and New Energy Technology of Tsinghua University, believes that "electron beam treatment of industrial wastewater has the characteristics of safety and environmental protection." Although it belongs to the field of nuclear technology applications, the electron beam device does not use radionuclides, and the switch is directly controlled by the power supply, and the safety interlocking design is realized to ensure timely and rapid power-off when there is an accident, without any radiation after the power-off.
"Electron beam irradiation treatment of wastewater, does not produce toxic by-products, there is no radioactive, will not affect the surrounding environment." Wang Jianlong said that the electron beam radiation device in the global industrial production, scientific research and other fields widely used, Both mature experience available for reference, but also the current protection and operation of laws and regulations.
With industrial application promotion conditions
In fact, in addition to the first demonstration project, CGNPC also successively carried out research on electron beam irradiation technology, renovation of wastewater treatment technology and compilation of technical specifications. It plans to extend this technology to water treatment such as medical treatment, waste incineration, desulfurization and denitrification Outside the field.
Guo Lili, secretary general of China Association of Isotopes and Radiation Industries, told reporters that in the developed countries such as the United States and Japan, the nuclear technology application industry accounts for 2% -5% of the total GDP and is widely used in fields such as industry and agriculture, environmental protection and resource exploration to form A huge industrial chain. However, China is still in the initial stage of development. The output value of nuclear technology is less than 0.5% of the GDP. Electron beam treatment of industrial wastewater technology, with the promotion of industrial base and conditions.
"As the only device in operation in the world today, EBT has a promising future in wastewater treatment technology, especially for the treatment of refractory wastewater, industrial wastewater and harmless treatment of special pollutants. , Both for new environmental projects, but also the original standard of environmental protection facilities transformation. "China Guangdong Nuclear Accelerator Technology Co., Ltd. Environmental Protection Division Vice President Zhang Youxue said
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