nueva camiseta manchester city -
??1, water treatment industry, introduced the
??????Water treatment in order to make the water meet specific environmental and recycling purposes, by physical, chemical and biological means, water quality control, remove or add water, simply put, water is meant to make the water meet specific environmental and recycling of use, through physical, chemical and biological means, water quality control, remove or add some water for the production, life and environment do not need or require material as a whole. The scope of water treatment into the production and supply of tap water, sewage treatment and recycling and other water treatment, use and distribution of three categories.
??????From the water treatment industry, the actual operation point of view, we can be divided into circulating water system management, integrated water resources management and water supply and other special treatment in three categories. Circulating water system management sector include central air-conditioning cooling circulating water treatment, refrigeration cycle of water treatment, heating water, central heating circulating water treatment, industrial cooling, chilled water circulating few segments of equipment production and sales. Integrated water resources management sector mainly include wastewater treatment, landscape and environmental water treatment, rainwater use, urban sewage and waste utilization, general production of sewage and waste utilization of several market segments. Water supply and other mainly by the water supply and other water treatment industries pose.
??In 2008 the market scale of China's water industry to reach 1,000 billion yuan, of which circulating water system management industry was 77.0 billion yuan, integrated water resources management industry as 45.34 billion yuan, and the rest totaled 46.96 billion yuan. This shows that China's water market is huge, composition is a water circulation system of governance and integrated water resources management industry and water supply and half of each other.
??????Note: Due to the breakdown of water supply and other technical requirements for water treatment industry, a low, all kinds of technology is more mature, below the water treatment industry, the main object of study for the circulating water system of governance and integrated water resources management industry.
??????Second, the status quo of China's water treatment industry, technology development
??????Water treatment industry is a multi-disciplinary, knowledge-intensive high-tech industries, involving biological, chemical, machinery, electronics and other fields is the country's environmental protection industry development level an important symbol. Since the 20th century, 90 years in the country to vigorously promote sustainable development, the establishment of environment-friendly conservation community, background, domestic water treatment business through the introduction of foreign advanced technology and constant innovation in technology has made considerable progress in have been gradually reduced with the advanced water treatment technology gap.
??????1, circulating water system Development of Treatment Technology
??????Circulating water treatment technology in the final analysis is to answer the questions under the premise of controlling water quality indicators, how to protect the system is stable and reliable operation
nueva camiseta manchester city and reduce processing costs; how to effectively improve the concentration ratio, saving water resources and secondary pollution and so on. At present, the circulating water system of governance as the main technology is the physical methods and chemical methods.
??????1.1 Physical Water Treatment Technology Development
??????Physical water treatment technology, the development process has gone through the magnetic treatment, high-voltage electrostatic processing, high-frequency radio-frequency electromagnetic treatment and the four stages of processing. Currently based on magnetic processing and high-voltage electrostatic technology products dealing with restrictions on the use of the conditions have gradually lost their competitive edge, high-frequency electromagnetic radio frequency treatment and processing technology to become mainstream technology.
??????1.2 Chemical Water Treatment Technology
??????Circulating water through the cycle of chemical water treatment technology dosing water stabilizer in the form of chemical products to solve the system scaling, corrosion and bacteria breeding algae problem. Due to easily lead to secondary pollution and control system to address such issues as the earlier restricted the chemical method to promote the use of water treatment technology.
??????1.3 circulating water
nueva camiseta manchester city system treatment technology trends
??????At present, the physical water treatment technology has been developed to a higher level of RF-type physical field water treatment technology, the technology at home and abroad a centralized air-conditioning and heating system of circulating water treatment areas to be widely used. In practical engineering applications, RF-style physical fields water treatment technology has been successfully applied to the Guangzhou University City district cooling and district heating projects, the majority of the Beijing Olympic Games venues, the National Grand Theater, as well as basic transportation infrastructure such as Beijing rail transportation, rail transportation in Tianjin , Nanjing rail transport projects.
?????Chemical cycle of water treatment technology, along with the large-scale fertilizer petroleum, chemical, metallurgical equipment to introduce and develop. Application of chemical treatment longer, technology is more mature. However, chemical treatment equipment, mainly through the regular or periodic dosing dosing the water to control the water quality in quantitative pharmaceutical scaling, corrosion and bacteria breeding ground for algae and other issues, because of its high operating cost (subject to the system of continuity dosing chemical treatment agents ), likely to cause secondary pollution of water, resulting in circulating water unstable and subject to certain restrictions on scope of application.
??????At present, surface water, groundwater and wastewater reuse and other dynamic replenishment water gradually applied to
nueva camiseta manchester city circulating water systems, dynamic and static quality of the replenishment cycle of water gave rise to conflicts between the requirements, therefore, in the physical law static treatment of recycled water on the basis of the main technical indicators, supplemented by dynamic chemical treatment solution replenishment dynamic changes of physico-chemical water treatment technology has solved the water quality fluctuations due to recharge of recycled water quality problems of instability, is the circulating water system technology, the future of the area of governance trends.
??????2, integrated water resources management technology development