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Development trend of filters in ChinaIn today's heavily polluted world, once impurities in water enter the human body, people's kidneys have to act as filters. Reverse osmosis can filter out all impurities, so the reverse osmosis water purifier has the reputation of "external kidney". Because reverse osmosis can remove protozoan spores, it is especially suitable for people with defective immune system. Therefore, the new drinking water mode based on RO reverse osmosis technology began to enter the lives of ordinary citizens from the expensive industrial high-end. Direct drinking water at residential terminals.
It has been nearly ten years since it entered the Chinese market in the mid-1990s. The whole market has shown a momentum of rapid growth, with more than 300 large and small manufacturers. The voice of the government on the construction of direct drinking water is also growing, and the acceptance of consumers is gradually increasing. After the cultivation and guidance of many enterprises in the early stage, the direct drinking water market will enter the golden period of industry development, with a potential market of 100 billion yuan waiting to be developed. The self-cleaning filter has a great contribution to the horizontal treatment process. Development trend of self cleaning filter in water treatment Self cleaning filter is a kind of high-tech water treatment equipment. It is favored by people because of its stable effluent quality, low operating cost and long service life. The self-cleaning filter is a kind of precision equipment that directly intercepts impurities in the water by using the filter screen, removes suspended solids and particles in the water, reduces turbidity, purifies water quality, and reduces the generation of system dirt, bacteria, algae, rust, etc., so as to purify water quality and protect the normal operation of other equipment in the system. Its main components include: motor, electric cabinet, control pipeline, main pipe assembly, filter element assembly, 316L stainless steel brush, frame assembly, transmission shaft Inlet and outlet connecting flanges, etc. The self-cleaning filter overcomes many shortcomings of traditional filter products, such as small sewage capacity, easy to be blocked by dirt, the filter part needs to be disassembled for cleaning, and the filter state cannot be monitored. It has the function of filtering raw water and automatically cleaning and discharging the filter element. In addition, the system provides uninterrupted water supply during cleaning and discharging, which can monitor the working state of the filter with a high degree of automation. It covers the requirements of various filtering precision from 10um to 3000um. To sum up, the self-cleaning filter is different from the traditional filter. Its biggest feature is the high degree of automation. It is believed that the self-cleaning filter will become the leader of water treatment equipment in the future. 1. development status of domestic sewage treatment equipment The production of domestic sewage treatment equipment began in the late 1970s. At that time, the level of standardization, complete set and serialization of products was very low, and there were few finalized products. Since the 1990s, the relevant national departments have successively carried out technical transformation on the major sewage treatment equipment manufacturing enterprises, improving the manufacturing capacity and level. The production level of the special equipment for urban sewage treatment and the supporting general equipment has been greatly improved. At present, all or main equipment of urban sewage treatment plants with daily treatment capacity of 5, 10, 25 and 50 tons can be localized. Among them, domestic microporous aerators, high-strength aerators, belt filter presses, various types of grid decontaminators, mud scrapers, sand scrapers, aeration rotary brushes, aeration blowers, large sewage pumps, submersible electric pumps, etc. have basically been able to meet the needs of the domestic market, and some products are exported. In terms of product design, domestic equipment such as sewage sludge lifting system, mechanical filtration sedimentation system, aeration treatment system and sludge dewatering treatment system with a daily treatment capacity of 50000 tons to 500000 tons has reached the international level in the 1980s, and can provide complete sets of equipment. However, there is still a big gap between domestic equipment and foreign developed countries in terms of biogas power generation system and on-line monitoring system. There are still gaps to be filled in some international fields of the latest technology and equipment in the 1990s. In terms of product level, the efficiency of single machine equipment for blower, water pump and other products with large energy consumption has approached the international level in the 1980s. The overall level of complete sets of products is equivalent to the international level in the 1970s and 1980s. 2. development status of sewage treatment equipment in developed countries Sewage treatment equipment in developed countries has reached a highly modern level and has the following characteristics: First, the urban sewage and industrial wastewater treatment equipment has been standardized, finalized, serialized and packaged, forming a water treatment equipment industry with complete categories and a high degree of commercialization. Second, the water treatment unit equipment, such as sedimentation, filtration, extraction, adsorption, microfiltration, electrodialysis, etc., has formed a specialized large-scale production, with relatively stable varieties, specifications and quality, reliable performance parameters and very convenient user selection. Third, the complete set of urban sewage equipment is developing towards large-scale, and the industrial wastewater treatment equipment tends to be specialized and complete with the maturity of the process. Fourth, the fan, water pump, valve and other general equipment supporting water treatment have gradually realized specialized design and organized production to meet special needs. Fifth, the shortage of water resources, water eutrophication and drinking water safety have led to the development of advanced wastewater treatment equipment and disinfection equipment to a considerable extent. Sixthly, anaerobic treatment technology has attracted renewed attention, which has promoted the application of anaerobic treatment equipment in the treatment of high concentration organic wastewater. 3. problems of domestic equipment At present, there is a big gap between domestic sewage treatment equipment and developed countries. The main problems are as follows: First, the contradiction between production and demand is prominent. The comprehensive production capacity of sewage treatment equipment in China is far from meeting domestic demand. Second, the variety structure is backward, the variety is few, and the development ability is weak. Among many products, general mechanical products and primary products account for a large proportion, and there are few modern mechanical, electrical and instrument integration equipment or are in the initial stage. Except for large environmental protection backbone enterprises, most enterprises lack the self-development ability of new products. Third, the product quality is poor and the technical level is low. 35-40% of the products are equivalent to the international level in the 1960s and 1970s. Among the existing domestic sewage treatment equipment, about 1/5 are products that are restricted or eliminated within a time limit, and about 2/5 are products that need to be improved. Fourth, the earning of foreign exchange by products is unstable. Although domestic sewage treatment equipment is exported, generally speaking, the technical content of exported equipment is not high, the export category, variety and region are narrow, and the competitiveness in the international market is not strong. Fifth, the comprehensive benefits of relevant enterprises are generally low. Except for a few enterprises, the economic benefits of most sewage treatment equipment manufacturing enterprises are poor. Sixth, the capacity of complete equipment and project contracting is weak. Few enterprises are able to undertake the contracting of sewage treatment projects and complete sets of equipment. Most enterprises focus on the development and manufacturing of finished products that they are more suitable for, and are engaged in the production and sales of single machines, thus making the domestic sewage treatment complete sets and general contracting capacity weak. Seventh, operation training and after-sales service need to be strengthened. The mechanical filter can not only effectively solve the problems of "secondary pollution" of barreled water, but also supplement and improve the direct drinking water in pipelines. Because of its many advantages, it has developed rapidly since the United States took the lead in the successful development in the 1980s. At present, China's mechanical filter market is quietly emerging and has achieved great success |
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