The filter press is a filter separator, which is widely used in various industries, including environmental protection, minerals and processing, chemistry, food, and medicine.
After years of introduction, digestion, and independent innovation, the production technology and process equipment level of the filter press industry in China has been greatly improved, the technical content and quality of the products have been greatly improved, and the overall equipment level is close to the world's advanced level. Not only the operating efficiency of the filter press equipment has reached the international advanced level, but the operating reliability of the equipment is getting smaller and smaller with foreign countries, and local products are gradually entering the international market.
The market demand for filter presses in China has increased from approximately 35,100 units in 2012 to 107,200 units in 2019, with an average annual compound growth rate of 13.3%. In 2012, the production volume of China's filter press market was about 3.65 units, which increased to 153,400 units in 2019, with a compound annual growth rate of 22.8%. After bottoming out in 2016, China's filter press market began to recover. By 2019, the market size will reach 6.92 billion yuan, a growth rate of 21%.
In recent years, driven by a series of government policies, China's urban sewage treatment facilities have been completed. In 2018, the national urban sewage treatment rate reached 95.49%.
Although the level of sewage treatment in China has been continuously improved, and the scale of treatment has been at a high level in the world, the level of supporting sludge treatment has not reached the corresponding requirements, and the level of sludge treatment has lagged seriously. Data shows that in 2018, the scale of harmless sludge disposal nationwide was 74,200 tons per day, and the proportion of harmless sludge was only 40%. With the increasing awareness of the environmental risks and hazards of sludge in various places in recent years, various national and local policies, regulations, and plans have been promulgated one after another, and the trend of "equal importance of sludge and water" is gradually taking shape, and standards for sludge treatment and disposal costs are also emerging The trend of increasing year by year has become a major benefit for the development of the sludge industry.
The Increase in the Proportion of Sludge Harmless Disposal Will Boost the Demand for Filter Press
The generation of sludge mainly comes from the treatment of sewage, and 30% to 50% of the pollutants in the sewage are transferred to the sludge. The moisture content of sludge is a core indicator for the harmless treatment and resource utilization of sludge. Under normal circumstances, 10 to 30 tons of sludge can be produced for every 10,000 tons of industrial sewage treated, and 5-8 tons of sludge with a moisture content of 80% can be produced for every 10,000 tons of domestic sewage. With the acceleration of urbanization and the improvement of science and technology, the amount of sewage generated and the treatment rate have also increased, resulting in more sludge. In 2018, the amount of sludge produced in China was 80.263 million tons, an increase of 17.93 billion tons from 2014.
The filter press is a rigid requirement for the field of sludge treatment. In the process of sludge treatment and disposal, the requirements for moisture content in each process are becoming more and more stringent, which stimulates the demand for mechanical dehydration equipment. Under normal circumstances, the sludge treatment and disposal system should include sludge stabilization, reduction, and harmless treatment and disposal processes, based on this, to realize the rationalization of resource utilization. At present, among the various technical routes in the field of domestic sludge treatment, energy drying, mechanical dehydration, aerobic fermentation, and anaerobic digestion technologies account for 31%, 27%, 18%, and 20%, respectively, of which mechanical dehydration is one of the A mainstream technical route. Filter press filtration is one of the most important equipment for mechanical dehydration, which has rigid requirements.
The increase in the output of machine-made sand and the large-scale trend of mines have increased the demand for filter presses. In the production process of the machine-made sand wet process, there is a process of water washing, so a large amount of sewage is generated in the process of washing the sand with water. The current processing technology route generally uses a filter press to separate the sand washing wastewater from mud and water, the mud is filtered into a mud cake and discharged, and the clean water is returned to the clean water turret, thereby achieving fine sand recovery and efficiency, solid waste dry discharge treatment and water resources Recycling and reuse. With the development of mechanical sand production, mine scale, and standardization, the implementation of environmental protection policies is strengthened, and the large amount of wastewater disposal demand brought about will become another increment of filter press, and further increase the market space of filter press.
Industry Concentration Continues to Increase
Filter press is a capital-intensive industry, and its high-end products and mass customization production demands require a large amount of capital investment, and the industry has a high barrier to entry. Data in June 2020 showed that the total number of companies engaged in the production of professional filter presses reached 186, of which only 17 had registered capital of more than 50 million yuan. There are 322 companies with a registered capital of less than 10million yuan, accounting for about 95%. There are many small enterprises in this industry. Usually, the processing scale of products is small, the product variety is small, and the number of high-efficiency high-end products is small. These enterprises often rely on low prices to compete. Large companies have formed barriers to core competitiveness in technology, R&D, industry, equipment, and sales channels, and their profitability is stronger than that of small and medium enterprises, and their core competitive advantages are solid.
Import substitution has accelerated, and the domestic concentration trend is clear. Domestic filter press companies have obvious advantages in terms of sales price, operating cost, and response speed. Besides, the domestic diaphragm filter press technology is relatively mature and can replace imported filter plates, which is conducive to cultivating the consumption habits of downstream companies to purchase and use domestic filter presses and promoting the development of domestic filter presses.
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