The growth process of domestic sewage filter press industry in my country

         The establishment of national “Seventh Five-Year”, “Eighth Five-Year” and “Ninth Five-Year” scientific and technological research topics has made my country’s domestic sewage filter press industry new technologies, sludge treatment new technologies, and reclaimed water reuse technologies have achieved gratifying results. Scientific research results, some projects have reached the international advanced level. Sudong Chemical is a leader in the field of sewage treatment filter presses. It has also conducted long-term research on this important application industry of filter presses. Then, let us take a look at the growth process of my country’s domestic sewage filter press industry.

The situation in the 1950s and 60s. In the early days of liberation, since industrial and agricultural production had just started, the level of sewage pollution was very low at that time, and the use of sewage for agricultural irrigation was advocated, especially in the water-deficient areas in the north, the use of sewage for irrigation was promoted as an experience, such as the famous Shenfu Irrigation Canal, etc. Only a few cities across the country have built nearly ten sewage treatment plants (including the three sewage treatment plants built by foreigners in 1921 and 1926). Some of the treatment processes are still primary treatment, and the scale of treatment is also very small. , There are only a few thousand cubic meters per day, and the largest is only about 50,000 cubic meters per day, which makes the technology and management level of the domestic sewage filter press in a relatively backward state.
Development and changes in the 1970s and 1980s. With the continuous development of industrial and agricultural production and the gradual improvement of people’s living standards, the composition of urban sewage has also changed, and the degree of pollution has gradually evolved from low to high. In some developed capitalist countries, the health of the people has been affected by sewage pollution. The painful lesson of prestige. Construction began in the late 1970s, with a treatment scale of 0.1 cubic meters per second for primary treatment and 0.025 cubic meters per second for secondary treatment. The Beijing Gaobeidian Wastewater Treatment Pilot Plant was also in operation. Both the state and local governments are preparing for the construction of a large-scale domestic sewage treatment plant, which broke ground in 1982 and was completed and put into operation on April 28, 1984, with a treatment capacity of 260,000 cubic meters per day. The birth of Tianjin Jizhuangzi Sewage Treatment Plant filled the gap in the construction of large-scale sewage treatment plants in my country and attracted the attention of the central leadership.

The development of sewage treatment technology and the achievements of sewage treatment plant construction at the end of the 20th century. my country’s largest sewage treatment plant in the 20th century, Gaobeidian Sewage Plant, with a treatment scale of 500,000 cubic meters per day in the first phase and 1 million cubic meters per day in the second phase. Tianjin Dongjiao Sewage Treatment Plant, with a treatment scale of 400,000 cubic meters /day. The treatment scale of Chengdu Sanwayao Wastewater Treatment Plant is 400,000 cubic meters/day, the treatment scale of Hangzhou Sibao Wastewater Treatment Plant is 400,000 cubic meters/day, and the scale of Shenyang Northern Wastewater Treatment Plant is 400,000 cubic meters/day. Zhengzhou Wangxinzhuang The sewage treatment plant has a processing scale of 400,000 cubic meters per day. The construction of these large-scale sewage treatment plants symbolizes the continuous growth of my country’s sewage treatment industry, the achievements of the development of domestic sewage filter press technology in my country, the attention of the Chinese government to the sewage treatment industry, and the domestic sewage filter press in my country. The machine industry has developed to a new stage.
In the 21st century, as the country increases its efforts to control environmental pollution, the domestic sewage filter press industry has a huge room for development. The production and manufacturing of domestic sewage filter press equipment should promptly change the development concept, actively absorb foreign advanced corporate concepts, management and business methods, and introduce technology and professional talents to drive the overall industry to become bigger and stronger.

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