CHEMICAL PRODUCTION
In the inorganic salt industry, acid hydrolysis, alkali dissolution, leachate filtration, and cake washing are often involved, such as heavy alkali filtration and ammonia sludge separation in the alkali industry. In the fertilizer production, the filtration of phosphogypsum and the separation of acid-insoluble substances are inseparable from liquid-solid separation operation. The quality of separation directly affects the quality, output, and yield of products.
In recent years, the rapid development of fine inorganic chemical products has also put forward new requirements for filtration and separation equipment. In dye production, most of the products are filtered, cake washed and sub-operated.
In addition, solid-liquid separation operation is involved in the production of petrochemical products, pigments, coatings, cement, and fine chemical products. Therefore, solid-liquid separation plays an important role in chemical production.
Almost all mining processes in the mining and metallurgical industry are related to water and ore separation. In metallurgical industry, the production of alumina and zinc oxide and gold, the separation of uranium in the atomic energy industry, the recovery of coal preparation water and the rational utilization of pulverized coal all rely on liquid-solid separation operation.
This can not only solve the environmental protection problem, but also achieve the purpose of comprehensive utilization of energy, and has a very broad application prospect.
Johnson screen is widely used in the mining industry, especially in the coal washing industry. Johnson screen is the best choice.
PHARMACEUTICAL INDUSTRY
Biological Fermentation and Biological Products Industry: In the process of bio-fermentation, there are problems of separation of fermentation broth and mycelium. The most common ones are filtration and centrifugation. In the enzyme preparation industry, microfiltration and ultrafiltration are commonly used to concentrate and separate alkaline protease, lipase and polysaccharide microorganisms, and their operating costs are only half of the traditional methods.
In the pharmaceutical industry, such as the production of antibiotics and the preparation of sterile water, the liquid-solid separation process is also indispensable. In the fermentation industry, the comprehensive utilization of fermentation residue can not only solve the problem of environmental pollution but also produce high-quality feed, which has remarkable social and economic benefits. To achieve this goal in the industry, it is closely related to efficient solid-liquid separation equipment.
In the pharmaceutical industry, besides the conventional solid-liquid separation, the treatment of residue of traditional Chinese medicine also needs filtration and separation technology, mainly through the solid liquid separator for dehydration treatment.
ENVIRONMENTAL PROTECTION ENGINEERING
In industrial production and daily life, a large amount of sewage will be produced. If it is discharged directly without treatment, it will cause serious environmental pollution and affect people's health. Therefore, the comprehensive treatment ability of sewage has become an important symbol of a country's economic strength and technical level.
Biological treatment of sewage is an important method at this stage. It involves sludge concentration, condensation, and incineration of dehydration. The dehydration effect will affect the energy consumption index of the whole treatment process.
Moreover, a large amount of protein-containing wastewater is produced in the food industry, such as direct discharge, which not only causes environmental pollution but also loses a large amount of protein. If it is settled, dehydrated and filtered by the membrane, it can save a large amount of water for production and recover valuable protein. It can be said that it is more than one stroke, and it is an area being developed by developed countries.
Metal filtration and separation products commonly used in sewage treatment are:
- Johnson screen
RESEARCH DIRECTION AND DEVELOPMENT TREND
At present, the research direction of solid-liquid separation technology is still superficial, which can not be effectively compared with traditional technology and process, and has not been widely applied.
The target product liquids are mostly confined to simple molecules, but little research has been done on the separation of genetically engineered proteins and other bioactive substances with important application value, and new technologies have been developed.
The separation mechanism, control factors and modeling of surgery are still at the preliminary stage of exploration.
However, with the development of science and technology and industrial production, more attention will be paid to energy, resources, agriculture, environmental management, energy conservation, and other issues. The rapid development of high-tech fields such as biochemical industry, new materials, the fine chemical industry will inevitably put forward higher requirements for liquid-solid separation technology.
It is expected that the research and development of liquid-solid separation technology will focus on the following aspects in the future.
(1) Material handling in the process of energy diversification fuel exploitation;
(2) The separation process of liquid and solid during the extraction of concentrate in the process of utilization of mineral resources with low grade;
_Water treatment, including industrial water treatment, industrial and domestic water treatment and recycling; _Biochemical, pharmaceutical and chemical high-purity products and high-purity water treatment technology;
(5) Improvement, renewal, and replacement of filter equipment in traditional industrial production.
From the development trend of solid-liquid separation technology, the purpose of solid-liquid separation technology research is to shorten the whole downstream engineering process and improve the efficiency of a single operation. The previous piecemeal method is time-consuming, laborious, ineffective and cannot keep up with the pace of development.
At present, there is a qualitative change in the study of the whole biological separation process. It is believed that we can start from two aspects. First, we should continue to study and improve some new separation technologies suitable for biochemical engineering.
Secondly, the efficient integration of various separation technologies is carried out. Nowadays, new cell separation technologies have emerged, such as the affinity method, two-phase water distribution technology, reverse micelle method, liquid membrane method, and various high-efficiency chromatography methods.
Summary
Solid-liquid separation technology is the core of biotechnology, and its development promotes the development of the biotechnology industry to a certain extent. Therefore, it is imperative to enrich and strengthen the research of solid-liquid separation technology in the downstream treatment process in order to accumulate more and make breakthroughs so that downstream treatment process can reach and adapt to the technical level and requirements of the upstream process as soon as possible.
It is believed that solid-liquid separation engineering will play a greater role in the progress of science and technology in the new century and make more brilliant achievements.
At the same time, this review made me have a deeper understanding and understanding of solid-liquid separation technology so that I expanded the corresponding knowledge and understanding of the latest solid-liquid separation technology.
ZHEHAN can provide filtering and separation solutions for global users.
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