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Shortcomings and Solutions of Traditional Purification Engineering
Release time:
2017-11-08
Traditional purification systems have three shortcomings: (1) In traditional purification systems, bacteria and dust particles are merely trapped by filter membranes without being killed. Under suitable temperature and humidity conditions, they can easily multiply on their own, leading to contamination, mold growth, and other issues. Continued use of such systems can easily result in further problems.
Traditional purification engineering has three shortcomings:
(1) In traditional purification systems, bacteria and airborne dust particles are merely trapped by filter membranes without being killed. Under favorable temperature and humidity conditions, these particles can easily multiply on their own, leading to contamination, mold growth, and other issues. Continued use in such conditions can easily result in further problems.
Secondary pollution occurs;
(2) Due to severe air pollution in our country, filter membranes are easily clogged, requiring frequent replacements, which leads to high and complicated usage costs.
(3) Although relying on high-efficiency filter membranes has addressed the issue of cleanliness, it has failed to resolve the problems of toxic and harmful gases, odors, and chemical contamination generated by the purification system itself within the cleanroom.
Specific solutions include:
(1) Use an electrostatic sterilization and purification cabinet to kill bacteria, disinfect, and remove airborne dust particles.
The working principle of the electrostatic sterilization and purification cabinet: The electrostatic field within the cabinet employs a dual-zone electrostatic field configuration featuring circular-hole needle-shaped electrodes and honeycomb-bar electrodes. These two zones are referred to as the polarization zone and the dust-collection zone. As air drawn from the ventilation duct passes through the dual-zone electrostatic field, bacteria, airborne particulates, and other pollutants in the air are first polarized by the electrostatic field—meaning they acquire a negative charge. Since bacterial spores themselves carry a negative charge, they receive an additional high-energy negative charge as they pass through the polarization zone. When these negatively charged bacteria, viruses, and other pollutants enter the dust-collection zone—a region with a positive electric field—they are immediately and strongly attracted to the positively charged collection plates. Under the influence of the positive electrode, these particles rapidly release the negative charge energy stored within their spores in an instant, causing the spores to rupture and die. This results in a sterilization rate of up to 99.99%, achieving the goal of sterilization and disinfection. At the same time, the electrostatic field exerts a strong attraction and coalescing effect on airborne particulates, achieving a dust removal efficiency of 96%. This effectively protects the high-efficiency filter membrane, extending its service life by 2 to 3 times. Moreover, since the electrostatic field is constructed from metal materials, it can be easily removed, cleaned, and reused repeatedly, thereby significantly reducing the system's operating costs.
(2) Utilize nano-titanium-carbon mesh and photocatalytic technology to remove harmful gases and odors.
By installing nano-titanium-carbon filters—in the supply and return ducts of purification systems (or within electrostatic purification cabinets) and employing photocatalytic technology, it is possible to very effectively remove and degrade toxic and harmful gases as well as odors. This addresses the longstanding challenge in cleanroom engineering of being unable to eliminate such toxic and harmful gases and odors.
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