MESP® Air Purification and Sterilization Technology
- A new generation air purification technology-
MESP®stands for Micro-electrostatic Precipitation. It is highly efficient at removing airborne particles like PM2.5, fungus, dust, pollen, soot, smoke and powerfully deactivates viruses and bacteria with permanent washable filter. MESP technology is an innovative upgrade from ESP (Electrostatic Precipitator) technology. Compared to ESP, MESP not only has 10 times the clogging capacity, but also solves the problem of ozone generation, arc and spark.
The working principle
In the MESP system, airborne particles in propelled air flow are electrically charged before passing into honeycomb shaped filter. The filter is formed by layers or rows of tubes which only has 1.8 mm inner spacing and each row contains thin electrode sheets with insulation coating that generate intense electrical fields within the tubes. Charged particles - pollutants, bacteria, germs, viruses - are pulled to the walls of the tubes - and firmly stick.
The polymer tube’s insulation material, prevents current from flowing between electrodes even though with an intense electric field. The unique volt-ampere characteristic curve of MESP technology leads to the result: high voltage and extremely low current without the potential dangers of electrode damage and electric shock, which are traditional ESP product weaknesses.
The unique nano PP-made filter is washable, with a lifespan exceeding 10 years with just a small attenuation effect. The total running cost should be much lower than traditional media filters.
the schematic diagram of mesp
MESP uses a charge grid to generate a corona discharge and release high energy electrons with a voltage of -10.2KV. These electrons form an avalanche effect and generate more and more electrons. Finally they collide with air molecules to produce lots of negative ions.
Once away from the corona zone, the negative ions are attracted to the surrounding air, negatively charging the air molecules, which then move towards the MESP positive plate under the action of a strong electric field.
The fine particles will block the negatively charged air molecules from flying and stick them together. The fine particles continue to absorb negatively charged molecules until they are saturated. The fine particles thus carry enough negative charges.
Once the fine particles carry enough negative charges, they move to the positive plate under the action of the dense MESP matrix electric field – and are firmly attracted by it.
How MESP Kill Viruses and Bacteria?
Phase 1. High voltage electrostatic field kills harmful microorganisms
Due to the micro-electrostatic filter’s high-voltage electrostatic effect of up to 10,000 volts, the cell wall of bacteria and protein shell of viruses which pass through will be instantly destroyed by strong coulomb force, thereby inactivated, instantly killed.
Phase 2. Any virus absorbed on the electrostatic filter will be continuously inactivated
MESP can high-effiently capture almost all airborne matters even small as 0.01μm in dimension, including biological aerosols with all kinds of viruses and bacteria. In the dust collection module, viruses and bacteria continue to be impacted by high-voltage electric fields, they gradually become carbonized and then inactivated.
The Strength of MESP
Kill Viruses & Bacteria
MESP® can efficiently kill 99.99% of viruses and 99.96% of bacteria with its strong electric field.
MESP To Fight
COVID-19 
High Efficiency
Differing from traditional media filters, the pressure drop is low with MESP filters because there is no need to force air through a matrix of small air passages. The physics makes its higher efficiency.
Washable Filter
The unique nano PP made filter is permanently washable and designed for more than 10 years lifespan. The total running cost should be much lower than traditional media-filter products.
Safe and Healthy
MESP filter works with about 1 µA of current at 6-10 kV, which can prevent from electric shock. Almost no ozone and any harmful byproducts. It releases negative ions beneficial to health while working.
High Usability
No worry about extreme change of humidity (up to 100%) and temperature (-15℃ to 50℃), our products will work properly all the time. MESP also has very good flame retardant properties.
Energy Saving
Low air pressure drop makes our products working with low power supply. Compared with the use of HEPA filters, the energy consumption of fans using MESP purifiers is 50% to 60%.
The Milestone of MESP
1824: Hohlfeld, a mathematics teacher in Büzig, Germany, first proposed that electricity can precipitate smoke particles.
1906: CF.G.Cottrell succeeded in experiments at the University of California, Berkeley, USA, and developed a Cottrell-type industrial electric dust collector.
1907: the first industrial electrostatic precipitator was built near San Francisco, USA, successfully processing industrial dusty gas.
1955: and forward: Electric dust removal technology has been widely used in industrial smoke and dust treatment and air purification.
1980: Masuda and others in Europe carried out the application of high-voltage narrow pulse power supply in the field of electrostatic dust removal.
1990: Bai Xiyao and others in China conducted research on the same-polarity soot-charged condensation technology of the DC electric field.
1996: Hever-9 Group successfully applied electrostatic technology to a large tunnel ventilation system for the first time.
1998: Pasic and others at Ohio University in USA first proposed the concept of "Membrane Electrostatic Precipitator. The film woven with advanced carbon fiber materials is used as the dust collecting electrode of ESP, and the dust collecting efficiency is remarkable.
2005: Woodruff and others in the United States first proposed the electrostatic dust collection air purification technology using an intense field dielectric.
2014: AirQuality Technology comprehensively promoted the application of MESP technology in industrial and civil fields, making significant progress in this area.
