Electrostatic precipitator (ESP) is a machine used in factories to clean solid waste, for example ash from exhaust gases, thus allowing a clean exit of exhaust gases through the chimney. The electrostatic precipitator works by first allowing exhaust gases containing solid waste particles to pass through the nozzle, as shown in the diagram below. Then the exhaust gas passes through the inlet gas distribution, which evenly distributes the gas as shown below in turquoise color, and begins to pass through the discharge electrodes and collector plates, which are shown in the figure respectively. red and blue diagram. The discharge electrodes, powered by high voltage direct current, negatively ionize the gas as well as other solid waste particles. The collector plates are also charged with high voltage electricity, but this is positively charged, thus attracting negatively charged solid particles, because oppositely charged particles attract each other. This allows clean exhaust gases to pass through the other end, while solid waste particles are trapped in the header plates. Eventually, when there are enough solid waste particles collected on the collector plates, the collector plates shake off the collected waste, where it falls to the bottom of the shaft, as shown in the diagram as the "Hopper". http://www.babcock. com/products/Documents/dryESP_illustration.jpgMany cities are currently affected by air pollution and Hong Kong is one example. Hong Kong's air pollution level often exceeds the air pollution level recommended by the World Health Organization, and Hong Kong's pollution index was "very high", meaning it exceeded 101, 34% of the time (Hunt, 2011). Another example, when Hong Kong exceeds...... middle of paper...... and many regulations in some countries force factories to use one, it puts a lot of stress and increases costs for the factory operators. , and could result in job losses in order to purchase and operate the ESP. This might affect economic growth, but on the other hand, ESP will result in cleaner air, which caused the price of the real estate market to increase due to cleaner air (Rich 2011), which will help a sluggish economy, for example in the United States. believe that the PES has a rather positive impact on society in general. PES have a positive impact on the environment and health, but have both economic advantages and disadvantages. However, I believe that cooperatives and factories have a responsibility to combat their pollution, because they created it in the first place, although this may require a certain amount of money and investment..