Advantages and Disadvantages of Other Industrial Waste Gas Treatment Solutions

1) Oxidation method

The industrial waste gas solution mainly uses strong oxidants such as chlorine oxides, ozone, hydrogen peroxide, and potassium permanganate to destroy pollutant molecules, with fast reaction speed and simple processing equipment. The disadvantage is that the purification efficiency is not high and the amount of oxidant is difficult to control.

2) Absorption method

A method of using water or chemical absorbent to absorb and remove chemical waste gases by utilizing the physical and chemical properties of pollutants. This method is designed with reasonable operation, high removal efficiency, and convenient operation management. However, the equipment and operation management requirements are extremely high, and only pollutants that can dissolve in or react with the absorption liquid can be effectively removed.

3) Adsorption method

The characteristic of this method is that when pollutants pass through adsorption towers equipped with adsorbents (such as activated carbon, hydrophobic molecular sieves, etc.), the strong adsorption force of the adsorbents on the pollutants is utilized to purify the exhaust gas. This industrial waste gas solution has simple equipment and good removal effect, mainly used for the final treatment of purification processes. The disadvantages of this method are low treatment efficiency for high concentration chemical waste gas, large footprint, high gas resistance, frequent replacement or regeneration of adsorbents, and difficulty in collecting and ultimately discharging the desorbed gas back into the atmosphere. This is an incomplete solution

4) Biological Law

Physical methods are a processing technique that has been studied in recent years. The most prominent advantage of this method is its low processing cost. There is basically no secondary pollution. Although this biological method has significant effects in purifying low concentration organic pollutants, it has the advantages of low energy consumption and high gas resistance. Degradation rate, very slow. The device has a large volume and is susceptible to the influence of pollutant concentration and temperature, so this method is only applicable. For the treatment of hydrophilic and biodegradable substances, there are still some difficulties in the treatment of hydrophobic and difficult to biodegrade substances.

5) Photocatalytic technology

Photocatalytic oxidation or nano metal oxide photocatalysis has been a hot research topic in recent years, but the degradation efficiency of this industrial waste gas treatment technology is controlled by the diffusion rate at the interface between pollutants and catalyst surfaces, and the catalyst price is expensive. Easy to be poisoned and ineffective. It is difficult to use for large-scale industrial applications and is limited to experimental research and small-scale air volume applications.