Microwave deodorization

Principle: Microwave deodorization mainly utilizes multiple synergistic effects such as "microwave plasma strong electromagnetic field, special light source, photocatalyst" to efficiently crack the organic molecules in the odor, instantly converting the odorous gas in the sewage station into stable and harmless oxidants such as colorless and odorless carbon dioxide and water, achieving the purpose of deodorization and purification.

(a) Microwave electromagnetic thermal effect: Microwaves generate high-frequency oscillations in polar molecules through the high-frequency conversion of electromagnetic fields, which can easily cause polar molecules to lose electrons or some atoms, resulting in ionization phenomena. Moreover, they can increase the movement speed of ionized molecules by billions of times, greatly enhancing the impact energy of photons and achieving avalanche like decomposition of pollutants.

(b) Special light source and ozone: using high-energy beams of specific wavelengths to rapidly decompose oxygen molecules in the air to produce free oxygen, also known as reactive oxygen species · O. Due to the imbalance of positive and negative electrons carried by free oxygen, it needs to combine with oxygen molecules to produce sufficient ozone. By using high-energy beams and ozone to synergistically decompose and oxidize organic waste gas and odorous gases, high molecular weight substances with organic waste gas are degraded and converted into odorless and non-toxic low molecular weight compounds such as water and carbon dioxide.

(c) Photocatalyst: Photocatalyst is a general term for photocatalytic semiconductor materials represented by nanoscale materials. It is uniformly coated on the surface of the substrate and produces strong catalytic degradation function under the action of light. It can effectively degrade toxic and harmful gases in the air; Can effectively kill various bacteria and decompose toxins released by bacteria or fungi for harmless treatment; It also has functions such as deodorization, anti pollution, and air purification.

During the process of treating sewage sludge in sewage treatment plants, a large amount of odorous gases - odors - will inevitably be generated, which are mainly caused by gases produced by organic matter. The odor generally includes fishy odor [amine CH3NH2, CH3) 3N], ammonia odor [ammonia NH3], rotten meat odor [diamine NH2 (CH2) 4NH2], rotten egg odor (hydrogen sulfide H2S), rotten cabbage odor [organic sulfide (CH3) 2S], fecal odor [methyl indole C8H5NHCH3], and some special odors from production wastewater.

Microwave deodorization is more suitable for deodorization in sewage stations. This method has the advantages of large gas treatment capacity, high concentration, stable operation, high efficiency, small pressure loss, and small footprint. It is particularly suitable for high temperature and high humidity odors.