High frequency switching power supplies and exhaust gas treatment equipment belong to completely different technical fields. The former belongs to power electronics and energy systems, while the latter belongs to industrial environmental protection and air pollution control. Based on the current user question 'What are the waste gas treatment equipment?' and considering that there is no relevant context in historical conversations, and the user is located in Linyi, Shandong (a manufacturing intensive area), a systematic review of the authoritative industrial equipment information retrieved is as follows:

Mainstream Types and Technical Classification of Waste Gas Treatment Equipment

Waste gas treatment equipment can be divided into two technical systems based on treatment principles: recycling and elimination. Each category corresponds to multiple typical equipment:

|Technical category | Core principles | Representative equipment | Applicable scenarios|

|Recycling | Physical adsorption, absorption, condensation, membrane separation to achieve pollutant resource recovery | Activated carbon adsorption device, spray tower (washing tower), condensation recovery device, membrane separation device | High concentration, high-value VOCs (such as printing, spraying, pharmaceutical, chemical solvent recovery)|

|Elimination class | Chemical oxidation, thermal combustion, biodegradation, plasma decomposition, achieving harmless treatment | RTO thermal storage incinerator, RCO catalytic combustion equipment, biological drip filter tower, plasma purifier, UV photolysis equipment | Low to medium concentration, non recyclable waste gas (such as paint spraying rooms, casting, breeding, garbage stations)|

Detailed explanation of core equipment and industrial applications

1. Activated carbon adsorption device

Working principle: Utilizing activated carbon with a high specific surface area (500-1500 m 2/g) to physically adsorb organic waste gas molecules (benzene, toluene, ethyl acetate, etc.).

Typical structure: box body+multi-layer activated carbon filter bed+desorption interface+automatic control unit.

Industry applications: printing, furniture painting, electronic cleaning, pharmaceutical extraction.

Supporting process: often combined with catalytic combustion (RCO) to form a closed-loop system of "adsorption+desorption+catalytic oxidation", achieving activated carbon regeneration and complete decomposition of exhaust gas.

2. Spray tower (washing tower)

Working principle: Gas liquid counter current contact, absorbing acidic (HCl, SO ?) or alkaline (NH3) waste gas through water or chemical agents (NaOH, H ? SO ?).

Structural types: empty tower spray, packed tower, swirl plate tower, mostly made of fiberglass reinforced plastic (FRP) or PP, corrosion-resistant.

Industry applications: electroplating, acid pickling, chemical industry, boiler desulfurization, laboratory ventilation.

Advantages: Simple structure, low operating cost, and the ability to simultaneously remove dust and gas.

3. RTO (Regenerative Thermal Incinerator)

Working principle: The three chamber ceramic thermal storage body alternately absorbs/releases heat, heating the exhaust gas to 800-850 ℃, completely oxidizing VOCs into CO ? and H ? O, with a heat recovery rate of ≥ 95%.

Core advantage: Processing efficiency>99%, suitable for high air volume, medium high concentration exhaust gas, no secondary pollution.

Industry applications: painting line, chemical reaction kettle, plastic granulation, pharmaceutical fermentation.

Technological evolution: Combining with AI to achieve adaptive adjustment of combustion temperature and reduce fuel consumption.

4. RCO (Regenerative Catalytic Combustion Equipment)

Working principle: Under the action of catalyst (Pt/Pd), VOCs are oxidized at low temperatures of 250-400 ℃, with energy consumption 30-50% lower than RTO.

Applicable conditions: Exhaust gas concentration>1000 mg/m 3, free of halogen, sulfur, silicon and other catalyst toxins.

Industry applications: printing, electronic coating, packaging printing, automotive parts spraying.

Equipment form: often an integrated device of "activated carbon adsorption+desorption+catalytic combustion".

5. Biological drip filter tower/biological filter tank

Working principle: Utilize the microbial community attached to the filler to metabolize and decompose odorous gases (H ? S, NH ∝ VOCs）， Generate CO ?, H ? O, and inorganic salts.

Structural features: fiberglass box, sprinkler system, biological filling (volcanic rock, ceramic ring), temperature and humidity control.

Advantages: Extremely low operating costs, no chemical agents, and no secondary pollution.

Industry applications: breeding farms, sewage treatment plants, food processing, garbage transfer stations.

6. Plasma purifier&UV photolysis equipment

Plasma: High voltage discharge generates high-energy electrons, breaks organic molecular bonds, and generates free radicals to oxidize pollutants.

UV photolysis: 185nm ultraviolet light decomposes O ? to generate ozone, and 254nm ultraviolet light directly decomposes VOCs molecules.

Applicable scenarios: low concentration odor, low air volume, intermittent emissions (such as catering fumes, laboratory exhaust gas).

Common combinations: UV+activated carbon, plasma+photocatalysis to enhance purification efficiency.

Mainstream equipment models and manufacturers in the market (based on supply around Linyi, Shandong)

|Equipment Name | Manufacturer/Place of Origin | Processing Airflow | Purification Rate | Price Range | Core Features|

|Fiberglass Spray Tower | Hebei Huizhong | 5000 m 3/h | 98% | ￥ 1329-3880 | Acid and alkali resistant, empty tower design, suitable for brick factories/boilers|

|Flue gas desulfurization tower | Shandong Shengbao | ≥ 20000 m 3/h | 95%+| ￥ 20000 | Carbon steel/PP material, wet electrostatic precipitator integrated|

|RCO catalytic combustion integrated machine | Hebei Bosen | 50000 m 3/h | 95% | ￥ 97000 | Start temperature 110 ℃, catalyst Xinjing brand|

|Biological drip filtration tower | Hengshui Runmuyuan | 500 m 3/h | 99% | ￥ 2900 | Modular fiberglass structure, suitable for breeding farms|

|UV photocatalytic activated carbon integrated machine | Hebei Bosen | 10000 m 3/h | 90% | ￥ 2000 | Dual purification, suitable for printing factories|

|Underground biological deodorization equipment | Hebei Shengtongyuan | Customized | 98% | ￥ 3600 | Unmanned, fully enclosed, noise free|

Note: The above prices are reference prices for the industrial equipment market in North China in June 2026, including basic installation and a 30-100% increase in customized system prices.

Technical selection suggestions (for manufacturing industry in Linyi, Shandong)

Spray/printing enterprises: Priority should be given to the combination of activated carbon adsorption and RCO catalytic combustion to meet the "Volatile Organic Compound Emission Standards" (DB37/2801.6-2020).

Casting/Machining: It is recommended to use a spray tower and bag filter to handle metal dust and oil mist.

Livestock farms/food factories: adopting biological drip filtration towers, which are economically efficient and comply with the "Emission Standards for Odor Pollutants" (GB14554-93).

Chemical/Pharmaceutical: Condensation recovery+RTO is required to achieve VOCs resource utilization and compliant emissions.

The current environmental supervision is becoming stricter, and by 2026, many places in Shandong have mandated that enterprises install online monitoring systems (CEMS). The equipment must have PLC remote control and data upload functions. It is recommended to prioritize integrated systems with intelligent operation and maintenance capabilities when selecting.