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Electrostatic Precipitator vs Bag Filter: Efficiency, Cost and Environmental Performance Comparison

1. Dust Removal Efficiency Comparison

Electrostatic Precipitator (ESP):
Suitable for high-concentration, large flue gas volume dust removal (such as coal-fired power plants, steel sintering, etc.), with collection efficiency for fine particles (PM2.5) reaching over 99%. However, its performance is sensitive to dust resistivity (both too high or too low resistivity affects efficiency).

Bag Filter:
Provides higher filtration efficiency for ultrafine dust (such as in cement, pharmaceutical industries, typically >99.9%), and is not limited by dust resistivity. However, it requires regular bag replacement, and long-term operational stability depends on maintenance level.

Anhui Tiankang can customize solutions according to working conditions. For example, in steel industry applications with high-humidity flue gas, it adopts anti-condensation filter bags pre-coating technology to improve bag filter stability; in power industry applications, it optimizes ESP plate layout to handle high-resistivity dust.

2. Cost Comparison

Initial Investment:
ESP typically has higher initial costs than bag filters due to its high-voltage power supply system and large steel structure, but it's more suitable for high-temperature flue gas (above 400°C).

Operation and Maintenance Costs:
Bag replacement (especially in corrosive conditions) is the main expense for industrial electrostatic precipitator filters , while ESP has higher power consumption (especially when needing humidity conditioning for high-resistivity dust).

Anhui Tiankang provides life-cycle cost optimization solutions , such as using membrane-coated filter bags in cement plants to extend service life, or equipping ESP with intelligent high-voltage power supplies to reduce power consumption.

3. Environmental Performance and Adaptability

Emission Standards:
Bag filters can more easily meet ultra-low emission standards (such as <10mg/m³), while ESP performs better in collaborative treatment (such as post desulfurization and denitrification flue gas).

Complex Working Conditions:
ESP has stronger resistance to high temperatures and corrosion, making it suitable for applications like steel sintering machine heads; industrial electrostatic precipitator filters require special filter materials when handling oily mist or sticky dust (such as biomass combustion).

Anhui Tiankang's VOC treatment systems (such as RTO, activated carbon adsorption) can be designed in coordination with dust removal equipment to achieve integrated treatment of multiple pollutants.

Special Dust Treatment in Pharmaceutical Industry: Selection and Maintenance of Explosion-Proof Baghouse Filters

Anhui Tiankang Environmental Technology Co., Ltd. , as a leading environmental technology enterprise in China, has rich experience in dust control for the pharmaceutical industry. For the special characteristics of pharmaceutical dust, we provide professional explosion-proof baghouse filter solutions.

1. Characteristics and Challenges of Pharmaceutical Dust

Dust generated during pharmaceutical production typically has the following characteristics:

1. Flammable and explosive: Active Pharmaceutical Ingredients (API) dust has low explosion limits (LEL)
2. Strong adhesion: Some drug components easily adhere to filter surfaces
3. High hygiene requirements: Must comply with GMP cleanliness standards
4. Corrosiveness: Some chemical raw materials may be corrosive

2. Key Points for Selecting Explosion-Proof Baghouse Filters

Anhui Tiankang Environmental Technology Co., Ltd. provides customized selection solutions according to different pharmaceutical processes:

3. Key Maintenance Points

1. Regular inspection :
   • Monthly inspection of anti-static grounding devices
   • Quarterly testing of rupture disc sensitivity
2. Filter bag replacement cycle :
   • Normal conditions: 2-3 years
   • High humidity/corrosive conditions: 1-1.5 years
3. Cleaning and disinfection :
   • CIP online cleaning system
   • Regular disinfection treatment

Anhui Tiankang Environmental Technology Co., Ltd. provides: - Customized maintenance plans - Remote monitoring systems - Emergency repair services

4. Success Case

Our solution for a well-known pharmaceutical company: - Air volume: 25,000m³/h - Filtration area: 500m² - Anti-static PTFE membrane filter bags - Equipped with rupture discs spark detection system - Emission concentration: <5mg/m³

5. Our Advantages

1. Rich experience : Serving multiple GMP-certified pharmaceutical companies
2. Customization capability : Providing personalized designs based on process characteristics
3. Full-cycle service : One-stop service from design, installation to operation
4. Technical R&D : Continuous optimization of explosion-proof dust collection technology

Anhui Tiankang Environmental Technology Co., Ltd. is committed to providing pharmaceutical companies with safe, efficient and compliant dust control solutions to help achieve clean production. Please contact our technical team for more professional advice.

Company branches: - Wuxi Company: Wuxi Mingtian Environmental Protection Equipment Co., Ltd. - Anhui Company: Anhui Tiankang Environmental Technology Co., Ltd.