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11
2026
09
How to Choose a Spray Booth Filtration System: Dry vs. Wet Filtration
Dry-type and wet-type spray booths are two popular styles used in the coating industry. The primary difference between them lies in their filtration systems: dry-type booths utilize solid media—such as filter pads or specialized filtration equipment—to capture overspray, whereas wet-type booths employ liquid-based systems involving absorption, sedimentation, and water-based treatment processes.
These differences in filtration systems result in variations in booth performance, the types of workpieces that can be processed, and operating costs. QX Spray Booths provides a detailed explanation below.
Working principle of dry-type filtration:
Airflow directs overspray toward the filtration system, which typically employs four stages of filters. Paint particles are precisely removed through physical interception, multi-layer separation, and exhaust purification processes.
Working principle of wet-type filtration:
Airflow laden with paint particles is captured by water curtain and circulation systems and directed into a water tank, where the paint particles eventually settle to the bottom.
Key Differences:
(1) Dry-type spray booths: Lower initial investment; suitable for lower production volumes; require periodic filter replacement; easier to install and maintain; no wastewater treatment required.
(2) Wet-type spray booths: Higher operating costs; suitable for high-volume production; utilize continuous water circulation; require less frequent maintenance but necessitate periodic wastewater treatment.
Factors to Consider When Choosing a Spray Booth
When deciding between dry-type and wet-type spray booths for your workshop, consider the following factors:
· Production Volume: Dry-type booths are suitable for small-to-medium batch operations; wet-type booths are ideal for continuous, high-volume production.
· Maintenance & Management: Dry-type booths require frequent filter replacement; wet-type booths require wastewater treatment.
· Investment Budget: Dry-type booths have lower upfront costs but incur ongoing expenses for frequent filter replacement; wet-type booths require higher initial investment and wastewater treatment but offer lower unit operating costs compared to dry-type systems.
· Coating Quality: Dry-type booths have limited filtration capacity, making them suitable for workpieces with less stringent aesthetic requirements; wet-type booths use water as a medium for higher purification efficiency, making them ideal for products demanding high standards in appearance, quality, and paint film uniformity.
Where to Find an Experienced, Direct-Source Spray Booth Manufacturer
For enterprises looking to install professional spray booth systems in their production workshops, partnering with a trusted manufacturer that has extensive global experience—such as QX Spray Booth Factory—is crucial.
With over 20 years of manufacturing expertise and a wealth of experience in international partnerships, we invite you to review our company profile and contact us to ensure you receive a spray booth solution that meets your needs.
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