PP Melt Blown Filter Cartridge 20 Micron 40 Inch: High Flow Depth Filter For High Turbidity Raw Water Pretreatment

Product Overview

PP Melt Blown Filter Cartridge 20 Micron 40 Inch is a high-flow coarse-grade depth filter specially designed for high-turbidity raw water conditions. Adopting advanced melt-blown integral forming technology, pure polypropylene raw materials are melted and spun into continuous fiber layers, achieving binder-free and pollution-free filtration. The unique gradient pore structure enables outer fiber layers to trap large coarse impurities, while inner dense fibers intercept fine particles above 20μm, realizing full three-dimensional depth filtration. Standard 40-inch industrial size, 60mm outer diameter and 30mm inner diameter ensure full compatibility with all mainstream 40-inch filter housings for fast on-site replacement. Compared with fine-grade melt-blown filters, the 20μm model features larger pore size, higher flow rate and stronger anti-clogging performance, perfectly solving the problem of easy blockage when filtering high-turbidity raw water.

Working Principle

This 20 micron PP melt-blown filter follows the outside-in gradient depth filtration principle. When high-turbidity industrial raw water flows through the multi-layer melt-blown fiber matrix, coarse sediment, rust debris and large flocs are trapped by the loose outer fiber layers. Medium suspended particles are intercepted in the middle transition layer, and fine impurities larger than 20μm are deeply captured by the dense inner fiber layer. Different from traditional surface filtration, pollutants are evenly stored inside the entire filter body, maximizing dirt holding capacity and greatly extending the service cycle. The integrated self-supporting fiber structure maintains stable shape under long-term high-flow operation and pressure fluctuation, ensuring continuous and stable coarse filtration performance.

Core Technical Specifications

Core Advantages

1. Strong anti-clogging performance: 

Optimized 20μm large pore structure adapts to high-turbidity raw water with massive sediments, avoiding frequent replacement and reducing maintenance frequency.

2. Ultra-high flow throughput: 

Low-resistance fiber structure ensures smooth liquid passage, greatly improving system water yield and reducing pump operating load.

3. Large depth dirt holding capacity: 

Multi-layer gradient fiber design stores pollutants inside the filter body, effectively extending service life compared with ordinary single-layer filters.

4. Pure pollution-free material: 

Binder-free one-step molding process with 100% virgin PP, no organic leaching, safe for drinking water and industrial fluid treatment.

5. Excellent chemical stability: 

Resists weak acid, weak alkali and neutral aqueous liquids, suitable for most harsh industrial coarse filtration working conditions.

Main Application Scenarios

High-turbidity river water, reservoir water and well water primary pretreatment

Mining water, construction wastewater and landscape water coarse impurity removal

Power plant cooling water, circulating water and boiler feed water pre-filtration

Municipal water plant front-stage turbidity reduction and impurity interception

RO/UF membrane system first-stage protection to reduce fine filter load

Large-flow industrial water system primary purification treatment

Compatibility & Cross Reference

FAQ

Q1: What is the difference between 20μm and 10μm melt blown filters?

A1: The 20μm filter has larger pores, higher flow rate and better anti-clogging ability, specially used for high-turbidity raw water coarse filtration. The 10μm model is for conventional standard pre-filtration with higher precision requirements.

Q2: Can this 20μm melt blown filter be reused?

A2: It is a disposable depth filter. Internal fiber pores are easily blocked by sediments and colloids, and cleaning cannot restore the original filtration performance, so repeated use is not recommended.

Q3: Is it suitable for 24-hour continuous operation?

A3: Yes. With ultra-low pressure drop and stable fiber structure, it fully supports long-term uninterrupted operation of large-flow industrial water treatment systems.

Q4: Are customized sizes available?

A4: Yes, 10/20/30/40 inch full sizes and special micron grades can be customized for bulk project orders.

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