When handling metal pickling, phosphating and electroplating rinse water for metal finishing workshops, filtration engineers and procurement teams evaluate various Liquid Filters and Self Cleaning Filter options to protect downstream RO membrane systems. Metal surface treatment wastewater contains suspended metal hydroxides, fine metal powder and acidic residues, which can rapidly foul filtration media and damage RO membranes without proper prefiltration. The HF629-50 high flow filter cartridge is engineered for this challenging acidic wastewater condition. It serves as a fully interchangeable alternative to Pentair high flow filter elements, delivering stable particle retention and chemical resistance to extend the service life of your RO pretreatment system.
Product Introduction
As a reliable industrial water filter, the high flow filter cartridge is installed inside the water filter housing to capture solid contaminants, and it can work together with a self-cleaning filter to create multi-stage protection for RO systems. Metal surface treatment rinse water and wastewater often carry fine metal particles, precipitate sludge and weak acidic substances, which impose heavy chemical and mechanical load on filter elements. Many metal finishing factories rely on imported Pentair filter cartridges, yet they face high spare part costs and long delivery lead times. Our HF629-50 high flow filter cartridge adopts reinforced pleated polypropylene media with excellent acid resistance. It matches the dimensions and installation interface of Pentair filter cartridges completely, so it can be directly installed into your existing water filter housing without modification, effectively removing metal solids before the water enters the RO unit.
Working Principle
Metal surface treatment wastewater flows from the outer layer to the inner core through the pleated media of HF629-50 high flow filter cartridge. Fine metal powder, hydroxide precipitates and suspended sludge are trapped on the pleated surface and inside the depth filter layer. The clean liquid flows through the central core and flows out of the filter housing toward the RO system. The reinforced PP filter media maintains stable structure under weak acidic environment, preventing media breakdown and fiber shedding. The upstream self-cleaning filter removes large solid debris in advance, reducing the particle load of HF629-50 and slowing the rising speed of differential pressure.
Technical Specifications Table
| Item | Parameter |
|---|---|
| Model | HF629-50 |
| Product Type | High Flow Pleated Filter Cartridge |
| Filter Media | Reinforced Polypropylene |
| End Cap Material | PP |
| Length | 50 inch |
| Outer Diameter | 6 inch |
| Micron Rating | 1μm ~50μm (customizable) |
| Max Continuous Operating Temperature | 70℃ |
| Max Allowable Differential Pressure | 3.0 bar |
| End Cap Style | DOE / SOE optional |
| Compatible Housing | Standard 50 inch high flow filter housing |
Core Advantages
1. Optimized for Weak Acidic Metal Treatment Wastewater
The reinforced PP media resists weak acid corrosion from pickling and phosphating rinse water, and efficiently intercepts metal hydroxide sludge and fine metal powder. It avoids rapid media damage caused by chemical erosion.
2. Drop-in Replacement for Pentair High Flow Filter Cartridges
HF629-50 adopts the same size and end cap structure as Pentair original elements. No housing modification is needed. It cuts your purchasing expense and shortens spare part delivery cycle.
3.Large Dirt Holding Capacity for High-solids Wastewater
Wide pleated structure holds large volume of metal sludge. Longer service cycle reduces filter replacement frequency and minimizes production downtime for metal surface treatment workshops.
4. Low Risk of Fiber Shedding
Integrated hot-melt pleating technology eliminates loose fiber shedding. It prevents fine fiber contamination entering RO membranes and avoids irreversible membrane fouling.
5. Compatible With Multi-stage Pretreatment System
Combined with self-cleaning filter as primary filtration, it builds graded filtration. The upstream self-cleaning filter removes coarse impurities and reduces the pollutant burden on HF629-50 cartridges.
Application Scenarios
Pickling rinse water filtration in metal surface treatment workshops
Phosphating process water pretreatment
Electroplating wastewater recovery and reuse
Automotive metal parts spraying wastewater filtration
RO pretreatment for metal finishing wastewater recycling
Hardware factory circulating water purification
FAQ
Q1: Can HF629-50 withstand strong acid wastewater?
A1: It fits weak acidic water of metal pickling and phosphating. For high-concentration strong acid working conditions, please consult our technical team for customized material options.
Q2: Can HF629-50 directly replace Pentair high flow filter cartridge?
A2: Yes. The overall dimension, end cap and sealing interface are fully consistent, it can be installed into your existing water filter housing without any changes.
Q3: What micron rating is recommended for metal surface treatment wastewater?
A3: 5μm or 10μm is the most common choice. If raw water turbidity is very high, install a self-cleaning filter at the front to reduce solid load.
Q4: When should we replace the HF629-50 filter cartridge?
A4: Replace the filter cartridge when the inlet and outlet differential pressure reaches 2.0~2.5 bar, to avoid particle breakthrough and protect downstream RO membranes.
Q5: Can HF629-50 filter remove dissolved metal ions in wastewater?
A5: No. It can only intercept solid metal precipitates and suspended particles. Dissolved metal ions require RO membrane or chemical precipitation treatment.
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