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Core Principle: Superior Adsorption Mechanism
The effectiveness of this Adsorption Walnut Shell Filter stems from the intrinsic properties of the walnut shell media. Its porous, irregular structure provides a vast surface area and strong adsorption capacity, efficiently trapping oil droplets and fine suspended solids . The media's natural hydrophilicity and oleophobicity further enhance its ability to capture oils while allowing clean water to pass through.
High-Efficiency Filtration & Regeneration Process
Wastewater flows through the bed of walnut shell filter media, where oils and solids are adsorbed and physically filtered. A key advantage of this Oil Removal Adsorption Walnut Shell Filter is its excellent regeneration capability. The system employs a low-intensity backwash process, often combined with mild mechanical agitation, to thoroughly clean the media without damaging it. This restores the filter's high-capacity performance and prepares it for the next cycle with minimal media loss.
Key Advantages for Target Markets
High Capacity & Efficiency: The High-Capacity Adsorption Walnut Shell Filter can handle high flow rates and influent with substantial contaminant loading. Modified walnut shell media has been shown to improve oil removal rates significantly, with studies indicating filtration oil removal rates increasing from 38.05% to 89.51% after modification.
Long-Lasting & Low Operational Cost: The walnut shell media is extremely durable, resistant to abrasion, and can withstand high pressure (up to 23.4 kgf/cm²) . Its longevity means it does not require frequent replacement, drastically reducing long-term operating costs.
Simple Operation & Maintenance: The backwash process is straightforward, typically using filtered water without the need for additional chemicals or air scouring, making it easy to manage .
Proven Reliability: The robust construction and stable chemical properties of the media ensure consistent performance even in challenging conditions.
Wide Application Range
This versatile filter is indispensable across numerous industries:
Oilfield & Petrochemical: Ideal for treating oilfield produced water and refinery wastewater, with modified media capable of reducing turbidity by up to 83.4%.
Metal Processing & Plating: Effectively removes heavy metals (e.g., Cr, Cu, Zn, Ni) with removal rates exceeding 90% in some cases, and is also effective for Mn²⁺ and Cr(VI) removal.
Textile, Tannery, & Food Processing: Excellently removes oils, organic matter, and color from industrial effluent.
General Industrial Wastewater: Serves as a reliable pretreatment or polishing stage for various mixed industrial waste streams.
FAQ
Q: What is the typical efficiency and capacity of this filter?
A: As a High-Capacity Oil Removal Walnut Shell Filter, it is designed for high flow rates. Oil removal efficiency can be very high, with modified media achieving over 89% in treated oily wastewater . The exact capacity and efficiency depend on factors like media type (standard or modified), feed water quality, and filter design.
Q: How is the backwash conducted, and what is the media consumption?
A: Backwashing typically uses filtered water with optional mild mechanical stirring. The rugged nature of the walnut shell media results in very low media loss during backwashing, and its long service life means it may not need replacement for years.
Q: Can the filter media be modified for enhanced performance?
A: Yes. Specialized modifications (e.g., creating super-hydrophilic/underwater super-oleophobic surfaces) can significantly boost the performance of the Adsorption Walnut Shell Filter, leading to higher oil removal efficiency (up to 84.01% filtration efficiency reported for one modified type) and improved solids rejection.
Q: What is the expected lifespan of the walnut shell media?
A: The media is known for its durability. Due to its high hardness and abrasion resistance, it can last for many years without replacement, contributing to very low operating costs.
Q: Do you offer technical support for installation and operation?
A: Yes. We provide comprehensive technical documentation and support. Our team can assist with installation guidance and operational troubleshooting to ensure optimal performance.
