Technical Spotlight: Unlocking the Efficiency of the ZP Fiber Rotary Disk Filter

In the current landscape of wastewater treatment, upgrading facilities from Class 1B to Class 1A discharge standards and maximizing industrial water reuse (such as in steel mills, power plants, and the paper industry) demand highly efficient and reliable filtration systems. As a water treatment technician, evaluating the Nanjing Lanjiang ZP Series Fiber Rotary Disk Filter reveals several compelling engineering advantages that make it an exceptional choice for modern tertiary treatment.

Here are the core technical features and most attractive selling points of the ZP Fiber Rotary Disk Filter:

1. Ultra-Low Energy Consumption & Operating Costs

One of the most significant advantages of this system is its sheer energy efficiency. During the normal filtration process, the raw water passes through the fiber filter cloth entirely driven by gravity. This means zero energy consumption occurs during the actual filtration phase. Power is only required when the monitoring components trigger the backwash pumps and drive motors. Furthermore, the backwash system uses the already filtered water from the central drum, making the energy highly concentrated and exceptionally efficient.

2. Continuous Operation with Zero Downtime

Unlike traditional sand filters that must be taken offline to be cleaned, the ZP Fiber Rotary Disk Filter is designed for fully automatic, continuous operation. The system operates on a fully submerged principle. When the impurities accumulate and the liquid level triggers the backwashing process, the disks rotate, and the backwash suction mechanism cleans the cloth. Crucially, the filtration process continues uninterrupted even while the backwashing sequence is actively running, ensuring a constant flow of treated effluent.

3. Superior Filtration Precision & Shock Resistance

The proprietary filter cloth is a major technological highlight. It features a polyester woven base with polyamide free fibers, creating a pile height of 10-15 mm.

• High Precision: This structure forms a dense, floc-like filtration layer with a 5-8 mm depth, achieving a tiny filtration pore size of up to 10μm. By selecting the appropriate cloth, the system consistently delivers exceptional effluent quality with Suspended Solids (SS) ≤ 5mg/L.

• Shock Resistance: The robust nature of the filter media allows the system to handle unexpected load spikes, successfully tolerating influent SS concentrations up to 50mg/L without compromising performance.

• High Flux: Despite the fine filtration, the system maintains a high filtration flux of no less than 15-20 m³/m²/h.

4. Compact Footprint & Minimal Head Loss

Space is often at a premium in plant upgrades. By utilizing vertically arranged filter disks around a central drum (available in diameters of 1.2m, 2.0m, and 3.0m), the filter maximizes vertical space utilization. This results in a highly compact footprint compared to conventional filters. Additionally, the system operates with an exceptionally low head loss—typically designed at just 300 mm—which minimizes the need for high-lift intermediate pumping stations and further reduces the overall hydraulic footprint of the plant.