DF series PVDF flat sheet membrane modules for submerged MBR applications. Features 0.1 μm pore size with integrated aeration box for continuous membrane scouring. Individually replaceable membrane elements, stainless steel frame, and 10–20× lower energy consumption than external cross-flow systems. Available in 80–225 m² configurations producing 32–135 m³/day.
The Zhongsheng DF series flat sheet membrane module is a high-performance submerged membrane bioreactor (MBR) component designed to replace conventional secondary clarifiers in activated sludge wastewater treatment systems. By physically separating biomass from treated effluent at the 0.1 μm level, the DF module dramatically improves effluent quality while enabling operation at biomass concentrations 3–5× higher than conventional systems — delivering more treatment in less space.
Unlike pressurized external (side-stream) membrane systems, the DF module operates as a submerged, gravity-driven unit with integrated aeration. This design reduces energy consumption by 10–20 times compared to cross-flow membrane configurations, while the continuous air scouring of flat sheet surfaces prevents fouling and scaling for reliable long-term operation.
The DF membrane module consists of two main sections:
The module operates fully submerged in the aerobic zone of the bioreactor. As the core component of an MBR system, it replaces the secondary clarifier, tertiary filtration, and disinfection stages of conventional treatment — delivering effluent quality suitable for direct non-potable water reuse.
| Parameter | DF80-100 | DF150-100 | DF150-150 |
|---|---|---|---|
| Permeate Output | 32 – 48 m³/day | 60 – 90 m³/day | 90 – 135 m³/day |
| Number of Membrane Elements | 100 | 100 | 150 |
| Total Membrane Area | 80 m² | 150 m² | 225 m² |
| Membrane Material | PVDF (Polyvinylidene Fluoride) | ||
| Pore Size | 0.1 μm | ||
| Dimensions (L × W × H) | 1,600 × 600 × 1,700 mm | 1,600 × 630 × 2,500 mm | 2,350 × 630 × 2,500 mm |
| Weight | 450 kg (992 lbs) | 700 kg (1,543 lbs) | 1,000 kg (2,205 lbs) |
| Frame Material | Stainless Steel | ||
| Aeration Pipe Material | UPVC | ||
| Permeate Collection Pipe | UPVC | ||
The DF series delivers the performance and reliability demanded by modern MBR installations at a competitive price point. With individually replaceable membrane elements that simplify maintenance, integrated aeration for continuous fouling prevention, and energy consumption 10–20× lower than external membrane systems, the DF module offers the lowest lifecycle cost for submerged MBR applications. The robust stainless steel frame and proven PVDF membrane chemistry ensure years of reliable operation in demanding municipal and industrial wastewater environments. Whether you are specifying membranes for a new MBR plant or sourcing replacements for an existing system, Zhongsheng DF modules deliver proven performance backed by comprehensive technical support.
Models range from DF-20 (20 m²) to DF-500 (500 m²) membrane area per module.
15–25 LMH (liters per m² per hour) depending on wastewater characteristics.
Yes, the modular cassette design allows easy drop-in replacement or capacity expansion in existing MBR tanks.
The pore size is 0.1–0.4 μm, effectively rejecting bacteria, suspended solids, and most pathogens.
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