MBR-814-35 Large Area Membrane | 35m² | 2100mm Length

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Water Treatment Membrane Series

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MBR-814-35

Membrane Bioreactor (MBR) is an advanced wastewater treatment technology that combines activated sludge process with membrane filtration.

Product Introduction

Membrane Bioreactor (MBR) is an advanced wastewater treatment technology that combines activated sludge process with membrane filtration. It replaces the secondary sedimentation tank in traditional processes with membrane modules, achieving efficient solid-liquid separation.

Application Field

MBR is commonly used for seawater desalination and domestic sewage treatment

Widely used in hospitals, centralized water consumption in rural areas, research units

Widely used in urban sewage, industrial wastewater treatment and water resources recycling

Product Features

1：

High-quality Effluent: Stable output of SS-free water, meeting strict reuse standards.

2：

Small Footprint: Compact design, 30-50% smaller than conventional systems.

3：

High MLSS: Operates at 8,000-12,000 mg/L MLSS, boosting treatment capacity.

4：

Low Sludge Production: Reduces sludge disposal costs.

5：

Easy Automation: Simple operation, low labor intensity.

6：

Long Membrane Life: Robust PVDF material with proper maintenance.

Product Range & Specifications

2.1 Membrane Material

PVDF (Polyvinylidene Fluoride): Excellent chemical resistance, mechanical strength, and anti-fouling properties.
Nominal Pore Size: 0.03μm (microfiltration).

2.2 Module Types

2.2.1 Hollow Fiber (Submerged)

Model: MBR-814-35
Effective Area: 35m²/module
Dimensions (L*W*H): 814*42*2100mm
Dry Weight: ~22kg
Design Flux: 15-25 LMH

Technical Parameters

Item	Standard Value
Operating Temp	5-40°C
pH Range	2-10 (continuous); 2-12 (cleaning)
Initial TMP	< 10 kPa
Max. TMP	35 kPa
Aeration Intensity	50-70 Nm³/m²·h
Design Flux	15-25 LMH (domestic sewage)
Backwash Flux	20-60 LMH
Max. Backwash Pressure	70 kPa

Installation & Commissioning

4.1 Pre-installation

Check components for damage.
Prepare foundation/rack level.
Ensure 1 mm fine screeningfor influent.

4.2 Installation Steps

Place module in membrane tank.
Connect permeate pipe, aeration pipe, and fittings.
Fill tank with water to submerge membrane.
Test for leaks.

4.3 Commissioning

Start aeration first (30 min).
Initiate suction pump at low flux(50% design).
Gradually increase flux over 1-2 weeks.
Monitor TMP daily.

Operation & Maintenance

5.1 Normal Operation

Continuous aerationfor scouring (DO > 2 mg/L).
Intermittent suction: 8min on / 2 min off.
Maintain MLSS 8,000-12,000 mg/L.

5.2 Daily Maintenance

Record TMP, flux, temperature, pH.
Inspect for broken fibers (replace if >5% broken).
Check aeration uniformity.

5.3 Cleaning

5.3.1 Physical Cleaning (Weekly)

Backwash: Permeate, 30-60 sec.
Relaxation: Stop suction, 30-60 sec.

5.3.2 Chemical Cleaning (Monthly / When TMP > 30 kPa)

Offline Clean:

Step 1 (Alkaline): 0.3-0.5% NaClO, soak 2-4 h.
Step 2 (Acid): 0.5-1.0% Citric Acid, soak 1-2 h.
1. Rinse thoroughly with clean water.

5.4 Shutdown

Short-term (<7 days): Keep aeration on.
Long-term (>7 days): Chemical clean, soak in 0.5% NaClO, keep moist.

Troubleshooting

Problem	Cause	Solution
TMP rises fast	Fouling; high MLSS; low aeration	Clean; reduce MLSS; increase aeration
Low permeate	Clogged; broken fibers; air lock	Clean; replace; bleed air
Poor quality	Broken fibers; damaged seals	Replace module; repair seals

Safety & Handling

Avoid contact with strong oxidizers(concentrated NaClO).

Wear gloves/goggleswhen handling chemicals.

Do not drop or impact modules.

Protect from freezing(<0°C).

Packaging & Storage

Packed in carton with plastic film.

Store indoors, dry, 5-30°C.

Keep sealed to prevent drying.

Quality Assurance

12-month warrantyagainst material defects.

Warranty void if misused, improper cleaning, or unauthorized repair.

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Anhui Cooperate Environmental Technology Co., Ltd.