MBR Membrane Modules (for MBR)

Functional Logic: The system operates by directly submerging the membrane module in the biological aeration tank. The sludge is reliably retained by the membrane, while clean water permeates through the membrane pores under negative pressure, entering the diversion channel and collecting into the manifold for discharge. Simultaneously, bubbles generated by bottom aeration and the resulting upward water flow continuously scour the membrane surface, providing a physical cleaning effect that significantly delays membrane fouling.

Applications:
1.Challenging Industrial Wastewater: Ideal for treating complex effluents including landfill leachate, electroplating/chemical wastewater, medical wastewater, and industrial wastewater with high salinity or high COD levels.
2.Municipal & Decentralized Systems: Perfectly suited for the upgrading and retrofitting of municipal wastewater treatment plants, as well as rural decentralized wastewater treatment stations.
3.Demanding Project Conditions: Highly effective for projects characterized by highly variable influent water quality, high sludge concentrations, and limited O&M (Operation and Maintenance) capabilities.

Operation & Maintenance Guidelines:
1.Parameter Optimization: Strictly regulate the aeration rate and suction pressure (typically between -0.02 and -0.04 MPa). Avoid excessive suction pressure (Transmembrane Pressure / TMP), which can rapidly accelerate membrane fouling.
2.Scheduled Cleaning Protocols: Perform regular online chemical cleaning, globally known as Clean-in-Place (CIP). In cases of severe fouling, conduct offline chemical soaking (recovery cleaning) to restore membrane performance.
3.Pre-treatment & Protection: Strictly prevent oils, greases (FOG), and sharp particulates from entering the membrane tank. This is critical to prevent physical damage to the membrane surface and avoid irreversible fouling.

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FAQ

Q1: What are the advantages of submerged MBR membrane modules?

Submerged (immersed) MBR modules install directly inside the bioreactor tank, minimizing footprint while offering high shock-load tolerance. Continuous coarse-bubble aeration scouring prevents sludge buildup on membrane fibers, ensuring stable permeate filtration across diverse municipal and industrial wastewater applications.

Q2: What causes declining membrane flux and reduced permeate flow?

Flux drop is typically caused by membrane surface fouling from accumulated sludge cakes, colloids, extracellular polymeric substances (EPS), or inadequate air scouring. Quick fix: Maintain sufficient aeration air scouring flow rates and run scheduled inline chemical maintenance cleaning (CIP/CEB) to restore operational flux.

Q3: How to fix turbid permeate or fine particulates leaking into effluent?

Turbid effluent indicates a breach in membrane integrity caused by broken hollow fibers, deteriorated potting epoxy, or loose suction header seals. Quick fix: Conduct air-pressure integrity or bubble point testing to locate breached elements, pin/isolate broken fibers, re-seal potting joints, or replace damaged membrane cassettes.

MBR Membrane Modules (for MBR)

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