Membrane Technology with Activated Sludge Process

mbr system

Combining activated sludge treatment with latest Membrane technology not only saves a lot of space but also achieves a clarification process free of bacteria and particles even under variable elements.

In contrast to many other submerged filter systems, our AQQA membrane is a “true” ultra-filtration membrane. It therefore offers a significantly higher retention rate than a micro-filtration membrane does. Bacteria, and even viruses, can be securely retained (up to 99.9999 %).

Additional tertiary treatment is not necessary with our Membrane filters as we exceed European Regulations for Bathing Water Quality “2006/7/EG” without any further treatment.

Operating Principle

The offered throughput system with cascade technique is designed in accordance with the activated sludge (extended aeration) principle with MBR-technology.

The raw sewage water flows in a lifting station from where it is pumped to the automatic fine screen with 1mm slot. The screened materials are removed and automatically transported in a solid waste container without the plant operator making direct contact with the waste.

From the aeration tanks, the activated sludge mixture is extracted over the AQQA filter membranes (plate membrane system) (<0.1 microns) with a permeate pump.

Excess sludge produced during the treatment process is removed from the MBR tanks by a submersible pump to an excess sludge holding tank for evacuation. With a sludge press or drying system, the sludge can be dried.

Due to the MBR process, these sewage treatment systems are designed with a much lower volume for the activation tanks, without limitation for buffering and with a higher efficiency of purification.

Additionally, due to the ultra-filtration an additional cleaning stage (chlorine, UV, activated carbon) is not required to meet effluent standards.

Package Options Containerized Solutions

Our designs are calculated and designed according to the ATV and conform to the standards and regulations from the European Union regarding wastewater treatment.

All mechanical equipment parts including the electrical measuring and control devices are installed in a CSC approved ISO Norm-container. The internal walls of the ISO Norm-container are lined with High Density Polyethylene lining to ensure the raw wastewater in the tank does not come in direct contact with the steel container wall. Consequently, this prevents corrosion and extends the life of the container significantly.

The containers come in 20ft, 40ft or 40ft High-Cube ISO Norm Containers with hydraulic load capacities of up to 20 – 160m3/d (200PE – 450PE), 45 – 350m3/d (450PE – 100PE) and 55 – 440m3/d (550PE – 1250PE), respectively.

With the option of modularity, we can extend these capacities by assembling several container options together depending on the end-user’s needs.


Alternatively, we can install the mechanical and electrical equipment in high density polyethylene (HDPE) tanks for locations where an ISO Norm Container cannot fit into.

The treatment process remains as described with only the holding tanks being different. The advantage of modularity also remains in this setup, allowing us reach almost similar capacities.


Concrete Tank Installations

Based on our layout design, we can advise the end-user’s construction team for the dimensions required for installation of the MBR system in a reinforced concrete tank.

Daily Hydraulic load capacity of 20m3 to 20,000m3 can be treated

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