HUBER BioMem® SMBR for container
HUBER BioMem® SMBR for building

The demand for centralised sewage treatment plants has become nearly saturated in industrialised countries. A huge development potential still exists, however, in many other parts in the world, such as Africa, Asia, Russia, Middle East, South America, and even South and East Europe. Due to population growth especially in the conurbations of these regions adapted and sustainable local water management solutions are urgently required. “Water is life“ in this context means the supply of drinking water as well as sanitation and irrigation solutions in these by nature arid regions.

Economic growth in conurbations depends on a functioning water management on all levels.  Also the development of tourist centres in new holiday regions depends on individual, low-cost and (flexible) decentralised solutions for wastewater and irrigation systems. This refers also to small remote towns, villages, factories and production facilities in rural areas. Decentralised water management solutions furthermore result in cost savings, plant safety and independence of public systems. Individual local solutions are the solutions of the future.

Under these aspects, the HUBER BioMem® SMBR system has been developed for decentralised applications worldwide:

  • hotels with seasonal load peaks
  • suburban settlements in arid regions
  • remote villages with high wastewater quality requirements
  • small factories and production facilities
  • permeate reuse for irrigation

Particular attention has been paid to operational safety by using a two-line wastewater treatment plant with a limited number of components.

Plant set-up

The HUBER BioMem® SMBR system is a modular system consisting of individual filtration units that are combined as required due to specific wastewater and combined water volumes. Standardised sizes make the system available for plant sizes of 200 – 2500 PE (25 – 600m³/d). The HUBER BioMem® SMBR system is available as a conventional concrete design or as a mobile containerised unit wired ready for connection. On the basis of the concept “a complete sewage treatment plant from one source“ associated components are available as optional modules, such as machines for mechanical pretreatment, phosphate precipitation, excess sludge disposal, or even equipment for remote control and data protection. Interfaces are clearly defined and the customer has one single contact for advice and support. The HUBER BioMem® system consists of mechanical pretreatment, buffer tank for flow equalisation and MBR plant. The MBR plant consists of an aeration tank with a two-line filtration plant. The two-line design increases operating reliability. And if the two-line design is realised in two chambers, the plant can be adjusted to varying wastewater flows, such as seasonal fluctuations. One of the chambers can be connected or disconnected as needed without affecting operating safety.

The principle of the Huber BioMem® SMBR is based on the combination of a conventional MBR process and sequential feeding. The so-called SMBR process simplifies biological wastewater treatment and filtration within one tank. This unique technique is possible as the scouring air within the SMBR reactor is used both for “mechanical” purposes (membrane cleaning), mixing within the reactor through loop flow generation and biological functions (oxygen supply for wastewater clarification through microorganisms). Air tubes are provided below the filtration unit that reduce the air intake by up to 60 % compared to conventional MBR plants.

The wastewater is biologically treated within the aeration tank and periodically drawn off through the membrane modules by applying an underpressure. Filtration with ultrafiltration membranes that have a pore size of 40 nm (1,500 times smaller than the diameter of a human hair) retains virtually all germs and bacteria. The discharged permeate can be reused as service water or for irrigation. Due to the low mean loading with average filtration performances, frequent chemical regeneration as typical for flat membranes is reduced to intervals of approx. 4 to 8 months. The generated excess sludge is drawn off periodically and stored in a tank. As an option, the sludge can be thickened mechanically.

The concept of the HUBER BioMem® sewage treatment plant offers the customer a quick to implement, individually adapted and cost-effective solution that meets his specific requirements. HUBER standards guarantee high quality of engineering and products: engineering, optimisation and service from one source – from specialists with a global know-how.