The membrane ultrafiltration process provides effective filtration, preventing biomass and colloidal particles from entering the effluent, while allowing operation at high sludge concentrations with precise control of sludge age. Unlike traditional systems that rely on sedimentation, membrane separation ensures consistent performance regardless of sludge settling characteristics. Consequently, the membrane bioreactor can maintain sludge concentrations of 8–10 g/L without compromising filtration capacity, enabling more efficient and flexible wastewater treatment.
Advantages
By using the application of membranes to biological plants, we exploit all the advantages of the biological process. The process itself has significant advantages, which you can find listed here:
Reduced sensitivity to changes in the feed: the efficiency of ultrafiltration membranes is not dependent on the settling of the biological flocs; the sludge is retained even if the bioreactor undergoes the entry of a toxic substance or a sudden increase in organic or hydraulic load or even a pH shock.
Another benefit of using ultrafiltration membranes is the possibility of maintaining biomass concentrations in circulation that are significantly higher than those characteristic of traditional technologies.
Improved effluent quality: the ultrafiltration membranes guarantee absolute separation of suspended solids, preventing the entrainment of biological sludge responsible for high COD and suspended solids values in the effluent and thus allowing subsequent treatment stages normally sensitive to suspended solids (such as reverse osmosis or, as in the present case, tertiary ozonation).
Ease of management: the high technological level expressed by the system makes it easy to manage.
Accurate control of the average age of the biological sludge: since virtually no solids pass through the membranes and since the sludge purge is strictly regulated, the age of the sludge can be precisely controlled, thus guaranteeing the management parameters chosen by the operators.
Reduced sludge production: as a consequence of being able to maintain a significantly higher sludge age than traditional plants, sludge production is reduced (resulting in lower dewatering and sludge disposal costs).
Extremely reduced overall dimensions: the possibility of developing the bioreactor in height (MBR) and the absence of the final clarification basin allow for a high space saving compared to other traditional solutions (with the same abated polluting load).
Here below some of works
Contact us to know complete reference list
15306
MBR
The intervention involved the construction of an ultrafiltration section, with hollow fiber membranes, for the optimization and implementation of the performance of the existing biological activated sludge purification system, in addition to the replacement of the sedimentation unit of the first biological oxidation stage.
Waste sector
89415
MBR
The wastewater treated in a plant section with chemical-physical technology is continuously fed to the biological treatment section where oxidation of the organic substrate dissolved in the water occurs through the use of biomass and ambient air. The air is guaranteed by a blower in control of dissolved oxygen and pH. The separation of sludge from water is guaranteed by a hollow fiber membrane system.
Chemical sector
Contacts
Registered office: Via Enrico Fermi 32 – 24020 Scanzorosciate (BG)
Operational headquarters, warehouse and workshop: Via A. Moro 1 – 24020 Scanzorosciate (BG)
Cap. Soc. € 600.000,00 i.v.
R.I. BG, Cod. Fisc. e P.I. 02887960165
Cod. Univoco SUBM70N
REA 331280
info@fidiaeng.it
(+39) 035 659 4550