What are the advantages and disadvantages of SAF Film?
SAFF is an element of a sewage treatment plant's technology. It is an aerobic biological technique that employs corrugated inert UV stabilized PVC material. The Submerged Aerated Fixed Film Technology's increased surface area aids in the quick digestion of biomass by microorganisms. The air is provided using a mechanical aeration system that includes a blower and diffusers in this technique. The SAFF media is supported by a bottom support, which is installed in the fixed reactor with the SAFF media.
In the wastewater sector, Netsol’s range of submerged aerated fixed film (SAFF) technology is the most cost-effective and simple method. It is mostly employed in commercial and residential buildings, as well as in the sewage sanitation industry. This method is most commonly employed when land is scarce and operational staffing is uneconomical. The procedure aids in the reduction of organic load, biochemical oxygen demand (BOD), and Suspended Solids (SS) in domestic and commercial sewage effluent. This method is most commonly used in small to medium-sized treatment facilities.
Working of SAFF Technology
It is utilized in the secondary treatment of wastewater treatment plants and is based on aerobic attached growth.
In this method, raw sewage is injected into the SAFF Reactor, which includes polymer-based bio-media and is used for the attached growth process. The SAFF maintains an aerobic atmosphere by the use of fine bubble dispersed aeration equipment, which also helps to keep the mixed liquor in a thoroughly mixed state. The combination of fresh and old cells overflows into a secondary sedimentation tank, which separates the cells from the treated wastewater.
To maintain the desired concentration of organisms in the SAFF reactor, a portion of the settling cells is recycled using horizontal, non-clog, and flooded pumps, while the remainder is sent to the aerobic sludge digester-cum-thickener tank for further sludge treatment.
Advantages of SAFF Technology
1: Deep reactors have a tiny footprint and require less room.
2: In contrast to a standard aeration system, no sludge recirculation is necessary to maintain MLSS.
3: It may be made to any size to handle higher flows and loads.
4: Installation is simple because to the modular architecture.
5: When compared to surface aerators, fine bubble dispersed aeration often requires less energy.
6: Sludge output is low and stable, obviating the requirement for sludge digestion.
7: The aeration tank size can be reduced by increasing the BOD loading on the medium. When compared to the activated sludge process, SAFF requires 25-40% less tank volume.
8: The SAFF technique is capable of reducing BOD by 95-98 percent.
9: Minimal sludge formation, little odour, and low aesthetic effect.
10: The maintenance needs are straightforward.
Disadvantagesof SAFF Technology
1: External energy input is heavily reliant.
2: Due to the lack of primary sedimentation, the reactor clogs.
3: Extensive dependency on external energy sources.
4: Requires highly trained personnel.
Applicabilityof SAFF Technology
The SAFF tec?hnology-based solution is particularly useful in the following situations:
1: In crowded areas, small to medium flows are preferred.
2: Locations that are sensitive.
3: Applicable as a strategy that is decentralized.
4: Re-enacting existing trickling filters that are overburdened.
Best manufacturers of Submerged Aerobic Fixed Film Reactors: Netsol Water Solutions provides it all!
We collaborate with a wide range of international organizations to tackle complicated problems of Sewage Treatment Plants by strategically integrating modern treatment technology with practical solutions.