Ifas stands for integrated fixed film activated sludge and describes the combination of fill. Aug 09, 2017 integrated fixed film activated sludge ifas video sstp water technologies. An ifas system involves the combination of a suspended biomass activated sludge and an attached biomass biofilm in the same reactor set as. In this regard, the life cycle assessment lca of a package type integrated fixedfilm activated sludge ifas reactor, treating municipal wastewater, was carried out using simapro software 8. Integrated fixedfilm activated sludge entex technologies. Dec 10, 2012 brentwood offers the complete accufas integrated fixed film activated sludge ifas system and provides process design assistance and engineering support to ensure optimum performance. Apr 28, 2016 whats integrated fixedfilm activated sludge ifas. The eliquo hydrok ifas integrated fixedfilm activated sludge system has been developed utilising the biotextil cleartec media for which eliquo hydrok are the appointed sole uk distributor. Activated sludge has process flexibility and provides a high degree of treatment. Integrated fixedfilm activated sludge ifas processa. The agar ifas integrated fixedfilm activated sludge process combines conventional activated sludge technology and biofilm systems into a single reactor.
The hybrid process enhances volumetric productivity without increasing mixed liquor suspended solids mlss concentrations. Several secondary treatment technologies were investigated including upgrading trickling filters, the trickling filterssolids contact process, and a new innovative technology of trickling filters followed by integrated fixedfilm activated sludge ifas. The integrated fixed film activated sludge ifas process is typically installed as a retrofit solution for conventional activated sludge systems that are at or beyond capacity. Ifas systems are an easy and effective way to upgrade an existing activated sludge process by increasing the sludge amount mlss in the aeration basin by up to 50%. Integrated fixedfilm activated sludge ifas video from. In an ifas reactor, in addition to the suspended biomass, suspended media is added to promote biofilm growth. The sustainability of new and emerging wastewater treatment technologiessystems is a matter of vital significance. On this media additional biomass will grow and increase the operative sludge age. Environmental performance of an integrated fixedfilm activated. Integrated fixedfilm activated sludge ifas is a relatively new wastewater treatment technology that offers several advantages over conventional activated sludge technologies. These systems are capable of full bod and ammonia removal, and can also be easily configured for full bnr biological nutrient removal. Ifas system increases mlss, sludge retention time wwd. Integrated fixedfilm activated sludge, a sewage treatment process.
Mbbr integrated fixed film activated sludge headworks. Using integrated fixed film activated sludge ifas to. The integrated fixed film activated sludge ifas process is comprised of a fixed. In general an ifas configuration is similar to an activated sludge plant, with biomass carriers utilized in specific stages of the process. Pdf modeling integrated fixedfilm activated sludge ifas and. Activated sludge process upgrade with ifas duration.
Integrated fixedfilm activated sludge ifas process is a hybrid of both fixed film process and suspended activated sludge system, which has gained popularity and. Integrated fixed film activated sludge ifas technology integrated fixedfilm activated sludge ifas technology provides for additional biomass within a wastewater treatment facility in order to meet more stringent effluent parameters or increased loadings without the direct need for additional tankage. It is achieved by adding media to the aeration tanks of the activated sludge process. The metabolic network reactor mnr technology is biopolus patented 3rd generation integrated fixedfilm activated sludge ifas water treatment technology the underlying principle behind the mnr technology is a wellknown natural phenomenon, where microbial biofilm develops on the roots of aquatic plants. Approximately 20 systems incorporating an integrated fixed film activated sludge ifas process were operational in 2011, 15 of which exist in the united states of america. Pdf oxygen transfer in moving bed biofilm reactor and. Ifas stands for integrated fixed film activated sludge wastewater treatment technology. Investigation of nitrification and nitrogen removal from.
Nov 11, 2005 suspended solids mean cells residence time mcrt and temperature are two key parameters for designing integrated fixed film activated sludge ifas wastewater treatment processes, as an alternative for achieving yearround nitrification. The accufas system consists of media modules combined to build media towers within an aeration basin. This paper explains what it is, why it is a viable option, describes its development, presents. Placing fixed film media into activated sludge basins combines. Integrated fixed film activated sludge, a sewage treatment process. How is integrated fixed film activated sludge wastewater treatment technology abbreviated. Ifas is defined as integrated fixed film activated sludge wastewater treatment technology frequently. Apr 24, 2015 this plant rerating was achieved by full conversion of the existing aeration tanks to a hybrid integrated fixed film activated sludge ifas media system.
Influent wastewater and settled sludge from the secondary clarifier. Pdf a mathematical model for integrated fixedfilm activated sludge ifas and moving bed biofilm reactor mbbr wastewater. This technique, used in highly developed wastewater treatment plants, can be used as an upgrade for existing facilities. Integrated fixed film activated sludge ifas hybrid treatment system that combines fixed film technology with conventional activated sludge immerse a solid support media into an aeration basin with suspended biological growth the immersed media provides surface area for biological growth to attach or park. Aet provides engineering consultation and product solutions for fbbrs. The suspendedgrowth biomass of the activated sludge and the biofilm on the carriers work together to provide higher treatment capacity in a smaller volume than that required for activated sludge alone. The right system can improve the treatment capacity of activated sludge treatment systems operating at or above capacity. Biofilm carriers are generally divided in dispersed media or fixed media. Ifas is a relatively new technology that has limited experience in the united states. Multiscale investigation of a symbiotic microalgalintegrated.
Overcoming hydraulic limitations of the integrated fixed. By allowing the fixed film phase to retain biomass in the basin the ifas process can be operated at low solid retention time srt and still achieve nitrification. The integrated fixedfilm activated sludge ifas process is typically installed as a. It involves adding an attached growth media to an activated sludge tank to facilitate biomass growth and strengthen the treatment process. Integrated fixedfilm activated sludge anitamox processa. Aerobic integrated fixedfilm activated sludge ifas and moving bed biofilm reactors mbbrs use an engineered aeration system consisting of stainlesssteel pipe diffusers, manifold or submerged. It consists of a submerged, fixed bed, polypropylene textile media which promotes attached growth biomass in integrated fixed film activated sludge ifas or fixed bed bioreactors fbbr applications. The integrated fixedfilm activated sludge ifas process is typically installed as a retrofit solution for conventional activated sludge systems that are at or beyond design capacity. Biodek ifas integrated fixed film activated sludge ibp. Biodek ifas integrated fixed film activated sludge 0. Ifas wastewater treatment systems full system design. The integrated fixed film activated sludge ifas process is a costeffective means of upgrading caswwtps by adding freefloating carrier media, which promotes biofilm formation in the wellmixed suspended growth reactors, providing a potential niche for slowgrowing microorganisms. Ifas in addition to increasing treatment capacity, conventional activated sludge facilities can improve and stabilize nitrification by retrofitting existing basins with accufas in an ifas.
The integrated fixedfilm activated sludge ifas process is an advanced biological wastewater treatment process that integrates biofilm carriers within conventional activated sludge to uncouple the sludge retention time for nitrifiers and heterotrophic bacteria. Ifas is a modification of the conventional activated sludge process. Ifas upgrades offer an extremely costeffective retrofit solution to municipal wastewater plant expansion, taking full advantage of existing systems, equipment, process. The integrated fixed film activated sludge ifas process is comprised of a fixed film media free moving or stationary combined with activated sludge. Aquafas tm is an integrated fixed film activated sludge ifas treatment process in which our mbbr biofilm carrier technology is incorporated with conventional suspended growth activated sludge. Fixed film processes are inherently stable and resistant to organic and hydraulic shock loadings. The integrated fixed film activated sludge ifas process is an upgrade option for the conventional activated sludge cas process for pollutant removal in wastewater treatment. The ovivo ifas cleartec system is a highly efficient, low footprint activated sludge solution. Integrated fixedfilm activated sludge ifas systems consist of a submerged, fixedbed media, which promotes attached growth biomass for wastewater treatment. Performance of flocs and biofilms in integrated fixedfilm. Fixed film activated sludge system sewage treatment. This technique, used in highly developed wastewater treatment plants, can be used as an. Ammonium removal by nitrification and denitrification in an. Integrated fixed film activated sludge ifas and submerged fixed film sff are popular wastewater treatment processes for both industrial and municipal treatment applications.
The key to the project was an integrated fixedfilm activated sludge ifas secondary treatment process that enabled an increase in design capacity from 0. International french adjectival system, a grading system used in mountaineering. Stmaerotor biological nutrient removal system overview. Anoxkaldnes mbbr and ifas, biofilm k5 media, lagoonguard.
Environmental sustainability assessment of a fixed media. Adding an integrated fixed film activated sludge system or ifas can enhance the capacity and efficiency of an activated sludge system by taking advantage of existing wastewater treatment technology and boosting it with biological treatment methods. If the system is operated with return sludge it is called ifas integrated fixed film activated sludge. Integrated fixedfilm activated sludge fox engineering. The facility now produces effluent containing monthly averages of 6. The integrated fixed film activated sludge ifas wastewater treatment systems are activated sludge biological nutrient removal processes that have been enhanced by the addition of biofilm support media into the aerobic zone of the system to obtain year round nitrification in activated sludge systems that otherwise could not support it.
The anoxkaldnes ifas integrated fixed film activated sludge process uses the same anoxkaldnes mbbr media, the difference being the carriers are used in an activated sludge environment. Activated sludge process upgrade with ifas karluwe schmitz. The cleartec ifas integrated fixedfilm activated sludge system consists of the best of both activated sludge and attachedgrowth organisms in a single process. In this work, i two laboratory scale biofilm anitamox reactors were operated using different configurations ifas integrated fixedfilm activated sludge and mbbr and ii the distribution of the anammox anaob and ammoniaoxidizing bacteria aob in the suspended sludge and the biofilm was characterized using molecular tools qpcr. An ifas system involves the combination of a suspended biomass activated sludge and an attached biomass biofilm in the same reactor set as fixed media ifas system ringlace ifas system examples of systems that are less used today mbbr ifas system the system that are most. Integrated fixedfilm activated sludge ifas process water online. Ifas is a bioreactor setup by using a different type of biomedia and can be. Integrated fixed film activated sludge ifas process is a relative one the technology which incorporates the use of a growth media either to be fixed or not within the suspended growth reactor.
Ifas in addition to increasing treatment capacity, conventional activated sludge facilities can improve and stabilize nitrification by retrofitting existing basins with accufas in an ifas configuration. An integrated fixed film activated sludge ifas system is one of the most popular modified activated sludge processes which increases the microbial population and accelerates the biodegradation of organic compounds by adding a fixed media to a suspended growth basin kim et al. Linking nitrification characteristic and microbial community. This hybrid process referred to as an integrated fixedfilm activated sludge, or ifas, enables activated sludge systems to achieve dramatic gains in volumetric.
Overcoming hydraulic limitations of the integrated fixedfilm. A direct comparison between parallel activated sludge and integrated fixed film activated sludge ifas processes was performed in this study because both treatments received the same primary effluent, although differences may still remain due to different return flow rates. With mabr in ifas mode you can transform overloaded, inefficient, or even obsolete wastewater treatment plants into high efficiency facilities capable of handling larger loads. Fixed bed tubular reactor ifas wastewater treatment. The stmaerotor biological nutrient removal system uses integrated fixed film and activated sludge ifas technology as part of a process that provides biological nutrient removal for municipal and industrial wastewater treatment. The advantage of simultaneous nitrification and denitrification for biofilm systems such as integrated fixed film activated sludge ifas can be described as 1 accumulation of bacteria enhanced by chemical modification of the membrane surface, and 2 the amount of supplied oxygen controlled by intramembrane pressure. The total cod removal efficiencies in the batch bioreactors with suspended activated sludge flocs ifas flocs, mbraerobicflocs, and mbranoxicflocs, decreased sharply from 0 h to 12 h, but decreased only slightly in the bioreactors with attached biofilm mbbrbiofilm, ifas biofilm during this period. An mbbr system typically requires a smaller footprint than suspendedgrowth systems. Ifas systems add the benefits of fixed film systems into the suspended growth activated sludge process. Evaluation of integrated fixed film activated sludge.
The attached biomass combines with the suspended concentration to achieve much greater total biomass. This study evaluated the roles of suspended flocs and attached biofilms from integrated fixed film activated sludge ifas systems in their overall contribution toward organic compound removal in oil sands processaffected water ospw. Ifas combines the treatment benefits of activated sludge with the inherent stability and ease of operation of attached growth film systems, increasing capacity andor level of treatment. Both utilize media carriers to create a protected surface for a biofilm to attach. Integrated fixed film activated sludge ifas is a relatively new wastewater treatment technology that offers several advantages over conventional activated sludge technologies. Integrated fixed film activated sludge ifas video youtube.
An integrated fixedfilm activated sludge treatment. Modern ultrahigh resolution electrospray ionization fourier transform ion cyclotron resonance mass spectrometry was. Accufas is configured as either an integrated fixed film activated sludge ifas or fixed bed bioreactor fbbr system. Adding an integrated fixed film activated sludge system or ifas can enhance the capacity and efficiency of an activated sludge system by taking advantage of existing wastewater treatment technology and boosting it with. What is an integrated fixedfilm activated sludge ifas system. Feb 19, 2019 integrated fixed film activated sludge ifas systems add fixed or free floating media to an activated sludge basin to encourage the growth of biomass and enhance the treatment process. The integrated fixed film activated sludge ifas process combines the advantages of conventional activated sludge with those of biofilm systems by combining the two technologies in a single reactor see also rotating biological contactor, anammox or trickling filters.
Typically, an ifas configuration will be similar to an activated sludge. The integrated fixedfilm activated sludge ifas process is typically installed as a retrofit solution for conventional activated sludge systems that. Adding attached growth media to a suspended growth biomass reactor provides additional biomass for increased treatment. Fixed film activated sludge aesfas technologypackage provides for additional biomass within a wastewater treatment facility in order to meet more stringent effluent parameters or increased loadings without the direct need for additional tank capacity.
The integrated fixedfilm activated sludge ifas process is typically installed as a retrofit solution for conventional activated sludge systems. Integrated fixed film activated sludge ifas is a relatively new technology that describes any suspended growth system that incorporates an attached growth media within the suspended growth reactor u. A return activated sludge pumping system maintained the suspended biomass concentration in the ifas. Integrated fixedfilm activated sludge design with mabr. Ifas systems are being implemented at an increasing number of wastewater treatment facilities to expand the capacity of the activated sludge system in the same. Integrated fixed film activated sludge ifas is one of the alternatives currently being considered in many facilities for retrofit andor expansion. Concurrent upgrades included improvements to the inlet works, construction of four new primary clarifiers, a sludge dewatering facility and a new septage receiving station. Headworks bios operator training program covers all aspects of regular. Trace organic contaminant removal in six fullscale integrated fixedfilm activated sludge ifas systems treating municipal wastewater. However, many questions remain about the fundamental behaviors and. Sludge ifas process is comfortable for upgrading an existing wastewater treatment plant to. Pdf questions and answers about integrated fixedfilm. Activecell integrated fixed film activated sludge water online.
Trace organic contaminant removal in six fullscale. Singh, rana pratap, singh, nitin kumar, kazmi, absar ahmad source. Integrated fixed film activated sludge ifas is an increasingly popular technology that promises to greatly improve the performance of activated sludge wastewater treatment systems. Integrated fixed film activated sludge ifas systems add fixed or free floating media to an activated sludge basin to encourage the growth of biomass and enhance the treatment process.
Ifas integrated fixed film activated sludge wastewater. Sep, 2010 the integrated fixed film activated sludge ifas process is typically installed as a retrofit solution for conventional activated sludge systems that are at or beyond capacity. Paper open access biological performance of integrated. Activated sludge process upgrade with ifas youtube.
Integrated fixed film activated sludge ifas hybrid treatment system that combines fixed film technology with conventional activated sludge immerse a solid support media into an aeration basin with suspended biological growth the immersed media provides surface area. Computer program development for the design of integrated. Integrated fixed film activated sludge ifas technology. In addition, the ifas technology can be used to convert a bodonly municipal plant to a complete biological nutrient removal bnr plant without any additional reactors or new infrastructure. The process begins with the introduction of polyethylene biomass carriers into the activated sludge. Environmental sustainability assessment of a fixed media based and package type integrated fixed film activated sludge reactor in india. The biowater cfas ifas utilizes the benefit of a traditional activated sludge process combined with a biological fixedfilm system to create a highly efficient wastewater treatment plant in a much smaller footprint. Biodegradation and nutrients removal from greywater by an. Ammonium removal by nitrification and denitrification in. Integrated fixed film activated sludge design is perfect for nonperforming plants looking to reach effluent compliance. The objective was to define the feasibility of using the hifas hybrid integrated fixed film activated sludge reactor for upgrading the existing wastewater treatment plants with conventional processes. Molecular characteristics and differences of effluent. Mbr and conventional as by using simulation software.
The mbr 9 comprised a feed tank, an anoxic tank, an aerobic tank with an immersed ceramic microfiltration membrane 0. The integrated fixed film activated sludge ifas process is an advanced biological wastewater treatment process that integrates biofilm carriers within conventional activated sludge to uncouple the sludge retention time for nitrifiers and heterotrophic bacteria. Multiscale investigation of a symbiotic microalgal. Comparison of biomass from integrated fixedfilm activated.
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