The longterm reliability of this process is evident in the thousands of units. Rotating biological contactor systems have been hit by a number of construction and operating problems, including. The advantages of using rotating biological contactors rbc in wastewater treatment plants outweigh the disadvantages of installing and operating the system. The main advantage of this technology is its simple operating principle, low energy demand and mechanical durability. Envirodisc rotating biological contactors rbc provide highly efficient fixed film bod and ammonia removal with low energy usage and maintenance requirements. Rotating biological contactor rbc is an attachedgrowth biological process, which consists of a series of rotating plastic media all coated with a layer of biofilm. Design criteria for a rotating biological contactor system for. S abstract the rotating biological contactor is an attached growth biological treatment used in removal of biodegradable matter present in wastewater is popular due to its simplicity low energy requirement, low land requirement, stable in various. Brazil usdaagricultural research service, national center for cool and cold water aquaculture, kearneysville, wv 25430, usa abstract this paper describes the performance characteristics of an industrialscale airdriven rotating biological contactor rbc. Rbcs may be the best process choice for some wastewater treatment plants because of their proven simplicity, reliable performance, and low energy usage particularly important when considering leed qualification.
Chapter 14 introduces the working principles of rotating biological contactors. Use of a rotating biological contactor for removal of. Operation of rotating biological contactor study on. Rotating biological contactors rbcs for wastewater treatment began in the 1970s. This study evaluates the application of rbc technology for the removal of ammonia. Rotating biological contactor rbc lafayette college. The unpredicted loss of mechanical integrity results. Abco water systems has recently installed yet another rbc wastewater treatment plant at wintamarra, adding to our systems in broome, karratha and port hedland. The biofilm or slime on the media aerobically react with substances in a waste stream for biooxidation and nitrification, or anaerobically react with the substances for denitri. Treatment of municipal wastewater by using rotating. Where a nitrified effluent is required, rbc can be used to provide combined. A selfaspirating unidirectional aeration system that uses a submersible working pump as an injection nozzle. In the biozone, slowly rotating contactor discs treat the effluent by means of biological oxidation, the treated liquid then flows into the final settlement zone. The shaft continually rotates at 2 to 8 rpm, and a layer of biological growth 2 to 4 mm thick is soon.
Proceedings of the 1st national symposiumworkshop on rotating biological contactor technology, vol. Unique patented media and rotating mechanism that ensure the durability of the shaft and the autocleaning of the media. Where a nitrified effluent is required, rbc can be. It has been widely used for the secondary treatment of domestic and industrial wastewater. Treatment system with rbc can be designed to provide to provide secondary or advanced level of treatment. The primary treatment process means protection by removal of grit and sand and coarse material through a screening process, followed by a removal process of sediment by settling. Rao 2 abstract the rotating biological contactor process offers the specific advantages of a biofilm system in treatment of wastewater for removal of soluble organic substances and nitrogen compounds. The rbc is designed for biological treatment of waste water for municipal and industrial applications. Rotating biological contactor energy expenses are controlled and well below that of alternate solutions.
Removal of organic matter has been targeted within organic loading rates of up to 120 g m. Rotating biological contactor rotating biological contactors use a series of slowrevolving discs which are hosts to a biological film that removes pollutants from wastewater. As the discs rotate, waste water is retained on the bacterial layer and subjected to oxidative conditions via air contact, breaking down both organic and inorganic materials, depending on the bacterial species present on. The rotating biological contactor process offers the specific advantages of a biofilm system in treatment of wastewater for removal of soluble organic substances.
The discs sit within a trough, with approximately 40% of their diameter covered by the liquid. Rotating biological contactors are an efficient fixedfilm wastewater technology for secondary andor advanced biological treatment. The rotating biological contactor rbc process is an efficient fixed film wastewater treatment technology. Rotating biological contactors to provide secondary. Full nitrification is achievable under appropriate process conditions with oxidation rates of up to 6 g m. Process design, parts, upgrades and complete replacement services. Rotating biological contactors bim object definition. The shaft is slowly rotated over a tank into which settled. However, the primary manufacturer of rbcs in the united states manufactured.
Constant quality treatment providing phosphorus removal and disinfection options for sensitive environments. Operation of rotating biological contactor study on sewage treatment plant. It provides aerobic treatment of a fixedfilm of biomass. School of engineering, cranfield university, cranfield, u. In operation, biomass grows on the surface of the disks and eventually covers the entire wetted surface. Proceedings of the 94 annual meeting and exhibition of the air and waste manage. Performance of rotating biological contactor in wastewater. The rotating biological contactor is a secondary treatment system.
The rotating biological contactor rbc is a fixed film biological secondary treatment device. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This unique system has no chemical input, is odourless and extremely energy efficient. A rotating biological contactor rbc is a successful wastewater microbial treatment system that has been developed. Biological wastewater treatment systems video from headworks bio duration. Rotating biological contactor rbc retrofit solutions. A new spin on filtration, the modular rotating biological contactor rbc is flexible enough to adapt to the size of an installation, yet at the same time, more energy efficientall this while providing more contact time between the bacteria and water, producing cleaner more oxygenated water. Miller a fullscale rotating biological contactor rbc sys tem, designed to achieve effluent limitations of 10 mg1 5day biochemical oxygen demand bod5 and 2 mg1 of ammonia nitrogen nh3n for domestic wastewater, performed at less than design expectations. The disadvantages of rotating biological contactors.
Effluent bod characteristics for secondary treatment are comparable to well operated asp. One typical example of a rotating biofilm design is the rotating biological contactor rbc, which has been widely used in wastewater treatment gullicks et al. Performance and operation of a rotating biological contactor. In parallel, community and commercial development in ecological sensitive areas requires a solution that is adapted to modern lifestyles. Rotating biological contactors rbcs have been used as an efficient fixed film method of treating wastewater due to its advantages such as low energy and land requirements or simplicity of operation. This production provides an overview of the fixed film. Rotating biological contractors flashcards quizlet. United states environmental protection agency research and development water engineering research laboratory cincinnati oh 45268 epa600s286018 apr. Rotating biological contactor packaged sewage treatment plant uk. Hence there is a board scope for cheaper and compact unit processes or ideal solutions for such issues. Rotating biological contactors to provide secondary treatment. An rbc contains a number of discs which are arranged along the shaft axis of the contractor.
In the rbc process, wastewater flows through shallow tanks containing the partially submerged, rotating shafts where biomass is carried on the media for reduction of pollutants. This paper describes a design of an industrialscale rotating biological contactor rbc and its performance installed in recirculating aquaculture system culturing tilapia at elnenaeia fish farm. Rotating biological contactor sewage treatment reverse. Use of rotating biological contactors for nitrification at the city of guelph water pollution control plant, guelph, ontario, canada. The rotating biological contactor rbc technology has been in use for several years for the treatment of municipal and industrial wastewater. All things water course i, activated sludge youtube. Nov 24, 2017 rotating biological contactor wikipedia audio article duration. Rotating biological contactor contain a number of rotating discs on a shaft submerged in a tank partially or completely filled with liquid, figure 9.
Overview wastewater treatment processes in use today may be broadly categorized as either fixed film processes or suspended growth processes. Created using powtoon free sign up at create animated videos and animated presentations for free. Rotating biological contactor rbc the rotating biological contactor is a secondary treatment system. The rbc process involves allowing the wastewater to come in contact with a. Performance and operation of a rotating biological. The rotating biological contactor has gained great trust for its superior durability and wastewater purification function, and has made us a leading manufacturer. Rotating biological contactors are an efficient fixedfilm wastewater technology well suited for secondary andor advanced biological treatment.
Rotating biological contactor rotofix premier tech aqua. Rotating biological contactors for wastewater treatment. In operation, a media, consisting of a series of circular disks mounted side by side on a common shaft is rotated through the wastewater flow. Design information on rotating biological contactors. Rotating an rbc rotor slowly increases contact time with the waste to be treated and improves treatment. Rotating biological contactor rbc a suspendedfixed growth biological treatment processes used to consume organic matter bod from wastewater. Rotating biological contactor wikipedia audio article duration. Rotating biological contactors bim object definition from nbs. Rotating biological contactor rotofix conventional wastewater treatment systems are ageing throughout communities and municipalities and will need to be replaced sooner or later. Products introduction the rotating biological contactor has gained great trust for its superior durability and wastewater purification function, and has made us a leading manufacturer. This is indicative of the lod requirements for rotating biological contactors. Operational monitoring of a rotating biological contactor system, costley s c, wallis f m.
Biofilm grows in immobilized form on the surface of a large number of closely spaced discs or inside corrugated packing units that slowly rotate in. It is wellsuited for secondary andor advanced treatment in municipal or industrial applications. Conventional wastewater treatment systems are ageing throughout communities and municipalities and will need to be replaced sooner or later. Rotating biological contactor rbc retrofit solutions datasheet with over 40 years of experience and more than 10,000 rbc units still in operation today, evoqua is. We have supplied robec units to all major uk water authorities, working alongside them to further develop the design to its current form. Rotating biological contactors for wastewater treatment a. Consists of 24 m diameter disks, closely spaced on a rotating horizontal axis disks are covered with a biofilm. Biofilm grows in immobilized form on the surface of a large number of closely spaced discs or inside corrugated packing units that slowly rotate in a trough, partially immersed. Preventative maintenance and proper biomass loading are the two key factors to longevity of rotating biological contactor systems. The rotating biological contactor consists of a series of plastic discs mounted on a shaft. Rbcs may be the best process choice for some wastewater treatment plants because of their proven simplicity, reliable performance, and low energy usage particularly important when considering. With the data available, the system can be operated at 2 rpm with an influent flow rate of 1 lmin. Abstract the management of the medium and small scale industries feel burden to treat waste if the cost involvement is high. Rotating biological contactor biofilm method wastewater.
In the final settlement zone any humus sludge or scum that forms as part of the natural biological process is removed by means of an automated recirculation pump system and returned. Various design criteria have been set for rotating biological contactor rbc for treating urinal wastewater. Operational problems with rotating biological contactors. We offer many services including scheduled maintenance contracts to help ensure that your rotating biological contactor system stays up and running. Rotating biological contactor are described by characteristics such as motor, existing flows and influent properties. Rotating biological contactor systems have been hit by a number of construction and operating problems, including the failure of the equipment used to treat wastewater, the environmental.
Review on process, application and performance of rotating. Trickling filter process advantages in comparison to activated sludge duration. Operation of rotating biological contactor study on sewage. During the 1970s and early 1980s, the rotating biological contactor process rbc, a particularly efficient fixed film process, became popular. Advance your industry knowledge and expertise with all things water video courses featuring water treatment processes, water sector innovations, environmental challenges. Review paper on study of rotating biological contactor for. Grey wastewater was used to study the performance of the modified rotating biological contactor.
It is a unique adaptation of the movingmedium biofilm system which facilitates easy and effective oxygen transfer. The process consists of corrugated plastic media arranged around a horizontal shaft, placed in a tank. This study evaluates the application of rbc technology for the removal of ammonia from mining industry effluents. In the past 30 years of company development, we have improved our techniques and have continued to upgrade our products.1018 1338 43 141 206 1501 602 1558 1372 986 51 26 393 917 816 823 852 1469 1063 1316 1432 1651 1489 986 529 983 821 960 173 79 1188 34 381 569 795 444 659 913 151 496 1303 316 749 289 266 583 721