The rotating biological contactor used to remove organic waste is an appropriate technology because there exist a universal need for. The total suspended solids were reduced from 73 mg2, to 32 mgl and ammonia was completely oxidized to nitrate. Biological treatment attachedgrowth processes study guide. Explain the principals of operation of a trickling filter plant. Use of the rotating biological contactor by rex taicheong. A rotating biological contactor or rbc is a biological treatment process used in the treatment of wastewater following primary treatment. United states environmental protection agency research and development water engineering research laboratory cincinnati oh 45268 epa600s286018 apr. 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. Br novatek rotating biological contactor rbc technical design. Biodegradability of oily wastewater using rotating biological. It is a unique adaptation of the movingmedium biofilm system which facilitates easy and effective oxygen transfer. Rotating biological contractor is one type of treatment system. The rotating biological contactor consists of a series of plastic discs mounted on a shaft. Schematic of a rotating biological contactor rbc system and in fact all files in the autocad files are current and uptodate.
Consists of 24 m diameter disks, closely spaced on a rotating horizontal axis disks are covered with a biofilm. Describe how to identify problems in a rotating biological contactor rbc by observation of the media. The report documents investigation of the applicability of aerobic rotating biological contactor rbc technology for secondary treatment of the wastestream of a facility manufacturing the explosives rdx and hmx. However we do our best to ensure that this file fig 9. The rotating biological contactor process offers the specific advantages of a biofilm system in treatment of wastewater for removal of soluble organic substances. Since the rotating biological contactor process is less susceptible to upset from toxic and hydraulic shock, its applications extend beyond the treatment of typical domestic and industrial wastes. With the data available, the system can be operated at 2. The disadvantages of rotating biological contactors. Kee process managed flow rotating biological contactor rbc model dn19s. The biological growth that becomes attached to the disks assimilates the organic materials in the wastewater. Hochheimer fred wheaton, professor national committee for quality assurance biological resources engineering dept.
Effluent bod characteristics for secondary treatment are comparable to well operated asp. The rotating biological contactor process rbc has been used increasingly in europe for the treatment of domestic wastewaters and for some industrial wastes. Loose biological skin is separated in a following sedimentation basin and then transfered to the sludge treatment. Excess biomass is sheared off in the tank, where the rotating action of the disks maintain the solids in suspension. 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. Treatment system with rbc can be designed to provide to provide secondary or advanced level of treatment. Treatment of municipal wastewater by using rotating. Rotating biological contactors odor development of white biomass on rotating biological contactor rbc media excessive sloughing of growth excessive breakage of rotating disks or shafts in rbc units shaft, bearing, drive gear, or motor failure solids. 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. The longterm reliability of this process is evident in the thousands of units in operation for more than 40 years with evoqua as the original equipment manufacturer oem. Emphasis was placed on characterizing the anammox organism in this enrichment and on comparing its physiological characteristics to those of candidatusb. Rotating biological contactors are an efficient fixedfilm wastewater technology well suited for secondary andor advanced biological treatment. It has been widely used for the secondary treatment of domestic and industrial wastewater. It consists of a series of closely spaced, parallel discs mounted on a rotating shaft which is supported just above the.
The shaft is slowly rotated over a tank into which settled. Performance of rotating biological contactor in wastewater. The performance of a rotating biological contactor rbc was studied at a loading rate of 0. The biological treatment attached growth processes study guide was the result of a collaborative effort of yearlong monthly meetings of wastewater operators, trainers, consultants, the wisconsin wastewater operator association wwoa, and the wisconsin department of. Rotating biological contactor rotating biological contactors use a series of slowrevolving discs which are hosts to a biological film that removes pollutants from wastewater.
Please be aware that this document might not be produced by therefore we can not guarantee the accuracy of the information. Manual of practice mop 8 water environment federation process design manual. Aeration is provided by the rotating action, which exposes the disks to the air after contacting them with the wastewater. It provides aerobic treatment of a fixedfilm of biomass. The first lesson provides information on the concepts and components of rbc. Use of the rotating biological contactor for appropriate technology. The first lesson provides information on the concepts and components of rbc treatment systems. Conventional wastewater treatment systems are ageing throughout communities and municipalities and will need to be replaced sooner or later. Abstract the management of the medium and small scale industries feel burden to treat waste if the cost involvement is high. Full nitrification is achievable under appropriate process conditions with oxidation rates of up to 6 g m. Rotating biological contactors for wastewater treatment. During the 1970s and early 1980s, the rotating biological contactor process rbc, a particularly efficient fixed film process, became popular. Hmbr is a combination of rotating biological contactor plus kaldnes media and an external membrane.
Rotating biological contactors rbcs for wastewater treatment began in the 1970s. Operation of rotating biological contactor study on. How does the rotating biological contactor system work. The rotating biological contactor rbc is a fixed film biological secondary treatment device. Enrichment and characterization of an anammox bacterium. Performance and operation of a rotating biological. Hence there is a board scope for cheaper and compact unit processes or ideal solutions for such issues. A rotating biological contactor rbc is a successful wastewater microbial treatment system that has been developed. Use of rotating biological contactors for nitrification at the city of guelph water pollution control plant, guelph, ontario, canada. In parallel, community and commercial development in ecological sensitive areas requires a solution that is adapted to modern lifestyles.
The rotating biological contactor is a secondary treatment system. Preventative maintenance and proper biomass loading are the two key factors to longevity of rotating biological contactor systems. Media yang dipakai berupa piring disk tipis berbentuk bulat yang dipasang berjajarjajar dalam suatu poros yang terbuat dari baja. Rotating biological contactor rbc total water solutions. If the biological process is followed by chemical precipitation, no inter mediate sedimentation is needed as return sludge pumping is not required. Rbcs can be used for air stripping and biological degradation of materials found in. Tertiary treatment of wastewater using a rotating biological. Material and methods biomass and mineral medium the culture was enriched from biofilm material from a nitrifying. We offer many services including scheduled maintenance contracts to help ensure that your rotating biological contactor system stays up and running. It is wellsuited for secondary andor advanced treatment in municipal or industrial applications. Describe the operational troubleshooting methods of rotating biological contactors rbcs. Rotating biological contactor sewage treatment reverse. Guidelines for the design, construction, operation, and. Upon completion of this lesson you should be able to do the following.
An rbc contains a number of discs which are arranged along the shaft axis of the contractor. Pdf performance study on rotating biological contactor. Proceedings of the 1st national symposiumworkshop on rotating biological contactor technology, vol. 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 rotating biological contactor rbc process is an efficient fixed film wastewater treatment technology.
This technology was designed and specified to provide for the current and future expansion of the community. The shaft continually rotates at 2 to 8 rpm, and a layer of biological growth 2 to 4 mm thick is soon. Kee process final settlement tank model st9 with automatic pump assisted sludge return system and gravity sand filter with backwash capability. Grey wastewater was used to study the performance of the modified rotating biological contactor. Where a nitrified effluent is required, rbc can be. Removal of organic matter has been targeted within organic loading rates of up to 120 g m. This paper presents the information found in our investigation in a faq format. The bod5 of domestic wastewater was reduced from 150 mgr to 3 mgn, a reduction of 98%. The process consists of corrugated plastic media arranged around a horizontal shaft, placed in a tank. Pdf rotating biological contactors rbcs have been used as an efficient fixed film method of treating wastewater due to its advantages such. Operational problems with rotating biological contactors. Biological wastewater treatment systems video from headworks bio duration. Manual recommends that an optimal system should contain at least three.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Grove gear gear drives are found in crane, material handling, pulp and paper, and a host of additional industries where quality and dependability are paramount. Rotating biological contactors to provide secondary. Rotating biological contactor systems have been hit by a number of construction and operating problems, including the failure of the equipment used to treat. The longterm reliability of this process is evident in the thousands of units in operation for more than 40 years with evoqua as the original equipment manufactuer oem. Rotating biological contactors consist of a series of closely spaced circular disks of polyvinyl chloride pvc that are submerged in wastewater and rotated through it. During the 1960s, rotating biological contactors rbcs gained popularity as a.
However, the primary manufacturer of rbcs in the united states manufactured. 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 twolesson unit on rotating biological contactors rbcs is designed to be used with students who have had some experience in wastewater treatment and a basic understanding of biological treatment. The advantages of using rotating biological contactors rbc in wastewater treatment plants outweigh the disadvantages of installing and operating the system.
Rotating biological contactor rbc a suspendedfixed growth biological treatment processes used to consume organic matter bod from wastewater. Reaktor kontak biologis putar atau rotating biological contactor disingkat rbc merupakan adaptasi dari proses pengolahan air limbah dengan biakan melekat attached grouwth. A rotating biological contactor is a type of secondary treatment process. The rbc process involves allowing the wastewater to come in contact with a. We have supplied robec units to all major uk water authorities, working alongside them to further develop the design to its current form. Proceedings of the 94 annual meeting and exhibition of the air and waste manage. However, compared to biological removal of phosphorus, chemical processes have higher operating costs, produce more sludge, and result in added chemicals in sludge metcalf and eddy, 2003. Design information on rotating biological contactors. The discs sit within a trough, with approximately 40% of their diameter covered by the liquid. Wefasce 1992 design of municipal wastewater treatment plants.
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