Rotating biological contactor rbc lafayette college. Summary of design information on rotating biological contactors. Operational problems with rotating biological contactors. Abstract the management of the medium and small scale industries feel burden to treat waste if the cost involvement is high. Rotating biological contactors thetermrbcgenerallyde. The rbc process involves allowing the wastewater to come in contact with a biological medium in order. Rotating biological contactormoving bed rbc mb wastewater treatment technology corix water systems cws rotating biological contactormoving bed rbcmb uses a unique highrate attached growth moving bed media, which provides near saturation levels of oxygen in the first stage without supplemental blowers. This technology involves allowing wastewater to come in contact with a biological medium in order to facilitate the removal of contaminants. The 2010 merger of eimco water technologies, enviroquip, aqua engineering and christ water. Rotating biological contactor systems have been hit by a number of construction and operating problems, including the failure of the equipment used to treat. Performance and operation of a rotating biological contactor in a tilapia recirculating aquaculture system brian l. An rbc contains a number of discs which are arranged along the shaft axis of the contractor.
A rotating biological contactor rbc is a successful wastewater microbial treatment system that has been developed. 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. A rotating biological contactor or rbc is a biological treatment process used in the treatment of wastewater following primary treatment. Hmbr is a combination of rotating biological contactor plus kaldnes media and an external membrane. Rbc rotating biological contactor old or defective rbcs, supplied by any manufacturer, may be referred to jacopa for expert advice on refurbishment and repair, and our colleagues have developed a unique procedure for the investigation and repair of any rbc plant. 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 process offers the specific advantages of a biofilm system in treatment of wastewater for removal of soluble organic substances and nitrogen compounds. Jul 06, 2014 trickle filter for aquaponics aquaculture a moving bed bio filter mod duration. Rotating biological contactor rbc retrofit solutions brochure with over 40 years of experience and more than 10,000 rbc units still in operation today, evoqua is your single source for parts, service, and retrofit of rbcs. Hochheimer fred wheaton, professor national committee for quality assurance biological resources engineering dept. Rotating biological contactor rotating biological contactors use a series of slowrevolving discs which are hosts to a biological film that removes pollutants from wastewater. The 280l pilot used in this study figure 1 contained 16 hard polyethylene disks with an effective surface area of 0. Envirodisc rotating biological contactor rbc studies by independent consulting engineers conclude that the proven rbc process uses less than half the energy of a suspended growth process for mwwtp carbon reduction. 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.
Rotating biological contactor rbc equipment is frequently used for domestic and mining effluent treatment. Rotating biological contactor water treatment waste water. Nitrogen oxidation consortia dynamics influence the performance of fullscale rotating biological contactors. 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. A rotating biological contactor rbc is an attached. This inhouse project was undertaken to evaluate and summarize within one document relevant design information pertaining to the rotating biological contactor rbc process.
The primary treatment process removes the grit and other. Rotating biological contactor rbc retrofit solutions. This study conducted to treat the textile industry effluent in effective way using filamentous microbes. Trickle filter for aquaponics aquaculture a moving bed bio filter mod duration. Biological contactors have a rotating shaft surrounded by plastic discs called the media. Rotating biological contactors rbcs for wastewater treatment began in the 1970s. Design information on rotating biological contactors epa nepis. Rotational speed of the discs was 6,8,10 rpm and 42% submergence.
This report documents the design process, the building and testing phase of this reactor. We have supplied robec units to all major uk water authorities, working alongside them to further develop the design to its current form. The most likely cause of massive sloughing of the biological slime growth. This is the talk page for discussing improvements to the rotating biological contactor article. The disk continues to rotate, leaving the waste water and moving through the air. Learn vocabulary, terms, and more with flashcards, games, and other study tools. However, the primary manufacturer of rbcs in the united states manufactured. Gilbert municipal construction division office of water program operations washington, d. Performance and operation of a rotating biological. Rotating biological contactors for wastewater treatment. The minimum required area of biodiscs for the oxidation of organic matter is given by. L o w c o s t r o t a t i n g biological contactor. Preventative maintenance and proper biomass loading are the two key factors to longevity of rotating biological.
Design information on rotating biological contactors. A biological slime grows on the media when conditions are suitable and the. Rotating biological contactormoving bed rbcmb wastewater. The primary function of these bioreactors at wwtps is the reduction organic matter. Epa430984008 summary of design information on rotating biological contactors by james a. The outlet water of industries and human which accedes the limit of organic and inorganic. Abstract the relatively rapid introduction of rotating biological contactors. 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. Sep 21, 2017 the advantages of using rotating biological contactors rbc in wastewater treatment plants outweigh the disadvantages of installing and operating the system. 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. Process design, parts, upgrades and complete replacement services. Rotating biological contactors are an efficient fixedfilm wastewater technology well suited for secondary andor advanced biological treatment.
The longterm reliability of this process is evident in the thousands of units. In parallel, community and commercial development in ecological sensitive areas requires a solution that is adapted to modern lifestyles. Pdf nitrogen oxidation consortia dynamics influence the. It is a unique adaptation of the movingmedium biofilm system which facilitates easy and effective oxygen transfer. Feb 16, 2017 a rotating biological contactor or rbc is a biological treatment process used in the treatment of wastewater following primary treatment. Textile wastewater contains contaminants such as suspended and colloidal solids also have starch and dextrin. In the past 30 years of company development, we have improved our techniques and have continued to upgrade our products. Performance of rotating biological contactor in wastewater. Rotating biological contactor rbc a suspendedfixed growth biological treatment processes used to consume organic matter.
The discs sit within a trough, with approximately 40% of their diameter covered by the liquid. Biological wastes 29 1989 271277 a rotating biological extended contactor mirostaw krzemieniewski department of water chemistry and waste treatment, agrotechnical university of olsztyn, 10957 olsztyn, poland received 10 september 1988. The rotating biological contactors rbcs or simply biodiscs are part of the socalled biofilm. This is not a forum for general discussion of the articles subject put new text under old text.
A rotating biolgoical contactor rbc, is a secondary biological treatment process which utilizes a rotating shaft surrounded by plastic media discs. Operation of rotating biological contactor study on sewage treatment plant. Due to continuous technological growth and industrialization, the water has been fully polluted and categorized as water pollution. Biological contactor was designed in cooperation with the gear reducer manufacturer for reliable and energy efficient operation. Specify the browning solution on your next rbc installation or retrofit. Brenner wastewater research division municipal environmental research laboratory cincinnati, ohio 45268 and walter g. 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. Rotating biological contactor rotating biological contactors, commonly called rbcs, are used in wastewater treatment plants wwtps. The disadvantages of rotating biological contactors. The rotating biological contactor process offers the specific advantages of a biofilm system in treatment of wastewater for removal of soluble organic substances. Removal of organic matter has been targeted within organic loading rates of up to 120 g m. Rotating biological contactors for wastewater treatment a. 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.
Hence there is a board scope for cheaper and compact unit processes or ideal solutions for such issues. A rotating biological extended contactor sciencedirect. Review paper on study of rotating biological contactor for. Click here to start a new topic please sign and date your posts by typing four tildes new to wikipedia. Operation of rotating biological contactor study on sewage. This report documents the design process, the building. Conventional wastewater treatment systems are ageing throughout communities and municipalities and will need to be replaced sooner or later.
Rotating biological contractor is one type of treatment system. By mounting the drive directly on the shaft adjustable bases are not required. The biomasscoated media are alternately exposed to wastewater and atmospheric oxygen as the shaft slowly rotates at 11. Wwtw including rotating biological contactors rbcs. This thesis is a study of the rotating biological contactor. Based on literature data, the expected nitrogen in. Rotating biological contactor biofilm method wastewater. During this time, oxygen is transferred from the air to the slime. It has been widely used for the secondary treatment of domestic and industrial wastewater. Rbcs may be the best process choice for some wastewater treatment plants because of their proven simplicity, reliable performance, and low energy usage particularly. Performance and operation of a rotating biological contactor. Rotating biological contactor sewage treatment reverse.
Operation of rotating biological contactor study on. Treatment system with rbc can be designed to provide to provide secondary or advanced level of treatment. Rotating biological contactors rbcs were originally developed in europe and recently accepted by america and asia. 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. The drive system is mounted directly on the stub end of the shaft for ease of installation and maintenance. Phenol degradation in rotating biological contactors israni 2002. The rotating biological contactor rbc is a fixed film biological secondary treatment device. The rotating biological contactor has gained great trust for its superior durability and wastewater purification function, and has made us a leading manufacturer. The most likely cause of massive sloughing of the biological slime growth from an rbc shaft.
Overview wastewater treatment processes in use today may be broadly categorized as either fixed film processes or suspended growth processes. Full nitrification is achievable under appropriate process conditions with oxidation rates of up to 6 g m. Operational problems with rotating biological contactors john a. Biological treatment of municipal and industrial wastewater for carbon removal and nitrification in the mixing and separation system for new installations or replacement of existing rotating biological contactors for connection sizes 5030000 pe for the treatment of landfill leachate water. The advantages of using rotating biological contactors rbc in wastewater treatment plants outweigh the disadvantages of installing and operating the system. Brazil usdaagricultural research service, national center for cool and cold water aquaculture, kearneysville, wv 25430, usa. During the 1970s and early 1980s, the rotating biological contactor process rbc, a particularly efficient fixed film process, became popular. The information presented herein is intended to supplement, not replace, commonlyused rbc design tools such as manufacturers design manuals and catalogs and design. Envirodisc rotating biological contactors rbc provide highly efficient fixed film bod and ammonia removal with low. Summary of design information on rotating biological. In this paper the details of experimental model and results obtained on experimental investigations of treatment process are presented. In the initial design phase, the type and size of the reactor were determined. Rotating biological contactors spiral imperial college. Rotating biological contactors rbcs consist of vertically arranged, plastic media on a horizontal, rotating shaft.
Treatment of municipal wastewater by using rotating. The organisms in the slime remove organic matter from the wastewater for aerobic decomposition. The rotating biological contactor rbc has been used in europe for many years to treat both municipal and industrial waste waters. The shaft continually rotates at 2 to 8 rpm, and a layer of biological growth 2 to 4 mm thick is soon established on the wet surface of each disk. Water is the most important natural gift for human being and aquatic life.
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