conventional activated sludge Articles
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Manitou Drive Biosolids Drying Facility – Application Profile - Case Study
About the Project The WWTP is a conventional activated sludge process with chemical phosphorus removal, anaerobic sludge digestion and sodium hypochlorite disinfection, and has a rated design capacity of 123 million litres/day (MLD). The treated effluent is discharged to the Grand ...
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Manitou Drive Biosolids Drying Facility - Case Study
About the Project The WWTP is a conventional activated sludge process with chemical phosphorus removal, anaerobic sludge digestion and sodium hypochlorite disinfection, and has a rated design capacity of 123 million litres/day (MLD). The treated effluent is discharged to the Grand ...
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Woodmark, Texas - AccuFAS - Biological Treatment installations applications - Case Study
Application The conventional activated sludge (CAS) plant in Woodmark had reached its design capacity and was having difficulty meeting ammonia discharge limits. By selecting the AccuFAS system, attached growth on the media was able to increase sludge inventory in the basin, and therefore, significantly increase nitrification capacity. Since installation, AccuFAS has consistently met discharge ...
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Hybrid activated sludge/biofilm process for the treatment of municipal wastewater in a cold climate region: a case study
A hybrid activated sludge/biofilm process was investigated for wastewater treatment in a cold climate region. This process, which contains both suspended biomass and biofilm, usually referred as IFAS process, is created by introducing plastic elements as biofilm carrier media into a conventional activated sludge reactor. In the present study, a hybrid process, composed of an activated sludge and ...
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Case study: Municipal WWTP
OverviewAn urgent improvement of the effluent quality of the old existing WWTP of Yavne was required by the Environmental Ministry of Israel. RequirementEffluent from the Yavne WWTP used to be discharged into a river which flows into the Mediterranean Sea. Years of inadequate treatment in two extensive ponds caused severe pollution. As a result, the Environmental Protection Ministry of Israel ...
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Applicability of the sequencing batch reactor for wastewater treatment
The sequencing batch reactor is a viable and flexible tool for the treatment of domestic and industrial wastewater. It removes not only carbonaceous matter, but also nitrogenous species and some biological nutrients. From the economic and operational points of view, it has advantages over the so-called conventional activated sludge system. Besides this, it can be used in various wastewater ...
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Case Study 2: Municipal Treatment with Centrifuge Dewatering
Treatment Plant Conventional activated sludge treatment, with primary and secondary clarification and chemical phosphorous removal. Population serviced: 600,000 Average daily flow: 100 MIGD(450 MLD) Sludge production: 30 t/day Application Equipment: High solids Sharples centrifuges Old Mixer: Direct in-line addition New mixer: 6” OPTIFLOC™ Flow: 100 – 130 IGPM ...
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Comparison of nutrient-removing microbial communities in activated sludge from full-scale MBRs and conventional plants
The composition of nutrient-removing microbial communities in five full-scale membrane bioreactors (MBRs) was investigated using fluorescence in situ hybridization and 16S rRNA pyrosequencing and compared to similar analyses of conventional activated sludge (CAS) communities. The communities were highly similar but some genera that are always present in enhanced biological phosphorus removal ...
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Oxygen transfer in activated sludge – new insights and potentials for cost saving
The α-factor has the greatest impact on the calculation of the required standard oxygen transfer rate (SOTR) in activated sludge systems equipped with submerged aeration systems. Knowing the dependencies of the α-factor leads to a better design of the aeration devices and, consequently, to a more efficient use of aeration energy. Applying the current state of knowledge about oxygen transfer leads ...
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WWTP Yavne, Israel A Case Study
Case Study: Municipal WWTPClient: Municipality of Yavne, IsraelStart Up: September 2005Capacity: 6,000 m3/d Overview An urgent improvement of the effluent quality of the old existing WWTP of Yavne was required by the Environmental Ministry of Israel. Requirement Effluent from the Yavne WWTP used to be discharged into a river which flows into the Mediterranean Sea. Years of inadequate ...
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Aerobic sludge granulation: state-of-the-art
Recently, the research focused on the development and operation of aerobic granular biomass has increased in interest, due to the advantages of this option as compared to the conventional activated sludge systems traditionally used for the biological treatment of wastewater. The aerobic granular sludge is produced in Sequential Batch Reactors (SBR) where a large amount of biomass is accumulated ...
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Case Study 1: Municipal Treatment with Belt Filter Press
Sewage Treatment Plant Conventional activated sludge treatment, with primary and secondary clarification and chemical phosphorous removal. Population serviced:320,000 Average daily flow:42 MIGD (190 MLD) Sludge production:50 t/day Application Equipment:Simon-Ashbrook-Hartley 2 m belt press Old Mixer:Venturi (flapper valve) New mixer:6” OPTIFLOC™ Flow:70 – 130 IGPM ...
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Oostanaula Creek WWTP; Jet MCR Multi-Channel Orbital BNR - Case Study
The Oostanaula Creek WWTP in the City of Athens, TN was a forty year old conventional activated sludge facility permitted for 2.83 MGD. Client: Oostanaula Creek WWTP in the City of Athens, TN; Jet MCR Multi-Channel Orbital BNR Process Solution: Jet MCR Multi-Channel Orbital BNR Process Background: The facility consisted of two twelve foot deep concrete lined earthen basins with low speed ...
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ISAM Sequencing batch Reactor375 m3/day - Case study
This project was incorporated as part of an existing municipal treatment plant expansion, and the effluent is discharged to a nearby surface water stream. The plant is now operated by the Ontario Clean Water Agency. H2FLOW EQUIPMENT INC. supplied a complete package with a PARKSON 6mm fine screw screen unit followed by a FLUIDYNE ISAM SBR system including blowers, and a TROJAN UV3000 PTP ...
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Treatment of mixed municipal and winery wastewaters in a conventional activated sludge process: a case study
ABSTRACTThe possibility of co-treating municipal and winery wastewaters in a conventional activated sludge process was studied at full scale. The wastewater treatment plant considered in this paper operated an extended-oxidation process during vintage (four month per year) and a pre-denitrification/oxidation process during the rest of the year. The experimentation showed that good performances, ...
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Comparison of behaviour and fate of tetrabromobisphenol A (TBBPA) in membrane bioreactors and conventional activated sludge process
Research was completed on the behaviour and fate of tetrabromobisphenol A (TBBPA) in pilot-scale membrane bioreactors and conventional activated sludge (CAS) process at the City of Guelph Wastewater Treatment Plant. Emphasis was on the physicochemical processes, biological transformation and sorption kinetics. Measurement of TBBPA at the environmental level can be challenging, so the main focus ...
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Application of a membrane bioreactor for winery wastewater treatment
Winery wastewaters are variable in nature and are hard to treat by means of the conventional activated sludge process because of the high organic loading associated with their production, especially during vintage. To face this situation, recently, membrane bioreactors have been widely applied to treat winery wastewaters. In this study, a full-scale membrane bioreactor treated some 110 m3/d of ...
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Treatment of municipal landfill leachate using magnetic porous ceramsite carrier
In this study, porous ceramsite carrier was modified using magnetic material as raw material. The magnetic porous ceramsite carrier was applied to the treatment of municipal landfill leachate. The results showed that the removal efficiency of chemical oxygen demand (COD), NH3-N and Cr6+ in the supernatant were all more than 90% after 30 days with the aeration rate of 3 L/h, the ...
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Long-term performance of side-stream deammonification in a continuous flow granular-activated sludge process for nitrogen removal from high ammonium wastewater
An innovative granular sludge deammonification system was incorporated into a conventional-activated sludge process. The process incorporated an internal baffle in the bioreactor for continuous separation of granular biomass from flocculent biomass, which allowed for controlling the solids retention time of flocculent sludge. The process was evaluated for ammonium removal from municipal ...
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The investigation of the sludge reduction efficiency and mechanisms in oxic–settling–anaerobic (OSA) process
This paper aims to provide a full understanding of the sludge reduction mechanisms in the oxic–settling–anaerobic (OSA) process and presents an evaluation of the sludge reduction efficiencies and sludge characteristics in this process compared to the conventional activated sludge process. Fifty-eight percent reduction in observed yield in the OSA process was achieved compared to the control ...
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