aerobic sludge digestion Articles
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Examples of energy self-sufficient municipal nutrient removal plants
In Austria, two municipal WWTPs (the Strass TP and Wolfgangsee-Ischl TP) operated with nutrient removal and aerobic sludge digestion are now energy self-sufficient. This is the result of a long-standing and on-going optimisation process at both plants including optimal aeration control and control of the aerobic section of the aeration tank to optimise denitrification and prevent degradation of ...
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Florida, USA - Advanced Sequencing Batch Reactor - Case Study
300,000 gpd ASBR facility replaced the existing concrete and steel conventional extended aeration activated sludge treatment, secondary clarifiers, and aerobic sludge digesters. Receives wastewater collected from 14 neighborhoods, residential housing, nursing homes and hospital facilities on a 425 acre site. Wastewater treatment comprises flow metering, fine screening and washing, grit ...
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Wastewater Treatment for a soft drink processing company
Description of the plant The wastewater from production and filling of mineral waters and soft drinks is pre-treated mechanically by a screen and buffered in an aerated mixing and balancing reactor. After equalization of flow and load the wastewater is given to the biological reactors where organic substances as sugar and other organic compounds are decreased by biological activity of ...
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Screentecs 4 years maintenance is $0 Mendocino, CA - 2010 - Case Study
As representatives of a small community, the Mendocino City Community Services District administrators felt strongly that they needed to deliver terrific wastewater treatment value at the lowest cost for their taxpayers. But they knew they needed to make a change, as their existing wastewater treatment system left unwanted solid accumulations at numerous points throughout their 1MGD treatment ...
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Small waste water treatment plant - Case study
Application Small Waste Water Treatment Plant – Michigan Growing Village with 886 Population per 2000 census Nominal 30,000 Gallon Digester Capacity Material Aerobically Digested Sludge 1.5 – 2% Solids, Alum Treated Problems & Challenges The Dated Plant Design uses Drying Beds that are too small and do not work in all weather. Labor and Equipment Cost of ...
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MCCSD Case Study
As representatives of a small community, the Mendocino City Community Services District administrators felt strongly that they needed to deliver terrific wastewater treatment value at the lowest cost for their taxpayers. But they knew they needed to make a change, as their existing wastewater treatment system left unwanted solid accumulations at numerous points throughout their 1MGD ...
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Consumer beverage waste water pre-treatment plant - Case study
Application Consumer Beverage Waste Water Pre-Treatment Plant Material Aerobic Digested Sludge .5% -.75% Solids Problems & Challenges Very Difficult Sludge to Dewater due to Low Bulk Solids and Process Issues Existing 1.5 Meter Press Single Belt Unit Process Rate of 8 – 12 GPM is Too Slow to Effectively Remove Sludge from the Plant Free Water Visible in the Roll Off ...
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Aerobic biological treatment of thermophilically digested sludge
Aerobic biological treatment of digested sludge was studied in a continuously operated laboratory set-up. An aerated reactor was filled with thermophilically digested sludge from the Moscow wastewater treatment plant and inoculated with special activated sludge. It was then operated at the chemostat mode at different flow rates. Processes of nitrification and denitrification, as well as ...
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CH#826 - Municipal Oxidation Ditch
BackgroundThe treatment plant at this Midwestern City is a well operated facility treating approximately 1.1 mgd municipal waste from the surrounding community. Over the past several years the publicly owned treatment works has consistently been able to produce an excellent quality effluent with respect to BOD, suspended solids, ammonia and phosphate. To achieve this level of treatment, the ...
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Membrane thickening aerobic digestion processes
Sludge management accounts for approximately 60% of the total wastewater treatment plant expenditure and laws for sludge disposal are becoming increasingly stringent, therefore much consideration is required when designing a solids handling process. A membrane thickening aerobic digestion process integrates a controlled aerobic digestion process with pre-thickening waste activated sludge ...
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Clay county utility authority taps BCR to cut biosolids management costs - Case study
Clay County Utility Authority’s (CCUA) installed Neutralizer® systems at each of its four wastewater treatment plants (WWTPs) between 2006 and 2010. The streamlined, patented two-stage Neutralizer® system treats waste activated sludge and produces Class A residuals for unrestricted land application in just a matter of hours. Long-Term Success: 43% reduction in annual operating ...
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Case study - Florida, USA – advanced sequencing batch reactor
300,000 gpd ASBR facility replaced the existing concrete and steel conventional extended aeration activated sludge treatment, settlement clarifiers, and aerobic sludge digestors. Receives wastewater collected from 14 neighborhoods, residential housing, nursing homes and hospital facilities on a 425 acre site. Wastewater treatment comprises flow metering, fine screening and washing, grit ...
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Predicting concentrations of trace organic compounds in municipal wastewater treatment plant sludge and biosolids using the PhATE™ model
This article presents the capability expansion of the PhATE™ (pharmaceutical assessment and transport evaluation) model to predict concentrations of trace organics in sludges and biosolids from municipal wastewater treatment plants (WWTPs). PhATE was originally developed as an empirical model to estimate potential concentrations of active pharmaceutical ingredients (APIs) in US surface and ...
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Sludge digestion instead of aerobic stabilisation – a cost benefit analysis based on experiences in Germany
As a consequence of a worldwide increase of energy costs, the efficient use of sewage sludge as a renewable energy resource must be considered, even for smaller wastewater treatment plants (WWTPs) with design capacities between 10,000 and 50,000 population equivalent (PE). To find the lower limit for an economical conversion of an aerobic stabilisation plant into an anaerobic stabilisation ...
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Aerators Enhance Aerobic Digestion Process
The city of Eden,N.C.,operates an extended aeration process designed for an average flow rate of 13.5 mgd with a mixed liquor suspended solids concentration that typically checks in about 6,000 mg/l. This high biomass concentration is necessary to provide a well-settling sludge and good effluent quality. Further, the plant influent is approximately 40% domestic wastewater and 60% industrial ...
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Molecular Chemical Grinder Improves Digestion in Sludge
Municipal wastewater treatment plants (WWTPs) can reduce the costs and liabilities of sludge handling and disposal and increase their organic solids conversion rate with the Advanced Fluidized Composting (AFC) Process or the Advanced Fluidized Co-Digeson & Co-Generaon (AFC2) Process from BioConversion Soluons, LLC (BCS). The conventional sludge treatment techniques of aerobic and anaerobic ...
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GEM + UASB: Tortilla Processing - Case Study
Introduction A prominent tortilla manufacturer was designing a new production facility using nixtamal (grinding of corn) into tortillas. Prior to gaining approval for the new facility, it was imperative that Client submit a wastewater treatment plan for permit. Specific design issues, such as fire roads and utilities, required careful planning with Client’s full design team (electrical ...
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Methane emission estimates using chamber and tracer release experiments for a municipal waste water treatment plant
This study presents two methods for estimating methane emissions from a waste water treatment plant (WWTP) along with results from a measurement campaign at a WWTP in Valence, France. These methods, chamber measurements and tracer release, rely on Fourier transform infrared spectroscopy and cavity ring-down spectroscopy instruments. We show that the tracer release method is suitable for ...
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Waste Water Treatment Processes Explained
SUNCOAST WASTE WATER MANAGEMENT presents AEROBIC -verses- ANAEROBIC THE AEROBIC PROCESS There are two basic types of sewerage treatment processes, which are the Aerobic process and the Anaerobic process. Aerobic means with air or oxygen and Anaerobic (septic) means without air or oxygen. Aerobic bacteria are a higher life form and when digesting waste are utilising dissolved oxygen or air ...
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