small aerator Articles
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The ORP and pH profiles during simultaneous nitrification and denitrification of low carbon municipal wastewater
The ORP and pH profiles and the stability of Simultaneous Nitrification and Denitrification (SND) for low carbon municipal wastewater treatment were investigated under the different aeration modes in Sequencing Batch Reactor (SBR). The results showed that the 92% removal efficiency for TN, the smallest average level of ORP and both of the variation of ORP and pH values are achieved in ...
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THM Removal in a 750,000 gallon tank - Case study
>60% reduction in TTHMs achieved. Topics: trihalomethane reduction, spray aeration System Overview: This municipality purchases water from a neighboring community. Disinfectant Type: Chlorine Tank / Reservoir Build Information: Name: East Tank Volume: 750,000 gallons Construction: welded steel Height: 45 feet. Diameter: 60 feet Type: ground storage Daily Inflow: 150,000 gallons ...
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Nitrification of municipal effluents in fluidised bed reactors using immobilised microorganisms
1. The problem Existing municipal effluent treatment plants designed earlier for the BOD removal are usually not suitable for nitrification at low temperatures, because of : Small plant dimensions and low sludge age, respectively Biokinetical reasons. Consequences are that in the cases of nitrification expensive plant extensions are required. 2. Our problem solution results in Plants ...
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Energy audit in small wastewater treatment plants: methodology, energy consumption indicators, and lessons learned
Energy audits in wastewater treatment plants (WWTPs) reveal large differences in the energy consumption in the various stages, depending also on the indicators used in the audits. This work is aimed at formulating a suitable methodology to perform audits in WWTPs and identifying the most suitable key energy consumption indicators for comparison among different plants and benchmarking. ...
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Understanding F:M Ratio
F:M ratio as a theory is one of the most important aspects in wastewater treatment but also one of the most poorly understood concepts. Occasionally textbook numbers are good guides, however there are many instances in which understanding the complexity of F:M ratio may help to provide further insight. As a consultant it is very common to see strong emphasis on calculations such as F:M ratio. ...
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MABR: Familiar WWTP Principles, Better Results
Wastewater treatment plant (WWTP) designers and decision-makers tasked with finding more cost-effective performance for challenging applications want new options. Here is how flat-sheet membrane aerated biofilm reactor (MABR) technology tweaks the chemical and biological functions of conventional activated sludge (CAS) processes to reduce energy consumption and operating expenses (OPEX) in ...
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Nitrification of municipal effluents in fluidised bed reactors using immobilised microorganisms
1. The problem Existing municipal effluent treatment plants designed earlier for the BOD removal are usually not suitable for nitrification at low temperatures, because of Small plant dimensions and low sludge age, respectively of biokinetical reasons. Consequences are in the cases of required nitrifications expensive plant extensions. 2. Our problem solution means the Plant upgrading ...
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What are the parameters of an extended-aeration activated-sludge system?
The activated sludge process is the most widely used biological water and wastewater treatment. As is well known, by its means, suspended-growth microorganisms are applied to breakdown wastes. Aeration, the mixing of air and a liquid, is the means used to speed the reactions involved. Aeration methods include spraying the liquid into the air; diffusing air into the liquid or agitating the liquid ...
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Containerized MBR Plant for a motorway station in Austria - Case study
For the Austrian motorway station at Murau, a membrane bio reactor with an AQQA®80 was installed by Wastewater Solutions Group in order to meet the stringent effluent requirements for discharge into a small river. The key factor in the choosing AQQA® for this project was the fact that the load of BOD, COD and Ammonia is high but nevertheless the membrane filter must perform without ...
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Effect of enhanced coagulation by KMnO4 on the fouling of ultrafiltration membranes
Pre-coagulation enhanced by KMnO4 before ultrafiltration (KCUF) was compared with normal pre-coagulation by alum (CUF) in the ultrafiltration of water from the Songhua River, China. The trans-membrane pressure (TMP) with KCUF was much lower than that when alum alone was used. With KCUF a slower increment of TMP occurred, even under conditions of high river water turbidity. The results also showed ...
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Onsite Residential Membrane Systems, Possible? - Case Study
Homeowners test the latest advancements for their wastewater treatment BioBarrier System installed by Alternative Wastewater Systems, LLC. in Idaho. Situation Since early 2001, Alternative Wastewater Systems (AWS) of Idaho has distributed Bio-Microbics products. Very familiar with the MicroFAST and other FAST systems, they wanted to try out the new BioBarrier Membrane Bioreactor (MBR) unit, ...
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Get Custom THM Stripping Without Breaking the Bank
To limit costs, consider site-specific parameters if installing off-the-shelf trihalomethane removal systems. DISINFECTION by-product (DBP) regulatory compliance requires public water systems to achieve total trihalomethane (TTHM) levels of 80 ug/L (ppb) or less for a locational running annual average throughout a community. Often a water treatment plant's most cost-effective approach is to ...
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A New, Cost-Efficient Way to De-sludge your Lagoon
Most small towns, all over the world, utilize lagoons for treating their wastewater. Many rural industries also utilize lagoons for storm-water and wastewater treatment. While industrial plants may be able to pay for activated sludge treatment of one design or another, small municipalities simply do not have a choice in treating their small populations’ wastes. If the town’s ...
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Brakebush brothers inc. Westfield, WI - Case study
The private wastewater treatment facility at Brakebush Brothers Inc., a chicken products manufacturing plant, was doing a great job removing breading and other by-product solids from waste flows. But the rural plant— a “further processing” (post-butchering) facility—produces uncommonly heavy loads of fats, oils and grease (FOG) that were taxing the aerobic treatment ...
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