THM removal Articles
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3 Important Considerations For Successful THM Removal
1) Trihalomethane (THM) removal is not one size fits all. Make sure your system is properly evaluated. Most systems have unique characteristics that must be accounted for from the start. Understanding how a given system works… volumes… fill rates… tank dimensions… inlet / outlet configurations… desired THM removal rates… are all critical for THM ...
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Trihalomethane (THM) Removal Design Parameters, Testing, & Performance Evaluation
Practical real-world experiences combined with on-going innovation are the cornerstones for all Medora Corporation THM (trihalomethane) and other VOC (volatile organic compound) spray aeration removal systems. We have hundreds of successful SN Series Systems currently in use and are continuously conducting internal THM removal tests to provide the best product and result for our Customers. The ...
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Potable tank mixing & THM removal - Case study
Topics: potable, THM removal, TTHM, stratification/water age, chlorine Overview: This location consists of three potable water tanks serving the potable water needs of a city. These three tanks, Tanks 100, 110 & 120, are steel ground storage tanks with an average capacity of 2.4 MG, average tank height of 24 ft. and an average diameter of 134 ft. The average flow rate is 355,000 gpd ...
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Trihalomethane Removal In Municipal Drinking Water Storage Tanks
There are many, many considerations to take into account when researching and implementing a trihalomethane (THM, TTHM) removal strategy for your drinking water system. It can all get very complex in a hurry. For the sake of this blog article however, we are going to focus only on THM volatilization removal strategies through the prism of water surface area. THM Removal Via Volatilization ...
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THM Removal in a 1MG Steel ground storage tank - Case study
>75% reduction in TTHMs achieved. Topics: trihalomethane reduction, spray aeration Contact Information Further information may be available upon request. Please contact Medora Corporation via phone at 866-437-8076 or by e-mail, info@medoraco.com Tank / Reservoir Build Information: Volume: 1 MG Type: Ground Storage Tank (GST) Construction: Welded Steel Height: 25 feet Diameter: 85 ...
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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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Trihalomethane (THM) Removal in a Clearwell - Case Study
60% reduction of total THMs achieved. No more worries about EPA compliance. Topics: clearwell, certified tests, chlorine, trihalomethane reduction, stratification System Overview: This is a two (2) clearwell system with water flow in series through Clearwell #1, Clearwell #2, then to distribution. Clearwell Build Information: Tank Type: Two identical partially buried concrete tanks Tank ...
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Raw Water Reservoir - Cyanobacteria, Manganese, & Iron Mitigation (ID24) - Case Study
Topics: blue-green algae, taste & odor, THM removal, TTHM, hypolimnetic oxygenation, MN and FE control, treatment savings Overview: This reservoir is the raw water supply reservoir for a city, with the water treatment plant (WTP) situated adjacent to the lake. This man-made reservoir has a surface area of about 48 acres, with an average depth of 10 ft and a maximum depth of 14 ft near the ...
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THM Removal in Potable Water Storage Tanks - Case Study
City tests various trihalomethane removal systems to ensure full EPA compliance. Topics: trihalomethane, THM, TTHM, spray aeration, potable water tanks, GridBee® SN Series THM Removal System Project Overview: This location had a tank battery of four similar 1.5 MG bolted steel tanks installed serving as temporary storage during the planning & construction of two 6 MG pre-stressed ...
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THM Removal in Two 300,000 Gallon clearwells - Case study
Greater than 60% THM reduction observed Topics: clearwell, certified tests, chlorine, trihalomethane reduction, stratification System Overview: Water flows in series through Clearwell #1 to # 2, then onto distribution. Tank / Reservoir Build Information: Tank Type: Two (2) Identical, Cylindrical, Steel GST Tank Size (Gallons): 300,000 Height (ft.): 16.75 Diameter (ft.): 58 Roof Type: ...
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Potable tank mixing & THM removal - Case study
Topics: potable, THM reduction, TTHM, stratification/water age, chloramine Overview: This tank is a multi-leg, torus-bottom tank with a capacity of 300,000 gallons. Overall tank height is 84 ft.; the wet riser height is 49 ft. and the height of the bowl is 35 ft. The maximum fill rate is 560 GPM, and typical inflow is estimated at 300,000 GPD. The water source for the treatment plant is a ...
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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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A Simple Method to Reduce Disinfection By-product Formation
The formation of disinfection byproducts (DBP) during drinking water production has long been of concern toauthorities and consumers alike. Although most disinfectants form unwanted DBPs there is particular concern withchlorine disinfection as a variety of chlorinated compounds are formed with possible adverse health effects, includingtrihalomethanes (THMs). Strategies for controlling THM ...
By Ixom
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GAC Value Exceeds Expectation
Untitled Document Summary: It appears that the time span in which GAC will remove THMs can be measured in months - perhaps even years - at the Davenport, Iowa, water treatment facility. Research by EPA, the American Water Works Association, and other groups on the adsorptive capacity of granular carbon for trihalomethanes had indicated that removal of THMs by ...
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Clearwell thm removal consulting engineer report - Case study
Introduction In July, 2014 the [City] contracted with Medora, Inc for the purchase and installation of a spray aeration system including: one ventilator, seven SolarBee spray aeration units, and one SolarBee mixer at the [8 MG Reservoir]. Contract requirements for the spray aeration system included a performance evaluation to verify the installed system provided a minimum net reduction of 35% in ...
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You Can Keep Your Tanks Full After Installing Mixing or a Trihalomethane (THM) Removal System
Many systems rely on deep draw downs, low tank levels, and flushing to break temperature stratification and keep trihalomethanes from becoming more of a problem. This can prove useful for the short term but it isn’t a very reliable long term water quality solution. It can also leave your system seriously vulnerable in emergency situations such as fire protection and service disruptions ...
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Flocculation performance of magnetic particles with high-turbidity surface water
The sharp increase in raw-water turbidity following heavy rain presents considerable treatment problems due to low sedimentation rates. The objective of this study was to evaluate the removal of negatively charged suspended solids (SS) in surface water treatment using magnetic particles (nFeO; FeO · Fe2O3) synthesised in our laboratory. The performance of nFeO in removing turbidity, ...
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Potable tank THM reduction - Case study
Overview: This tank is a concrete cylindrical potable water storage tank that serves the area's distribution system. The tank is 130 ft. diameter x 22 ft. high, with a capacity of 2.0 million gallons (MG). The maximum inflow rate is 6.3 million gallons per day (MGD). The tank receives water from a reservoir, which is treated at a water treatment plant. This plant is a direct filtration surface ...
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Potable tank THM reduction - Case study
Topics: potable, THM reduction, TTHM, chlorine, stratification/water age Overview: This tank is a concrete cylindrical potable water storage tank that serves the area's distribution system. The tank is 130 ft. diameter x 22 ft. high, with a capacity of 2.0 million gallons (MG). The maximum inflow rate is 6.3 million gallons per day (MGD). The tank receives water from a reservoir, which is ...
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Raw water reservoir - Case study
Topics: blue-green algae, taste & odor, THM removal, TTHM, hypolimnetic oxygenation, MN and FE control, treatment savings Customer: Contact information is available upon request from Medora Corporation: 866-437-8076 info@tnedoraco.com Overview: This reservoir is the raw water supply reservoir for a city, with the water treatment plant (WTP) situated adjacent to the lake. This man-made ...
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