elevated tanks Articles
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Active Mixing In A 500K Gallon Elevated Tank - Case Study
Stagnation and temperature stratification issues eliminated. Topics: 500,000 gallon elevated tank, stratification, stagnation, water age System Overview: This is a small municipal system serving ~3,000 people via 1,300+ connections. Their source water is from a local river. Disinfectant Type: Chloramine Tank / Reservoir Build Information: Tank Type: Elevated Storage Tank Construction: ...
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A robust approach based on time variable trigger levels for pump control
An approach for the control of a pumping plant feeding a tank at the inlet of a water distribution system is presented. The approach is aimed at minimizing the energy costs by maximizing pumping during off-peak electricity tariff periods. It is based on trigger levels which are variable during the day according to a prefixed pattern in order to ensure that the water level in the elevated tank ...
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Diamondhead, MS - 500,000 Gallon Torus Bottom Elevated Tank
The Village of Diamondhead, MS was very fortunate to have received a high quality paint job when their tank was first constructed in 1976. In 2009 when Caldwell was selected to perform the work on this project, the original paint system was still in place on the exterior of the tank, with only overcoats having been applied on top of it. However, the years had taken their toll and the lead primer ...
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Development and application of the anarchic society algorithm (ASO) to the optimal operation of water distribution networks
Optimizing the design and operation of urban water distribution networks (WDNs) is a complex, nonlinear problem. The optimization of WDNs can be performed for the pumping schedule, the location and elevation of reservoirs, the physical characteristics of pipes, and the placement of pressure-reducing valves, among other objectives. This study applies the anarchic society optimization (ASO) ...
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Project - Conrady Consultant Services
Conrady Consultant Services has been a pioneer in water storage tank inspection for the last 30 years. Based out of Alabama, the family-owned and operated company began diving into tanks in 1982 until they transitioned to ROV inspections in 2004. Conrady Consultants purchased their first ROV from another manufacturer in 2004. They eventually had to purchase a second unit when the system’s ...
By VideoRay LLC
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Tank Rehabilitation and Maintenance Case Study: Ware Shoals, SC - 250,000 Gallon Torus Bottom Elevated Tank
After years of bidding one-time repaint contracts, the Town of Ware Shoals, SC found that their tank was receiving only limited "maintenance". The exterior of the tank had been overcoated multiple times, but lead primer below was still present. As the paint thickness built up, the Town discovered that they could no longer continue to add more coats of paint. As a result, the tank exterior would ...
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570,000 Gallon Aquastore CE Tank Helps Improve Service
Engineering America, CST Storage Channel Partner completes installation of Aquastore® composite elevated storage tank for the Public Wholesale Water Supply District No. 4. The water district sells water to other water districts and municipalities, and is located just north of Altamont, Kansas. Ken McNickle, Manager for the water supply district said the tank that sits on top of the concrete ...
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ResidualHQ Automated Disinfectant Control - Case Study
Low residuals solved with reliable disinfectant monitoring, management & delivery. Topics: disinfectant residual, chloramine, tank mixing, nitrification Tank Overview: Type: Elevated storage Construction: Welded steel Total Height (ft): 120 Bowl Height (ft): 20 Diameter (ft): 24 Volume (gallons): 200,000 Maximum Flow (gallons/day): 200,000 Maximum Fill Rate (gallons/minute): ...
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The role of balancing tanks in optimal design of water distribution networks
Optimisation and reliability assessment of water distribution networks are complicated processes. Most of the research focuses only on the pipes without considering other network components, such as tanks. Despite the benefits that the tanks may bring, they are usually omitted in the optimisation process or in reliability considerations. Various indices from the literature that describe network ...
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Small town SCADA yields big-time results - Case Study
Rural county now able to monitor & control pumps, gather valuable data in real time Marlboro Water Co. (MWC) is a small water utility nestled in the Pee Dee area of South Carolina, a region rich with natural resources—including freshwater streams, forests dense with hardwoods and abundant wild game. MWC acquires water from the Middendorf Aquifer, which supplies five groundwater wells ...
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Bulk Liquid Storage Tanks – What’s the difference?
Bulk liquid storage tanks are able to handle various types of liquids in most any situation. We’ve covered it here and we’ve also covered which industries utilize our liquid storage tanks (beyond the oil and gas industry). Now let’s look at some differences in our tanks. There are two major differences in our standard 21,000 gallon storage tanks based on the design of the ...
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La county trusts Singer’s anti-cav trim - Case Study
Their Challenge At Pepperdine University, even the horses kicked up a fuss about how noisy a nearby valve was when it opened and closed. The horse stable stood next to a reservoir tank in the pressure zone at an elevation of 545 feet. The valve, which was at the tank’s inlet, was serviced by a high pressure line from 812 feet elevation. “The valve vibrated so much it scared ...
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GS Series Tank Mixing, Short-Circuiting, Stratification, Chlorine Residuals, Ice Mitigation (ID195) - Case Study
Topics: Potable, ice buildup, stratification/water age, short-circuiting, chlorine Overview: This tank is an elevated single pedestal, welded steel pedisphere. The height of this tank is 110 ft. and diameter is 30 ft. This tank has a capacity of 100,000 gallons. This system meets the potable needs of this community of approximately 789 residents. The water comes from two groundwater wells, each ...
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Reservoir & South tower - Case study
Topics: potable, stratification/water age, chloramine, short-circuiting, ice buildup, nitrification Overview: The Reservoir is a 2 MG underground storage reservoir (122' x 182' x 13.5' high) that typically holds about 1.5 MG at about 8' deep. Together with a 1 MG plant reservoir they serve the potable needs of about 8,000 residents. The combined reservoir systems service two 0.5 MG elevated ...
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Langs Crossing Tank – Farmville, NC – Greene County - Case Study
Caldwell used over 350 tons of steel and over 1,000 cubic yards of concrete to construct these two 1,000,000 gallon CETs at two separate sites under this one contract for the Town of Farmville. Caldwell's performance on this project was outstanding as exhibited by our ability to expediently design the foundation and steel components of the project, order material, install the foundation, ...
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DAF Wastewater Treatment System - Case study
Dr. Oetker, a company that produces frozen pizzas, required a treatment system to reduce the wastewater load and meet municipal government regulations for their new North American manufacturing facility located in London, Ontario, Canada. H2Flow provided a physical/chemical treatment system based on dissolved air floatation which is designed for a flowrate of 4.2 m3/hr. H2Flow provided a ...
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Federal Correctional Facility – Aliceville AL – Pickens County - Case Study
Caldwell is pleased to have teamed with Caddell/Yates Joint Venture of Montgomery, AL as part of the construction of Alabama's first federal prison for female criminals. The 1,400-inmate facility is expected to be an economic boom for Pickens County and the surrounding Black Belt communities. Caldwell constructed this tank utilizing over 305 tons of steel and 200 cubic yards of concrete. ...
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Case study - Client: City of Chicago, Parks Division
Project: Rooftop rainwater to flush toilets. Comfort stations at 40th Street and Osterman Beach. Challenge: The Parks Division of the City of Chicago wanted to its two new comfort stations along the Lake Michigan Lake Shore Drive to be environmentally responsible and serve as demonstration projects for the the city's efforts toward sustainable design. Solution: Architects Muller & Muller ...
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Singer valve solves triple dilema in Ohio - Case Study
Their Challenge Butler County, which purchases water wholesale to provide drinking water to its population of 100,000, faced three problems. 1. Extreme pressure drops at a pressure reducing and metering facility, resulting in severe cavitation damage and extreme noise to two valves. 2. The inability to sequence the two valves. 3. The inability to accurately control levels in two remote storage ...
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Northwestern Lancaster, Pennsylvania - Case Study
In August 2011, AdEdge Water Technologies, LLC was contacted by Watek Engineering Corporation to design, manufacture and start up a nitrate removal system and a softening system for the Northwestern Lancaster County Authority in Manheim, Pennsylvania. The existing water system consisted of one well feeding water at 225 gpm to an elevated storage tank which feeds the distribution system. The ...
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