building disinfection Articles
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Design-build wastewater treatment plant upgrade
Client: City of Andover Completion Date: 1997 Services Provided Design-build Extended aeration Ultraviolet disinfection Nitrification/denitrification Effluent reuse SRF funding When Andover officials realized the existing plant would not meet future needs or new effluent requirements, they decided the design-build method of project delivery would produce a new wastewater ...
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Rainwater harvesting for Harrow Boys School
Harrow Boys School have included a 20,000 litre rainwater harvesting system within a new build boarding house. The rainwater harvesting system will collect, filter, disinfect and distribute the harvested rainwater for re-use in W.C. ...
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Cheyenne Board of Public Utilities in Cheyenne, Wyoming Successfully Moves from Calcium Hypochlorite Tablets to Microclor On-Site Hypochlorite Generation
The Cheyenne Board of Public Utilities (BOPU) operates the water and wastewater systems for the capital of Wyoming which has a population of more than 63,000. Located in the fast growing Front Range Urban Corridor, BOPU is challenged by growth, periodic water scarcity and aging infrastructure. During high demand, Cheyenne disinfects approximately 2 million gallons from well fields at an ...
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Mixing a 2MG Hydropillar potable tank - Case study
Solving disinfectant residual problems and adding boosting capability. Topics: SolarBee® SB Series, solar-powered, chloramine, disinfectant boosting System Overview: Serves -38,000 City residents. Disinfectant Type: Chloramine Tank Build Information: Tank Volume (gallons): 2,000,000 Tank Type: Hydropillar, welded steel Total Tower Height (ft): 149 Tank Dimensions (ft): 54H X 98D ...
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Helping IFFCO to re-open in Pandemic - Case Study
Problem: IFFCO wanted to run their operations and provide protection from pandemic COVID-19 to their employees. They were looking for a solution that eliminates the SARS-CoV-2 category of the virus, infectious pollutants, bacteria, and all other microorganisms from the air inside the office space. They also were looking for a system that neither requires very high maintenance nor has a high ...
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Chlorate formation in water distribution systems: a modeling study
Chlorine-based disinfection agents are known to favor the production of disinfection by-products (DBPs), whose concentrations are restricted by international guidelines to ensure a safe consumption of drinking water. Hence, it is important to understand the behavior of DBPs within water distribution networks (WDNs) to avoid users' exposure to concentrations higher than guideline values. The ...
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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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Dynamic Soil Structure Interaction Analyses of North Shore Pump Station - Case Study
Project Description Located near Fisherman’s Wharf in San Francisco, North Shore Pump Station is a part of the North Point Wet-Weather Facility (NPF), which provides primary treatment for disinfection of wastewater. The facility is a two-story building that is completely embedded in soil, and the subsurface conditions include potentially liquefiable sand layers and soft Bay Mud deposits ...
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TTHM Reduction Downstream of a 1MG GST
In-tank spray aeration systems can solve TTHM problems down the line. Topics: 1MG Tank, TTHM Removal, SN Series System Overview: 90% of water in this system comes from a third-party water treatment plant and is pumped 8 miles to the H-36 Ground Storage Tank. From here the water is distributed to the western pressure zone where all Stage 2 DBPR THM sample sites are located. The system density is ...
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Active Mixing in a 19MG & 27MG Storage Basin - Case Study
Topics: potable water storage tanks, stratification/water age, short-circuiting, chlorine, treatment savings, economic System Overview: This is one of 40+ underground potable water storage reservoirs in this system. Disinfectant Type: Chlorine Reservoir Build Information: This reservoir consists of two basins. North Basin Volume (gallons): 27MG Reservoir Height (feet): 26 South Basin Volume ...
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