WASTEWATER DISINFECTION WHITE PAPERS & CASE STUDIES

Water Resource Recovery Facility Replaces its Aging UV System - Murfreesboro, Tennessee (Case Study)
Water Resource Recovery Facility Replaces its Aging UV System - Murfreesboro, Tennessee (Case Study)

Significant innovation had occurred in the 17 years since the TrojanUV4000™ was installed at the Murfreesboro Water Resource Recovery Facility. Advancements associated with system efficacy, simplified maintenance, and energy efficiency had been introduced, all of which correlate to cost savings. Such advancements can all be found in the TrojanUVSigna™ – the UV system that was selected for the upgrade.

  • Wastewater Plant Relies On Thermal Flow Meter For Co-Gen Power Gas Blending Process
    Wastewater Plant Relies On Thermal Flow Meter For Co-Gen Power Gas Blending Process

    The Rahway Valley Sewerage Authority (RVSA), which operates a large wastewater treatment plant in New Jersey, embarked on a green co-generation waste-to-energy project to power a portion of its operations. The plant’s management team became interested in pursuing the gas-to-energy power co-generation system for both environmental and cost reasons.

  • Fluence’s MABR For Wastewater Treatment features Passive Aeration And Saves Up To 90% On Energy Costs
    Fluence’s MABR For Wastewater Treatment features Passive Aeration And Saves Up To 90% On Energy Costs

    The Bordeaux region of St. Thomas had a pressing need for a wastewater treatment plant that produces high effluent quality. Its existing plant was old and did not meet regulation nor industry standards. Fluence, together with its partner SD&C Inc., built an MABR-based wastewater treatment plant from the ground up, utilizing whatever existing pieces of equipment could be used from the old plant.

  • Treatment Plant Upgrade Includes Conversion To On-Site Sodium Hypochlorite Generation To Ease Operations And Increase Safety
    Treatment Plant Upgrade Includes Conversion To On-Site Sodium Hypochlorite Generation To Ease Operations And Increase Safety

    Fairmont, Minnesota, known as the City of Lakes, is located in Martin County in southern Minnesota. The city’s water treatment plant serves a mix of customers including approximately 3,900 residential taps, 500 commercial and 17 industrial customers. Looking to the future, Fairmont city leaders began to investigate upgrading the city’s water treatment plant in 2010. The existing plant had been in operation for well over 70 years and relied on gas chlorine for disinfection.

  • Packaged Wastewater Treatment For Uneven Terrain
    Packaged Wastewater Treatment For Uneven Terrain

    Storey County, NV, just southeast of Reno, needed to replace an outdated wastewater treatment plant that serves the historic communities of Virginia City and Gold Hill. The new site was on the side of a hill, presenting challenges for the design of the plant and the orientation of its processes. Also, the new plant area was entirely within a district on the National Register of Historic Places. Read the full case study to learn how the new modular design allows for an efficient wastewater treatment solution.

  • Granular Activated Carbon: A Long-Term Solution For Meeting DPB Compliance
    Granular Activated Carbon: A Long-Term Solution For Meeting DPB Compliance

    When the Cobb County-Marietta Water Authority (CCMWA) anticipated the need to upgrade the Hugh A. Wyckoff water treatment plant, they turned to granular activated carbon (GAC) technology after vetting several alternatives. The plant, a wholesaler in a two-plant system, processes up to 72 million gallons per day and serves about 350,000 people. Comprising of Wyckoff and the James E. Quarles treatment plant, CCMWA is the second largest water provider in Georgia.

  • Pure Oxygen Injection Into A Pipeline
    Pure Oxygen Injection Into A Pipeline

    The Hagerstown Wastewater Treatment Plant in Maryland incorporated several plant modifications, one of which was the conversion of their disinfection process from the use of ozone to UV.

  • Retrofit Significantly Reduces Backwash Cycle Interval, Duration And Water Use For Georgia Utility
    Retrofit Significantly Reduces Backwash Cycle Interval, Duration And Water Use For Georgia Utility

    The North Columbus Resource Facility recently completed a $12-million replacement of its settled water filtration, removing the existing Wheeler filters, their three-part media and 10-inch poured concrete underdrains, which were no longer efficient.

  • Mitigating Environmental Impact Of Gold Mine’s Wastewater Through Ozone Oxidation And Aquifer Re-injection
    Mitigating Environmental Impact Of Gold Mine’s Wastewater Through Ozone Oxidation And Aquifer Re-injection

    Installing and operating an ozone oxidation system for wastewater remediation at a gold mine located in a remote region of Alaska is full of challenges.

  • Compact Footprint And Flexible Hydraulics Ease Initial Expansion, Leave Room For Future Growth
    Compact Footprint And Flexible Hydraulics Ease Initial Expansion, Leave Room For Future Growth

    When Plainfield, IN, needed to double their permitted capacity from 2 MGD to 4 MGD at their South wastewater treatment plant, they faced a dilemma. Like most treatment plants, space is at a premium, and compact design was needed not only for the current expansion, including the addition of a post aeration structure, but to preserve as much room as possible for projected future expansions.

  • UV Disinfection Upgrade For Water Reuse - EWA Beach, Hawaii (Case Study)
    UV Disinfection Upgrade For Water Reuse - EWA Beach, Hawaii (Case Study)

    The Honouliuli Water Recycling Facility (WRF) includes filtration and UV disinfection to treat to Class R-1 reuse standards for various uses, including irrigation. In order to maintain high-level reuse, simplify maintenance, and reduce operation costs, the Honolulu Board of Water Supply decided to replace its 15-year-old TrojanUV4000™ with a TrojanUVSigna™.  With the high cost of power in Hawaii, this system upgrade will provide significant power savings (estimated at 75%) and will enable equipment payback in less than 2.5 years.

Florida County Partners With The WateReuse Association To Find The Best Use For Reclaimed Drinking Water
Florida County Partners With The WateReuse Association To Find The Best Use For Reclaimed Drinking Water

In 2016 Hillsborough County Public Utilities, a forward thinking organization, initiated the first direct potable reuse pilot project in Florida. In its efforts to utilize 100 percent of its reclaimed water, the progressive utility created a successful program to effectively suspend surface water discharges. Read the full case study to learn more.

More White Papers & Case Studies

WASTEWATER DISINFECTION PRODUCTS

NeoTech D338™ NeoTech D338™

The NeoTech D338™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

NeoTech D238™ NeoTech D238™

The NeoTech D238™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

TrojanUVSigna™ — Wastewater Disinfection System TrojanUVSigna™ — Wastewater Disinfection System

Chlorine is not the only viable disinfection option for mid- and large-scale applications. With the TrojanUVSigna™, operators and engineers can confidently choose UV and benefit from its inherent safety features, cost-saving advantages and disinfection performance.

Floor Washer System Floor Washer System

The patent pending Floor Washer System is the Foambuster nozzle/deflector, but with the deflector rotated from below the nozzle to above the nozzle. The inverted splashplate spreads nozzle flow out across a floor in a fairly wide path to wash settled grit, sand or debris into a sump where it can be pumped out by a dewatering chopper pump. The Floor Washer System is particularly useful for attacking deposition problems in Combined Sewer Overflow (CSO) tanks, storm collection tanks, equalization tanks, lift stations, and influent channels.

TOC Reduction TOC Reduction

NeoTech Aqua Solutions provides the most efficient and cost-effective UV systems for destroying Total Organic Carbons (TOC’s) in water.  Whether your destroying NDMA, 1,4-dioxane, TCE, MTBE, urea, endocrine disruptors or other organics, only NeoTech Aqua provides ultraviolet TOC reduction with a treatment chamber optimized for low pressure mercury lamps.  As a result, NeoTech Aqua’s UV systems achieve a three times greater TOC reduction per kilowatt compared to standard UV systems, reducing our clients’ costs and energy consumption. In addition to efficiently generating ample 185 nm UV for TOC reduction, NeoTech Aqua’s TOC reduction systems also generate significant levels of 254 nm UV which serve as a powerful disinfectant, providing you both TOC-free and organism-free product water.

Capital Controls® Chlorination Capital Controls® Chlorination

De Nora Water Technologies is a leading provider of water and wastewater treatment technologies and contract operating services. Our company brings together numerous proven, established and market leading technologies and brands specifically designed for the treatment of municipal and industrial water and wastewater.

ClorTec® On-Site Sodium Hypochlorite Generation Systems T Series ClorTec® On-Site Sodium Hypochlorite Generation Systems T Series

ClorTec T systems easily control sodium hypochlorite production and provide a powerful disinfection method for any application. T systems meet requirements for 2 to 36 lb/day (0.9 to 16 kg/day) chlorine equivalent. Applications include potable water, wastewater, odor and corrosion control, cooling towers, oxidation and swimming pool disinfection.

The VLR® System for TrueSND™ Biological Treatment The VLR® System for TrueSND™ Biological Treatment

VLR® Systems from Evoqua utilize a vertical loop based design with looped reactors in series that allows DO stratification. As such, it is suited for simultaneous nitrification/denitrification; biological phosphorus removal and storm water treatment..

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WASTEWATER DISINFECTION PODCASTS

Ozonia M and FiltraFast Provide New Options For Treatment Facilities Ozonia M and FiltraFast Provide New Options For Treatment Facilities

If you don’t need the performance of an ultrafiltration membrane but also want to avoid the large footprint of a conventional media filter, you might want to consider FiltraFast extreme rate compressible media filters. As Ryan Hess, Director of Advanced Separation with SUEZ Water Technologies suggests in this Water Talk interview, “They provide roughly ten times the hydraulic loading rate of conventional media filters.”

Getting Chlorine Disinfection Right Getting Chlorine Disinfection Right

Of all the process considerations facing wastewater treatment operators, disinfection is one of the most important. In this exclusive Water Talk interview, Gary Lohse, Technical Sales Manager, Disinfection with De Nora Water Technologies, discusses how disinfection has become increasingly complex over time. Lohse reviews a host of selection criteria including target microorganisms, control strategies, disinfection by-products, capex and safety.

Drumming Up Chemical Injection Drumming Up Chemical Injection

The operating ranges for chemical injection need to be large because of the variability of flow in many treatment operations. As Bill McDowell, Vice President of Operations with Blue White Industries explains in this Water Talk interview, “You might be down to as low as 5 or 10 milliliters a minute and then one hour later; you might need to pump 15 gallons a minute out of the same pump and through the same sensor.”

Decentralization Grows With Worldwide Property Development Expansion Decentralization Grows With Worldwide Property Development Expansion

One of the trends in water and wastewater treatment over the past decade has been a growing demand for decentralized systems. Water Talk recently caught up with Nii Mensah, General Manager of Fluence USA, to learn more about the solutions that the new company (formed by the merger of RWL Water and Emefcy) is bringing to market to address communities’ treatment needs

Converting Wastewater Treatment Facilities Into Botanical Gardens Converting Wastewater Treatment Facilities Into Botanical Gardens

Municipal wastewater treatment has traditionally taken place as far away from the populace as possible. But as people flock to cities and encroach ever closer on these facilities, the practice of extending ever further out becomes impractical and expensive. And as water becomes scarcer, cities the world over are looking at recycling wastewater from their citizenry closer to home.

Peracetic Acid (PAA) Disinfection Is Up For The Challenge Peracetic Acid (PAA) Disinfection Is Up For The Challenge

The primary consideration for evaluating disinfection alternatives has to be permit compliance. But as Sarah Stewart, Associate and Senior Project Manager with CDM Smith explains in this Water Talk interview, contact time, high color, nitrates, industrial loads and many other factors all play a role in selecting the most practical and cost effect disinfection solution for your facility.

More Wastewater Disinfection Podcasts

WASTEWATER DISINFECTION VIDEOS

Brackish Water Desalination Plant Draws Rave Reviews Brackish Water Desalination Plant Draws Rave Reviews

Construction took just five months for this ecologically-friendly municipal desalination plant, designed to treat brackish water with high nitrate levels. Watch as the plant manager speaks about the advantages this system has provided.

UV Wastewater Disinfection Trending Up With Advancements, Installations UV Wastewater Disinfection Trending Up With Advancements, Installations

Jen Muller, VP of Marketing for Trojan Technologies, provides an update on two key TrojanUV technologies, the TrojanUVFlex and TrojanUVSigna. The former is designed for potable water reuse applications, including direct potable reuse (DPR), while the latter is ideal for wastewater disinfection as a replacement for chemical disinfectants. Muller shares the features and benefits of both products, and also discusses the TrojanUVSigna's installation at two of North America's largest wastewater treatment plants.

De Nora Launches Next Gen Capital Controls® Gas Feed Cabinet De Nora Launches Next Gen Capital Controls® Gas Feed Cabinet

The unique compact design incorporates the best existing Capital Controls® technology with exciting new features. With just three models ranging from 10-10,000 ppd capacity, each cabinet is available with automatic or manual feed and a 10" flowmeter for an easier read. Sonic operation on the 4100 model eliminates the need for a differential pressure regulator. On all automatic models, an additional controller isn’t needed, reducing components — and costs.

The ozonia Innovation Labs Have Set The New Standard For Ozone Technology The ozonia Innovation Labs Have Set The New Standard For Ozone Technology

The newest family in the SUEZ ozone range, the ozonia® M includes all the latest developments from the ozonia® innovation labs. Ozonia® IGS+ dielectric technology provides even lower energy consumption and increased ozone production capacity up to 25 kg/h resulting in a lower cost per kg of ozone. The new ozonia® smartO3™ automation platform adds a suite of advanced features designed to optimize system performance and reduce operation costs. Finally, an innovative design provides improved resistance to environmental conditions in a more compact footprint.

About Fluence Corporation About Fluence Corporation

RWL Water and Emefcy have merged to create Fluence Corporation, bringing together breakthrough, energy-saving technologies and proven delivery platforms that optimize treatment solutions for the complete water cycle. Fluence products address all segments of the water value chain, including desalination, reuse, wastewater treatment, freshwater treatment, and waste-to-energy — making it one of the world’s most comprehensive distributed water services firms. Visit us at WEFTEC booth #7135.

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WASTEWATER DISINFECTION NEWS

  • UV Disinfection System Recognized With Prestigious Aaees Grand Prize

    Carollo Engineers, CDM Smith, and Greater Cincinnati Water Works (GCWW) were recently awarded a grand prize by the American Academy of Environmental Engineers and Scientists (AAEES) for their work on a state-of-the-art ultraviolet (UV) system at GCWW’s Richard Miller Treatment Plant (RMTP).

  • Alkame Technology Begins Aquaculture Testing In Colorado

    Alkame Holdings, Inc. (OTCQB: ALKM), a publicly traded health and wellness technology holding company with a focus on patentable, innovative, and eco-friendly products announced today that High Country Shrimp LLC, the Company's wholly owned subsidiary, has secured a location and begun testing for the company's 'proof of concept,' utilizing the patented Alkame technology for use within the aquaculture industry.

  • UV Disinfection Equipment Market Expected To Reach $2.8B By 2020

    According to a new report by Allied Market Research titled "UV Disinfection Equipment Market - Size, Industry Analysis, Trends, Growth, and Forecast, 2013-2020", the global UV disinfection equipment market has a potential to reach $2.8B by 2020, registering a CAGR of 15.3% during 2014-2020.

ABOUT WASTEWATER DISINFECTION

 

Wastewater disinfection takes place after primary, secondary and sometimes tertiary wastewater treatment. It is typically a final step to remove organisms from the treated water before the effluent is released back into the water system. Disinfection prevents the spread of waterborne diseases by reducing microbes and bacterial numbers to a regulated level.

A variety of physical and chemical methods are used to disinfect wastewater prior to it being released into natural waterways. Historically, the chemical agent of choice for municipal wastewater treatment has been chlorine, due to its disinfecting properties and low cost. However, the rising cost of chlorine and concerns that low chlorine concentrations can still be toxic to fish and other wildlife, has given rise to more physical methods of wastewater disinfection being adopted such as ozonation or ultraviolet (UV) light.  

The use of ozone as a disinfection agent has the added benefit of increasing the dissolved oxygen content of the treated wastewater. However, because the ozone has to be generated, ozonation can require prohibitive up-front capital expenditure compared to traditional chlorination. UV disinfection has been growing in popularity as a wastewater disinfection method, in large part because of the life-cycle economics of the equipment and the fact that, like ozone, there is no toxic residual.