WASTEWATER DISINFECTION WHITE PAPERS & CASE STUDIES

MABR-based Wastewater Treatment Plant Built From The Ground Up In The Caribbean
MABR-based Wastewater Treatment Plant Built From The Ground Up In The Caribbean

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.

  • 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.

  • Safe, Energy Efficient Disinfection For 45 MGD Combined Sewer WWTP Improves Water Quality
    Safe, Energy Efficient Disinfection For 45 MGD Combined Sewer WWTP Improves Water Quality

    The Hudson River, in the Capital District of Albany, NY, is a popular recreational area for boating, swimming and fishing. Unfortunately combined sewer overflows following storm events and snow melt from sewer systems dating back to the 1800’s were causing increased fecal coliform counts which in turn resulted in health alerts and limited access to the river. After considering several alternatives, the Albany County Sewer District selected a Wedeco Duron 60i2-2.5X4, with high power Ecoray 600W lamps, for their disinfection system.

  • ETS-UV™ Project Profile WWTP Dundee, Oregon
    ETS-UV™ Project Profile WWTP Dundee, Oregon

    The City of Dundee is a growing community with a strong economy boasting three wineries within the city limits and several others in the surrounding Willamette River Valley. The City’s existing WWTP was nearing capacity, and the limited discharge to the Williamette River would not adequately support Dundee’s planned growth.

  • The World’s Largest Drinking Water Plant Using Ozone Serves 1.6 Million Customers
    The World’s Largest Drinking Water Plant Using Ozone Serves 1.6 Million Customers

    Facing new limits on acceptable levels of DBPs in the drinking water, as well as age-old complaints about the taste of the water during the summer algal bloom, the North Texas Municipal Water District turned to ozone disinfection as a possible alternative able to address both concerns.

Indirect Potable Reuse With UV-Oxidation - Big Spring, Texas (Case Study)
Indirect Potable Reuse With UV-Oxidation - Big Spring, Texas (Case Study)

In an effort to reduce reliance on dwindling surface and groundwater supplies in Texas, the Colorado River Municipal Water District (CRMWD) constructed a new Raw Water Production Facility (RWPF) in Big Spring. Big Spring is a 27,000-member community located in West Texas approximately 300 miles west of Dallas. This RWPF treats secondary wastewater to a standard that allows it to be re-introduced directly into the raw water supply for the water treatment plants of Big Spring, Odessa, and other communities in the region.

More White Papers & Case Studies

WASTEWATER DISINFECTION PRODUCTS

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

ClorTec CT systems easily control sodium hypochlorite production and provide a powerful disinfection method for any application. CT systems meet requirements for 75–300 lb/day (34–136 kg/day) chlorine equivalent. Applications include potable water, wastewater, odor and corrosion control, cooling towers, oxidation and swimming pool disinfection.

Model 4180 All Vacuum Chemical Feeder Model 4180 All Vacuum Chemical Feeder

The JCS Industries Model 4180 All Vacuum Chemical Feeder is for operations that require high efficiency, accuracy, control and safety. The Model 4180 will feed chlorine dioxide solution used in municipal and industrial water treatment systems.

Wallace & Tiernan® Chlorine Gas Feed Systems Wallace & Tiernan® Chlorine Gas Feed Systems

About 100 years ago, Charles F. Wallace and Martin F. Tiernan installed the first chlorinator in New York, and since, chlorine gas has been the predominant chemical for the disinfection of water.

Model 4200 Gas Vacuum Chemical Feeder Model 4200 Gas Vacuum Chemical Feeder

The JCS Industries Model 4200 Gas Vacuum Chemcial Feeder mixes and feeds gaseous chemicals commonly used for water and wastewater disinfection accurately, reliably and safely.

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

ClorTec MCT systems easily control sodium hypochlorite production and provide a powerful disinfection method for any application. MCT systems meet requirements for 12–36 lb/day (5.4–16.3 kg/ day) chlorine equivalent. Applications include potable water, wastewater, odor and corrosion control, cooling towers, oxidation and swimming pool disinfection.

TrojanUVFlex — Water Reuse & Drinking Water Disinfection System TrojanUVFlex — Water Reuse & Drinking Water Disinfection System

TrojanUVFlex™ is ideally suited for water reuse (potable and non-potable) and drinking water treatment (including destruction of chemicals such as 1,4-dioxane and disinfection of up to 6-log adenovirus).

Emergency Chlorine Scrubbers Emergency Chlorine Scrubbers

IMS Wet Emergency Chlorine Scrubber Systems are designed to contain and treat accidental releases of chlorine gas. Systems are offered to treat up to 3 tons of chlorine gas. The IMS wet emergency chlorine scrubber is a three-stage single-pass chemical absorption system with very high efficiency horizontal packed bed sections. An induced draft fan pulls the chlorine gas through the scrubber, where it contacts a recirculation caustic solution. The scrubber system is factory pre-assembled, complete with induced draft fan, recirculation pump, instrumentation and controls.

The CoMag® System for Enhanced Clarification The CoMag® System for Enhanced Clarification

Proven to dramatically increase capacity performance and help to meet tightening regulations.

More Products

WASTEWATER DISINFECTION PODCASTS

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.

Different Wastewaters Require Different Decentralized Solutions Different Wastewaters Require Different Decentralized Solutions

When we think decentralization, we often think of smaller and smaller systems, supporting a single-family home or business. So it was interesting to sit down with Bob Rebori, President of Bio-Microbics recently and learn that the Company is being asked to build larger decentralized systems to support a variety of commercial applications.

Polymer Activation And Onsite Hypochlorite Generation Polymer Activation And Onsite Hypochlorite Generation

Polymer activation through proper hydration of the polymer particle is critical in water clarification or sludge dewatering applications. According to Jeff Rhodes, Vice President of Commercial Development for UGSI Solutions, “the key is to have a high energy zone at the moment of initial welding, when the polymer and the water come together.”

More Wastewater Disinfection Podcasts

WASTEWATER DISINFECTION VIDEOS

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.

Welcome To The Power Of Clarity Welcome To The Power Of Clarity

Hach's breakthrough suite of software and connected instruments turns data into powerful operational insights. Watch this short video to see how Hach simplifies the complexities and brings clarity to water management.

More Videos

WASTEWATER DISINFECTION NEWS

  • Calgon Carbon Corporation Announces Agreement To Be Acquired By Kuraray

    Calgon Carbon Corporation  and Kuraray Co., Ltd. announced recently that their respective Boards of Directors have unanimously approved, and the parties have entered into, a definitive merger agreement under which Kuraray will acquire Calgon Carbon for $21.50 per share in cash, which equates to an equity value of approximately $1.1B, and a transaction value in excess of $1.3B, including Calgon Carbon’s net indebtedness.

  • Introducing The New Bio-Microbics Mobile App

    Bio-Microbics is pleased to announce the availability of our new Mobile App for tablets and Smart Phones! We created the Bio-Microbics APP for a direct link to important pages on our Website in a fun and interactive screen.

  • DC Water Awards Kruger The Largest Wet Weather ACTIFLO Installation In The U.S.

    Kruger Inc., a Veolia business unit specialized in water treatment solutions for municipalities, will provide design services, process equipment and commissioning support to the Design Build Team of PC / CDM Smith as part of a contract from the District of Columbia (DC Water) to install its ACTIFLO® technology to process and treat wet weather flows.

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.