WASTEWATER DISINFECTION WHITE PAPERS & CASE STUDIES

Restoration Of 18-Year Old Emergency Chlorine Scrubber
Restoration Of 18-Year Old Emergency Chlorine Scrubber

Read the full case study to learn how the County of Maui Department of Water and IMS determined that spent caustic used at the local wastewater treatment plant and the acid wash solution generated during the cleaning process could be neutralized on-site and disposed through the local wastewater treatment system.

  • IMS Chlorine Vapor Scrubbers Installed In The Philippines
    IMS Chlorine Vapor Scrubbers Installed In The Philippines

    In 2014, bids were solicited to design, supply, install, and commission two Emergency Chlorine Scrubber Systems at the La Mesa Treatment Plants 1 and 2 in Quezon City, Philippines.

  • Restoration Of 18-Year Old Bulk Emergency Chlorine Vapor Scrubbers
    Restoration Of 18-Year Old Bulk Emergency Chlorine Vapor Scrubbers

    In October 2014, Eastern Municipal Water District (EMWD) selected IMS to clean, inspect, and restore four Bulk Emergency Chlorine Vapor Scrubber Systems.

  • Reconditioning Of Emergency Chlorine Scrubber
    Reconditioning Of Emergency Chlorine Scrubber

    The Integrity Municipal Services (IMS) team successfully cleaned and reconditioned an emergency chlorine vapor scrubber in Cheyenne, WY and did so while providing substantial savings to the City of Cheyenne, Board of Public Utilities (BOPU).

  • A Small Town With Big Challenges
    A Small Town With Big Challenges

    Aqua America water treatment plant in Tiffin, Ohio, was built in the 1920s and is situated on the Sandusky River. The plant processes 3.4 million gallons per day and was facing challenges of producing high-quality drinking water. A full measure of seasonal variety, combined with the runoff from a thriving agricultural environment, caused the small-town water facility to constantly encounter adverse conditions. In an effort to remain compliant, Aqua America enhanced coagulation, but this increased sedimentation rates and exacerbated sludge blanket depths.

  • Meeting Stringent Discharge Levels With AccuFAS
    Meeting Stringent Discharge Levels With AccuFAS

    When the Coldwater Board of Public Utilities in Coldwater, Michigan abruptly received new ammonia permit limits in August of 2007, they hired consultants to help guide them to the best solution for their new problem. With a full‐measure of influent waste variety consisting of residential, commercial, industrial and septage and a new seasonal permit limit of 2mg/L, Coldwater hoped for a budget friendly solution to consistently perform through peak flows and industrial shockloading.

  • Special Gas Chlorination System Replaces Tablet System At WWTP, Providing Enhanced Safety Needed For Gas Option, While Cutting Chemical Costs
    Special Gas Chlorination System Replaces Tablet System At WWTP, Providing Enhanced Safety Needed For Gas Option, While Cutting Chemical Costs

    The district manager for the Pinetop-Lakeside Sanitary District (AZ) reports that a special gas chlorination system, featuring unique components and controls, and manufacturer-supplied service, has effectively replaced a chlorine tablet system.

  • City Of Springfield, MO, Upgrades Disinfection System From Gas Chlorine To On‐Site Sodium Hypochlorite Generation
    City Of Springfield, MO, Upgrades Disinfection System From Gas Chlorine To On‐Site Sodium Hypochlorite Generation

    In April 2013, City Utilities started up three Microclor Model MC‐1500 skid systems, each rated at 1,500 pounds per day of free available chlorine.

  • Water Works Commission Lowers Risk Profile By Converting To A Safer Disinfectant
    Water Works Commission Lowers Risk Profile By Converting To A Safer Disinfectant

    Chatsworth Water Works Commission provides both water and wastewater services to the 5,000 residents of the cities of Chatsworth and Eton, GA.

  • Daelim RMP-2 Petron Bataan Refinery
    Daelim RMP-2 Petron Bataan Refinery

    Petron Bataan Refinery wanted to expand production to process 180 thousand barrels of crude oil per day while changing its feedstock from Arab Light to less costly heavy and sour crudes.

  • 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.

Time-Tested Technology: 25 Years of Trickling Filter Media Success
Time-Tested Technology: 25 Years of Trickling Filter Media Success

The Bissell Point Wastewater Treatment Plant is the largest wastewater treatment facility in Missouri with an average flow rate of 123 MGD. In the mid-1980s, the facility expanded to provide secondary treatment. The goal of the upgrade was to select a reliable process that would achieve high-rate BOD removal.

More White Papers & Case Studies

WASTEWATER DISINFECTION PRODUCTS

ClorTec® On-Site Sodium Hypochlorite Generation Systems — High Output CT Series ClorTec® On-Site Sodium Hypochlorite Generation Systems — High Output CT Series

ClorTec CT systems easily control sodium hypochlorite production and provide a powerful disinfection method for any application. CT systems meet requirements for 450–3,000 lb/day (204–1,360 kg/day) chlorine equivalent. Applications include potable water, wastewater, odor and corrosion control,cooling towers, oxidation and swimming pool disinfection.

MARINER OMNIPURE® Series M55 Marine Sewage System MARINER OMNIPURE® Series M55 Marine Sewage System

The MARINER OMNIPURE® Series M55 marine sewage treatment units offer a unique approach to wastewater treatment on smaller vessel, workboat and yacht applications. MARINER OMNIPURE Series M55 features a bulkhead mounting arrangement — a first of its kind — that provides safe and effective treatment of the wastewaters on board your vessel. The system results in discharge effluent quality well within the MEPC.159(55) requirements.

Model 420-T Ton Mounted Vacuum Regulator Model 420-T Ton Mounted Vacuum Regulator

The JCS Industries Model 420-T Ton Mounted Vacuum Regulator is designed for years of safe and reliable service.

ClorTec® On-Site Sodium Hypochlorite Generation Systems — Skid Mounted Midsize ClorTec® On-Site Sodium Hypochlorite Generation Systems — Skid Mounted Midsize

De Nora Water Technologies offers the ClorTec® On-site Hypochlorite Generating Systems, that easily produce 0.8% sodium hypochlorite by combining three common consumables: salt, water and electricity, to provide a powerful disinfection method for any application; food and beverage, potable water, wastewater, odor and corrosion control, cooling towers, oxidation and swimming pool disinfection.

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.

Wallace & Tiernan® Analyzers and Controllers Wallace & Tiernan® Analyzers and Controllers

Wallace & Tiernan MFC analyzer/controller offers a broad combination of drinking water analysis and disinfection/chemical control in a single unit.The MFC analyzer/controller offers an easy, software selectable range of control modes from flow proportional, residual control only, compound loop and set point trim enabling precise control of a chlorinator or metering pump to maintain the desired level of disinfection and water quality.

ClorTec® Aftermarket Solutions And Services ClorTec® Aftermarket Solutions And Services

De Nora Water Technologies can help you to optimise your electrochlorination system operation to deliver consistent life long performance.

Capital Controls® CHLOR-A-VAC® Series 1420 Chemical Industion Unit Capital Controls® CHLOR-A-VAC® Series 1420 Chemical Industion Unit

The Series 1420 CHLOR-A-VAC® affords high efficiency addition and mixing of gases and liquid chemicals resulting in substantial chemical cost savings.

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WASTEWATER DISINFECTION PODCASTS

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.”

The Benefits Of Closed-Channel UV Over Open-Channel Disinfection The Benefits Of Closed-Channel UV Over Open-Channel Disinfection

The era of dumping waste into rivers is almost over. So says Jon McClean, Chief Technical Officer with ETS-UV, an Evoqua brand. McClean who has been working in UV water treatment for over 30 years recently sat down with Water Online Radio to discuss the growth of water reuse and specifically UV’s role in water reclamation.

Making Aftermarket Service And Support Work For Water And Wastewater Treatment Plants Making Aftermarket Service And Support Work For Water And Wastewater Treatment Plants

As municipalities look to make their water and wastewater treatment equipment run longer with fewer operational staff on payroll to maintain the equipment, having a reliable aftermarket parts and service provider becomes essential.

UVT-LED Sheds Light On UV Disinfection UVT-LED Sheds Light On UV Disinfection

Learn why measuring UV transmittance is so important to efficient disinfection, and how LED helps get you there.

An Alternative To Chlorine Disinfection An Alternative To Chlorine Disinfection

Chlorine has been used to disinfect water and wastewater for more than a hundred years, and while chorine has been critical to ensure public safety, it does have some drawbacks. There is a risk of highly toxic emissions, and it also reacts with organic matter in water and wastewater and forms harmful disinfection byproducts.

The Importance of Drought: Good for Business? The Importance of Drought: Good for Business?

Normally, when people hear the word ‘drought’ it’s thought of with a negative connotation. In the water business, however, that’s not always the case.

More Wastewater Disinfection Podcasts

WASTEWATER DISINFECTION VIDEOS

The Groundwater Replenishment System In Orange County, California (Video) The Groundwater Replenishment System In Orange County, California (Video)

The Groundwater Replenishment System (GWRS) in Orange County, California is the largest indirect potable reuse project of its kind in the world. Our TrojanUVPhox™ plays an important role in the facility's treatment train.

The Application Of UV In Reuse (Video) The Application Of UV In Reuse (Video)

Water reuse is being adopted in the US as industry and communities recognize the need for a steady and sustainable water source for their future. In this Water Online video, Adam Festger, Market Manager for Trojan Technologies, discusses the Orange County groundwater replenishment system and other recent water reuse projects that Trojan UV has been involved in.

De Nora Invests In Core Water Treatment Technologies De Nora Invests In Core Water Treatment Technologies

Gary Lohse, Regional Sales Manager for De Nora Water Technologies, provides Bill King with a tour of the Company’s WEFTEC 16 booth and explains some of the product enhancements and initiatives that the new company has made since acquiring Severn Trent’s water treatment business last year.

SEPAREL® PF Series SEPAREL® PF Series

The SEPAREL PF series removes dissolved gases in water through a tube-shaped gas permeable membrane composed of polytetrafluoroethylene (PTFE). Gasses dissolved in water flow through the tube and are removed due to the pressure difference of the gases inside and outside of the tube, thus creating a vacuum outside of the tube. This video explains how the PF series works.

ClorTec On-Site Sodium Hypochlorite Generators ClorTec On-Site Sodium Hypochlorite Generators

On-site sodium hypochlorite generation is a proven, cost-effective, reliable and safe alternative disinfection treatment method. On-site generated sodium hypochlorite is stable and easy to feed, and less chlorine is lost to the atmosphere because of better mixing and retention in the treated water.

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WASTEWATER DISINFECTION NEWS

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.